FileMode.CreateNew when file already exists

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- Previous
  - 1
    - When to use System.Transactions Hi, I have been reading through a lot of material online trying to figure out if my current scenario warrants the use of transactions. I have a ASP.NET 2.0 site that performs a task consisting of two LDAP operations, a filesystem operation and a database operation. If any of them fail they should roll back. Currently I'm just doing this with basic logic, however I'm wondering if I should try using the new system.transactions? I'm concerned though as only one of the above operation actual supports transactions. Thanks in advanced. Bill Tag: FileMode.CreateNew when file already exists Tag: 125744
  - 2
    - Editing a DataGridView bound to a DataView I have an application that displays data in a DataGridView. The data is in a DataView that is sorted and at times filtered. One of the columns I have in the dataview is a boolean field called "selected". Typically the DataView will either be sorted or filtered by this column. However when the user toggles the row value for this column (and others as well) in the DataGridView and ends the edit the data in the dataview changes, causing the filter or sort to reapply. This gets aggravating when the user goes to select what "was" the row below or above and suddenly it is a second row away. If a filter is applied the row they just modified may even be filtered out now and longer visible. It causes multiple data entry mistakes as well. I would like to be able to allow the user to modify the data in the grid while displaying their chosen dataview as there are several records to work with. What is the proper way to handle this type of problem? How can I make the DataGridView NOT AcceptChanges on the dataset (I think this may be the way to work around the issue) but still modify the row values? Thanks, Matt Tag: FileMode.CreateNew when file already exists Tag: 125742
  - 3
    - InstanceDescriptor problem rendering Nullable<double> constructor parameters I have a class like so: public class MyClass { public MyClass(double? x, double? y) { } } I have created a type converter for this class that converts MyClass to an InstanceDescriptor which renders a line of code like the following on a form when x and y are null: this.myComponent1.MyClassInstance = new MyClass(null, null); The designer deserialization mechanism in Visual Studio is able to correctly determine which constructor must be called on the MyClass class when entering design mode. However, if x and y are not null, and happen to have no decimal, the following line of code is rendered: this.myComponent1.MyClassInstance = new MyClass(2, 1); This causes an exception when the form is designed with an error about a constructor with Int32, Int32 signature not being found. It appears as though there is no implicit conversion (for some reason) from Int32 to Nullable<Double>. So far I have not been able to find a way to cause the InstanceDescriptor to render an explicit cast statement (double?) to ensure the constructor is called successfully. Has anyone experienced this problem before, and if so, how did you solve it? Thanks. -- Nathan Tag: FileMode.CreateNew when file already exists Tag: 125737
  - 4
    - ASP.NET Forum like VBulletin Hi Can someone recommend some ASP.NET forum software, similar to VBulletin, but based on ASP.NET Thanks Tag: FileMode.CreateNew when file already exists Tag: 125735
  - 5
    - Ecommerce software.. Hi Can anyone recommend some good ecommerce software for .NET?? Any info. on products you would recommend appreciated. Thanks Tag: FileMode.CreateNew when file already exists Tag: 125734
  - 6
    - Ecommerce software Hi Can anyone recommend some good ecommerce software for .NET?? Any info. on products you would recommend appreciated. Thanks Tag: FileMode.CreateNew when file already exists Tag: 125733
  - 7
    - MI5 Persecution: Communications with Security Service Tribunal in 1999 Communications with Security Service Tribunal in 1999 I took some more potshots at the SS-Tribunal in the first half of 1999. The correspondence between myself and the Tribunal Secretary is detailed on this webpage. Ultimately I decided not to pursue another complaint with them, partly from Robin Ramsay's advice (and that of a solicitor I consulted), but mostly because it was rather obvious from Mr Brooks' replies that the Tribunal has no investigative means of its own and is that useless animal, a toothless watchdog. Included with this first letter was a copy of the leaflet, "Complaints about the Security Service". This tells you that the Tribunal can order "the service to end its inquiries about you; the service to destroy any records it holds about those inquiries; the quashing of a property warrant; financial compensation". Yeah, right. Look, there's a flying pig, oink-flap, oink-flap. My subsequent letter to Nick Brooks, Tribunal Secretary, dated 25 March 1999, said; Dear Mr Brooks, We spoke on the phone last week and you kindly sent a copy of the form, "Complaints about the Security Service". I have a few questions which I should like to ask you, before I undertake the task of making a formal complaint. As you know I made a complaint in February 1997, and in June of that year the tribunal made a bland and unsatisfactory statement that "no determination in your favour has been made on your complaint". During our phone conversation I expressed the view that the Tribunal was incapable of performing its functions and acts as a whitewashing body for the Security Service. My questions are as follows; (1) Has the Security Service Tribunal ever during its existence found in favour of a compaint against MI5? (2) Is the Tribunal able to disclose whether "no determination in your favour" is made because MI5 claims to have no inquiries on a subject, or whether it is made because MI5 admits to actions against a subject but claims justification? If disclosure is not possible for individual cases, then in 1997 for how many cases (out of what total) did MI5 claim justification? (3) Is the Tribunal able to investigate information such as British Airways passenger lists, given that these could conclusively prove MI5 involvement? Would the Tribunal be forced to rely on MI5 to carry out such investigations, or would it have some other means of investigating? It might look slightly ridiculous for the Tribunal to rely on MI5 to investigate their own misdeeds. When I made my previous complaint to the Tribunal in 1997 I gave very little information as to the nature of my complaint. This time I intend to give as complete information as possible; but before I do so, I would ask you to answer the questions above, to outline the "ground rules" for a Tribunal investigation and reporting of its results. Yours sincerely, Mr Brooks replied by sending me a photocopy of two pages from the 1997 Report of the Security Service Commissioner, as follows. The photocopied pages from the 1997 Report follow. In particular, the answers the report gives to my questions are; the Security Service Tribunal has NEVER found in favour of a complainant; see sections 29 and 31 of the scanned report. Nick Brooks has confirmed orally over the phone that he has no memory of the Tribunal ever finding in favour of a complainant. Secondly, the question of whether the Tribunal is able to disclose "no determination in your favour" is because MI5 claims to have no inquiries on a subject, or whether it's because MI5 admits to having inquiries but claims they are justified. The answer to this one is in section 24, which says the ambiguity is intentional; and the Tribunal will in no circumstances give an unambiguous answer of whether MI5 claims or disclaims inquiries on a subject. In section 27 of the report, SS Commissioner Lord Justice Stuart-Smith says the blanket denials "might lead some to speculate that members of the service are carrying out operations involving unlawful interference with property, such as the installation of eavesdropping equipment, without first obtaining a warrant from the Home Secretary." He goes on to try to deny this speculation. But we've heard from Peter Wright that this went on all the time in the 1960s. So why wouldn't it still be happening now? Of course it is. The Tribunal Secretary had avoided answering the question from my previous letter, of whether the Tribunal had any independent investigative capacity. So I asked him again. Dear Mr Brooks, Thank you for your letter dated 6 April enclosing an extract of the 1997 Report of the Security Service Commissioner. This answers two of the three questions asked in my letter of 25 March. The third question remains. In 1993 I travelled on a British Airways flight on which there also travelled four men, one of whom stared at me, laughed and said, "if he tries to run away we'll find him". I took this to mean that these were the men who had been pursuing me for some time in the UK. This leads me to ask again the last question in my previous letter; (3) Is the Tribunal able to investigate information such as British Airways passenger lists, given that these could conclusively prove MI5 involvement? Would the Tribunal be forced to rely on MI5 to carry out such investigations, or would it have some other means of investigating? It might look slightly ridiculous for the Tribunal to rely on MI5 to investigate their own misdeeds. I would very much hope that some means is available to the Tribunal and Commissioner to investigate possible MI5 malefaction, other than relying on MI5 themselves. When I receive an answer to this question from you, I will work to put together a more comprehensive and detailed complaint for the Tribunal's consideration. Yours sincerely, Brooks' reply was; Brooks doesn't want to give a direct reply to the question, since that would place him in a bad light. So he gives an indirect answer; the tribunal, he avoids saying, has no investigative capacity; there is no mention even of any investigative capacity provided by MI5 themselves; nobody can investigate anything, all the Tribunal can do is ask MI5, and they, in their "Alice in Wonderland" world, can redefine the truth as it pleases them, and dissemble, and lie. Before deciding not to put another formal complaint before the Tribunal, I asked Robin Ramsay, editor of Lobster magazine, what he thought of the idea of making a complaint to the Tribunal. He replied; RESPONSE Yes it is a waste of time. They will do nothing. In a further email he elaborated; As for quoting me on the Security Service Tribunal - if you think my comments would mean anything, feel free. The problem people have is this: they almost have to go through the motions of going to the Tribunal for if they don't they will always be asked, 'Why didn't you go the proper authorities?' (This is one of the chief functions of 'the proper authorities'.) Robin Ramsay So the sum of the various parts of this story is; DON'T GO TO THE TRIBUNAL. If you do, then MI5 will open a file on you (if you don't have one already). Don't do as I did, do as I say. If you feel a really deep-seated urge to complain, do so first under an invented name, which will make you understand just how useless the Tribunal is, how little information they provide, and how unpleasant it is to know that you have given MI5 a reason to officially open a file on you in their Registry. 716 Tag: FileMode.CreateNew when file already exists Tag: 125730
  - 8
    - System.OutOfMemoryException with .NET 2.0 but NOT .NET 1.1 Hello, We use a third party reporting system (Actuate) which provides soap services via WSDL. My web application was initially built in Visual Studio 2003 using .NET 1.1. I was able to download huge files, i.e., over 100MB with no problems. Actuate also has a utility (c# win app) that has no issues with a .net 1.1 version. Our dev house has upgraded to VS2005 and we have recompiled everything which is now under .NET 2.0. Now my web app may be able to download a file over 100MB once and then report a System.OutOfMemoryException. This also occurs in my DLLs and the Actuate utility that were all compiled with VS2005. Is there a bug in the .NET Framework 2.0 somewhere in the memory allocation or stream allocation process? The exception thread below shows at what point the process is dying. Is there anyone that has any ideas around this? Thanks in advance. Again, none of the code has been changed, we just recompiled in vs2005 and now are under .net 2.0 rather than 1.1. That's the only change. ***************************************************** at System.String.GetStringForStringBuilder(String value, Int32 startIndex, Int32 length, Int32 capacity) at System.Text.StringBuilder.set_Capacity(Int32 value) at System.Xml.BufferBuilder.ToString() at System.Xml.XmlTextReaderImpl.ParseText() at System.Xml.XmlTextReaderImpl.ParseElementContent() at System.Xml.XmlTextReaderImpl.Read() at System.Xml.XmlTextReader.Read() at System.Xml.XmlTextReaderImpl.InitReadElementContentAsBinary() at System.Xml.XmlTextReaderImpl.ReadElementContentAsBase64(Byte[] buffer, Int32 index, Int32 count) at System.Xml.XmlTextReader.ReadElementContentAsBase64(Byte[] buffer, Int32 index, Int32 count) at System.Xml.Serialization.XmlSerializationReader.ReadByteArray(Boolean isBase64) at System.Xml.Serialization.XmlSerializationReader.ToByteArrayBase64(Boolean isNull) at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationReaderActuateAPI.Read14_Attachment(Boolean isNullable, Boolean checkType) at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationReaderActuateAPI.Read167_DownloadFileResponse(Boolean isNullable, Boolean checkType) at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationReaderActuateAPI.Read517_downloadFileResponse() at Microsoft.Xml.Serialization.GeneratedAssembly.ArrayOfObjectSerializer165.Deserialize(XmlSerializationReader reader) at System.Xml.Serialization.XmlSerializer.Deserialize(XmlReader xmlReader, String encodingStyle, XmlDeserializationEvents events) at System.Xml.Serialization.XmlSerializer.Deserialize(XmlReader xmlReader, String encodingStyle) at System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage message, WebResponse response, Stream responseStream, Boolean asyncCall) at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters) at ActuateAPI.downloadFile(DownloadFile DownloadFile1) at CAcApi.DownloadFile(String sFileName) Tag: FileMode.CreateNew when file already exists Tag: 125729
  - 9
    - Security: ¿how to store an encryption key locally? Hi, i need to know the best practice about a security issue... For a WinForms C/S application it is required to store an encryption key locally. ¿How can store that key to be accesible only by the application but no by unauthorized users? Options: - A file: The key should be encripted, but again we have a key to store. - Hard coded in the application: The problem here is possible decompilation (even with obfuscation you can reach the key) - ¿Using an OS service or another external entity? Thanks, Néstor. Tag: FileMode.CreateNew when file already exists Tag: 125726
  - 10
    - event ID 0 what can I do about this: Event Type: Error Event Source: .NET Runtime Event Category: None Event ID: 0 Date: 2006-12-29 Time: 23:30:58 User: N/A Computer: IEI-A64 Description: The description for Event ID ( 0 ) in Source ( .NET Runtime ) cannot be found. The local computer may not have the necessary registry information or message DLL files to display messages from a remote computer. You may be able to use the /AUXSOURCE= flag to retrieve this description; see Help and Support for details. The following information is part of the event: Unable to open shim database version registry key - v2.0.50727.00000. Tag: FileMode.CreateNew when file already exists Tag: 125722
  - 11
    - Microsoft Internet Explorer Displays a Blank Page While It Uses HTTP 1.1 on IIS6 Hi everybody Well here is my problem Three weeks ago I have installed my ASP.NET 1.1 application on a Clustered web server. In order to reduce the size of my pages (cause of remote points of the company) I have enabled HTTP 1.1 Compression on my IIS 6.0 Since then I have started to have some bizarre behaviours in Internet Explorer. I have noticed that after some post backs the internet explored display a blank page. But the curious is that when I'm viewing the source of the web page the HTML code is all there. If I copy it and paste it on an HTML file I can view it on Explorer without any problem. The other strange thing is that then I'm viewing the page from the local LAN 100Mbits I don't have any problem. But when I'm viewing from an other point that it is connected with a leased line 512kbps I'm starting to have the problem and not all the time. I have checked the rooters for black hole and they came up clean. Have anyone any idea why this may happen?? Also keep in mind the problem occurs in windows XP with and without the latest service pack, and also in Windows 2003 R2 with all the hot fixes installed. And sorry for cross posting but I don't know where to look Is it IIS6 bug or IE bug??? Thank you for your time And please HELP!!!!!! Dim Tag: FileMode.CreateNew when file already exists Tag: 125715
  - 12
    - business class framework??? I recall seeing somewhere a book where the author creates a .net business object framework and allows any developer that buys his book to use the framework. It is my understanding that it is a pretty popular framework with either three or four acronime name. Does anyone know the book I am refering to? An ISBN number would be GREAT! Tag: FileMode.CreateNew when file already exists Tag: 125714
  - 13
    - MI5 Persecution: Eye Say, and Lord Gnome Answers Eye Say, and Lord Gnome Answers My interactions with Private Eye started in May 1995, shortly after I'd started bleating on usenet. I tried to get the Eye interested in my case, as I thought they more than anyone have their finger on the pulse, and would surely already know something about my case. In my first email to them, entitled "pas de bouteille?" (wot no bottle?), I asked if they had the nerve to publish what was known to many thousands of people. Their email flunky answered; Date: Thu, 11 May 95 13:40 BST-1 From: strobes@cix.compulink.co.uk (Private Eye) Subject: Re: pas de bouteille? In-Reply-To: <199505102232.SAA19988@freenet.carleton.ca> Bottle? Dunno really - but I've passed your mail on to the Ed for his consideration. Steve Mann (strobes) ========================================================== Date: Mon, 15 May 95 12:51 BST-1 From: strobes@cix.compulink.co.uk (Private Eye) Subject: Re: hello again In-Reply-To: <199505122236.SAA02574@freenet.carleton.ca> Hello yourself... Thanks for the email. Unfortunately, I can't say whether or not the Eye will do anything with this... I'm only the messenger. As the only computer-literate peron in the Gnome organisation, I get to read all the email and then pass it on to the Editor. Sorry -- not very helpful, I know. Steve Mann (strobes) The following year I gave PE another little prod, which yielded the following; Date: Tue, 13 Feb 96 11:38 GMT From: strobes@cix.compulink.co.uk (Private Eye Magazine) Subject: Re: Previous communication In-Reply-To: <199602102320.SAA26182@[snip]> Sorry not to reply sooner... we've been swamped with email and I have very little time to answer it. However, the editor sees all the email received here and I'm afraid he hasn't expressed an interest in your story so I can only assume that he feels it isn't for us. Sorry. strobes Given that I couldn't provide the evidence to persuade the Eye of the credibility of my claims, I did the next best thing, which was to take out classified adverts in their "Eye Say" and "Eye Tech" columns. My motivation for doing so is obvious; the Eye is read both by many thousands of ordinary folk, but also makes its way into the homes and consciousness of the UK's political and media elite. It is also a known favourite with "Five". What better way of taking the fight to the enemy? The first small ad appeared on 10 Jan 1997 in issue 915 in "Eye Say". It ran in that column on 24/1/97 and 7/2/97. On 21/2/97 it ran in "Eye Tech", and on 7/3/97 and 21/3/97 again in "Eye Say". I then changed the ad's wording to read "BBC Newsreaders Conspiracy", and the new wording ran in "Eye Say" from 4/4/97 issue 921, 18/4/97 to 2/5/97. The word "xenophobic" in the first advert had been intended to convey the sense of exclusion through the bigotry of my enemies, both on the basis of race and mental condition, but it seemed a bit too non-specific. "BBC Newscasters Conspiracy" was a little more immediate, although readers had to actually wade through the website to find out what it was that the newscasters were conspiring to do. My next effort tried to spice up the text. "MI5/BBC Conspiracy" ran for six issues in "Eye Say", from 5/9/97 issue 931 until 31/10/97. I suppose there is something a little sad about somebody who knows he has mental illness, placing adverts about a conspiracy in which MI5's watchers enable BBC newscasters to personally and directly communicate with him while reading the news. It is pretty sad, but unfortunately it is also true, both in the objective reality we all inhabit, as well as in my own mind. There followed a hiatus of about a year until I resumed advertising on 2 October 1998. I paid over £200 for six months advertising of the new improved text "MI5 Persecution, BBC Newscasters Spying on my Home". This text ran from issue 960 until issue 972 (19 March 1999) in "Eye Say". Private Eye's editor Ian Hislop denies knowing anything about my case, as the following email illustrates. Date: Tue, 3 Nov 1998 14:10 +0000 (GMT Standard Time) From: strobes@private-eye.co.uk (Private Eye) Subject: Re: PLEASE ANSWER - THANK YOU CC: strobes@private-eye.co.uk Reply-To: strobes@private-eye.co.uk Sorry to take so long to answer. As soon as the editor returned from holiday Steve went away. Steve is still away and so I am answering your letter. I have asked the editor and he knows nothing about any conspiracy between M15 and the BBC. Hope this helps. Mary Aylmer Private Eye I must say I'm quite surprised he knows nothing; the "Eye" is usually well clued up on what's going on. 1892 Tag: FileMode.CreateNew when file already exists Tag: 125712
  - 14
    - when will .net application free the committed memory (or VM) It's known, that .net app alloctes a block of memory and managed itselsf (or by GC), and when gc do collect, it may not free the committed memory immediately. Who'd like tell me when will it REALLY free the memory. Any reply is highly appreciated! Tag: FileMode.CreateNew when file already exists Tag: 125708
  - 15
    - Just Help Me Hello All . . . Please answer the questionary in the following URI http://nees.awardspace.com/ Thanks a lot . . . :D Tag: FileMode.CreateNew when file already exists Tag: 125707
  - 16
    - MI5 Persecution: Counter-surveillance sweep by Nationwide Investigations Group Counter-surveillance sweep by Nationwide Investigations Group In July 1994 the private detective agency Nationwide Investigations Group conducted an electronic counter-surveillance sweep of my parents' home in London. They checked for radio transmitter devices, and tested the telephone line for attached bugs. They found nothing. I am afraid that I was unsurprised at their not finding any evidence of covert surveillance. It had been made very clear to me, particularly during 1990-92, that audio, and almost certainly video, surveillance of my parents' home was taking place. But this would not have been made quite so obvious unless the persecutors were confident of their apparatus being undetectable using the technology the police, or a private agency like Nationwide, would be using. I don't know very much about the surveillance technology that has been used against me, but I understand that devices can be built which switch off on receiving a coded command, and may switch on again after a counter- surveillance sweep has completed; that devices may rapidly alter the frequency of transmission, "frequency-hopping" devices which presumably cannot be detected in a sequential scan of the sort employed by Nationwide; and of course "probe" microphones can be inserted "through-the-wall", although I hesitate to believe our neighbours would permit this. We paid Nationwide £411.25 (including VAT) for the surveillance sweep, which took them about an hour and a half to complete, using a "Professional 5000 multi-scanner, CCL UHF scanner and Guideline telephone tap detector." As I said above, I don't know very much about these things, so I can't comment on the capabilities or otherwise of this equipment. But clearly the "watchers" are using technology which in 1994 was beyond the detection capabilities of a good private detective agency. 716 Tag: FileMode.CreateNew when file already exists Tag: 125703
  - 17
    - Save Image from PictureBox :: Drawing VS.net 2003 Hi, I got problem, kindly please help. Thank you error message: An unhandled exception of type 'System.NullReferenceException' occurred in Test.exe Additional information: Object reference not set to an instance of an object. with following code --------------------------------------------------------------------------------- Public Class Form2 Inherits System.Windows.Forms.Form #Region " Windows Form Designer generated code " Public Sub New() MyBase.New() 'This call is required by the Windows Form Designer. InitializeComponent() 'Add any initialization after the InitializeComponent() call End Sub 'Form overrides dispose to clean up the component list. Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean) If disposing Then If Not (components Is Nothing) Then components.Dispose() End If End If MyBase.Dispose(disposing) End Sub 'Required by the Windows Form Designer Private components As System.ComponentModel.IContainer 'NOTE: The following procedure is required by the Windows Form Designer 'It can be modified using the Windows Form Designer. 'Do not modify it using the code editor. Friend WithEvents PictureBox1 As System.Windows.Forms.PictureBox Friend WithEvents Button1 As System.Windows.Forms.Button <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent() Me.PictureBox1 = New System.Windows.Forms.PictureBox Me.Button1 = New System.Windows.Forms.Button Me.SuspendLayout() ' 'PictureBox1 ' Me.PictureBox1.BackColor = System.Drawing.SystemColors.Window Me.PictureBox1.Location = New System.Drawing.Point(40, 48) Me.PictureBox1.Name = "PictureBox1" Me.PictureBox1.Size = New System.Drawing.Size(256, 192) Me.PictureBox1.TabIndex = 0 Me.PictureBox1.TabStop = False ' 'Button1 ' Me.Button1.Location = New System.Drawing.Point(32, 264) Me.Button1.Name = "Button1" Me.Button1.TabIndex = 1 Me.Button1.Text = "Button1" ' 'Form2 ' Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13) Me.ClientSize = New System.Drawing.Size(416, 357) Me.Controls.Add(Me.Button1) Me.Controls.Add(Me.PictureBox1) Me.Name = "Form2" Me.Text = "Form2" Me.ResumeLayout(False) End Sub #End Region Private Sub PictureBox1_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles PictureBox1.Paint Dim g As Graphics = e.Graphics g.DrawLine(New Drawing.Pen(Color.Red), 1, 1, 200, 200) End Sub Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click PictureBox1.Image.Save("c:\test.gif") End Sub End Clas --------------------------------------------------------------------------------- Tag: FileMode.CreateNew when file already exists Tag: 125701
  - 18
    - Questions about LINQ and other future features Peace be with you all, Now that the WPF, WCF & WWF are .NET 3.0 (which is really just .NET 2.0 + a ton of new assemblies), what will be the version name for the features that include LINQ and other features such as anonymous types? Will that version upgrade require a CLR version change, or will it still use the same CLR 2.0? (Please correct me if my terminology is off.) I know that C# will change (of course), but what I'm most curious about is will the Reflection API (Type, MemberInfo et al) change with it, or will that remain the same? And, finally, is there a definitive list of features within that version step and/or a tentative/projected release date? Thanks in advance, Robert McCall Tag: FileMode.CreateNew when file already exists Tag: 125700
  - 19
    - Passing objects with pinvoke Hi there, I need some help with p invoke. I have some win 32 dlls that I need to call a functions in. This functions require objects. eg: FUNCTION MailMerge(oDr AS Doctor, lAddToPatient := TRUE AS LOGIC) AS LOGIC PASCAL Now I want to call this from my .net code. How do I go about creating this Doctor object. Do I need to define a doctor object in .net? Can I create the doctor object some other way? Thank you for your help. Tag: FileMode.CreateNew when file already exists Tag: 125699
  - 20
    - How do I create a form in an outlook appointment? I work as an administration officer and one of my jobs is diary management for about 6 counsellors & 4 case workers. I manage thier appointments and gather statistics from the information in them. Is there some way that i can create an appoinment template for them with something like a form in the body of it that automatically shows. I would like them to be able to fill this form out for each appointment. This way they would not have to think about what to put into each appointment as they make it. It would make information gathering much easier and I could get exactly the information I need without chasing anyone up. Tag: FileMode.CreateNew when file already exists Tag: 125698
  - 21
    - Client not returning server cookie Hi friends, During my server's communication with client, I add a cookie to the HTTP response. I also set the "Expires" property of cookie using cookie.Expires = DateTime.Now.AddDays(1); This used to work earlier but today I have seen that my client has stopped sending the cookie back to me in the same (TCP and HTTP) session. I saw that in the HTTP response from my server, the Max-Age info about the cookie was missing. Does that mean that the way I set the Expires property of cookie did not work ? I can't seem to figure whats the problem. Can anybody point out what could the possible problem be ? How can I ensure that I get the cookie back from client ? Thanks n Regards, Kunal Tag: FileMode.CreateNew when file already exists Tag: 125695
  - 22
    - new group - MICROSOFT.PUBLIC.DOTNET.CRYSTALREPORTS hello, um, mr microsoft? could you, like, open a new forum in your usenet namespace? we .NET developers who use Crystal Reports really need a central location for swapping tips & making trouble-shooting inquiries. i know there is an official Business Objects website w/ a .NET forum (near dead), as well as 3rd-party newsgroups (cant access from our office), but nothing that is as universal as this namespace -- and as well populated. so how about it? please? w/ sugar & a cherry on top? matt Tag: FileMode.CreateNew when file already exists Tag: 125690
  - 23
    - Interfaces and Abstract Classes Hi all, I have an interface interface ICar { void accelerate(double amt); void brake(double amt); double getSpeed(); } and I create an abstract class public abstract class GenericCar : ICar { protected double _speed; public abstract void accelerate(double amt); sealed override public void brake( double amt ) { if( ( _speed - amt ) < 0.0 ) { _speed = 0.0; return; } _speed -= amt; } sealed override public getSpeed() { return _speed; } } Class TestCar : GenericCar { //I want to have implementation for accelerate only //and want to control brake and getSpeed from abstract class } I read on MSDN that If I have sealed override then I can access the abstract classes methods but it gives me an error "No Suitable method to override" Please advice, Stephen Tag: FileMode.CreateNew when file already exists Tag: 125688
  - 24
    - File Version Is there a better way in .NET to get my applications File Version information than calling GetFileVersionInfo(). I am using VS2005, C++. Thanks Tag: FileMode.CreateNew when file already exists Tag: 125678
  - 25
    - Execute command Hi, can anyone tell me how can I execute an external command such as dos command through my windows application which is built in C#. VB has the "Shell(...)" function but I couldn't find something like this in C#. Thanks George Tag: FileMode.CreateNew when file already exists Tag: 125676
- Next
  - 1
    - Interoperability questions! I am going to develop a software in the domain of image recognition. I have planned to use the .Net Framework 3.0 to to so. Especially the Development Environment together with new technologies like XAML and WPF supported the idea of using .Net 3.0 . The bad news is, that I will have to use umnanaged c++ librarys like the "Intel Open Vision Library". I had a glance over the Interoperability classes and possibilites at msdn - it sounds to me that it is a science on his own to make umanaged code/dll's accessible for .Net with PInvoke. It seems to be very time consuming. Maybe someone of you is able to help me deciding weather to use .Net or not for a software as mentioned above. Greeting A.Gallus Tag: FileMode.CreateNew when file already exists Tag: 125674
  - 2
    - Referencing controls inside FormView Hi This question is related to ASP WebApplication , I have a FormView on the Page and the FormView has Templates like InsertItemTemplate, EditItemTemplate etc. on the InsertItemTemplate i have a control named FormView1.InsertItemTemplate.InsertTemplate.TextBoxLastName what is the method of referencing the controls "TextBoxLastName" in code TIA Barry Tag: FileMode.CreateNew when file already exists Tag: 125673
  - 3
    - Q : WebClient.DownloadData not working for HTTPS page through a PROXY I'm trying to upload some data via the request headers to a page on a secured site, the page is accessed through the office proxy. Through IE and the appropraite proxy settings I can browse to the page just fine. When I use a webclient to call downloaddata on the page I get the webexception "The underlying connection was closed: Unable to connect to the remote server." which has an inner IOexception of "The operation is not allowed on non-connected sockets." from what I could trace out of the headers I can see that IE sets this when requesting the page Proxy-Connection: Keep-Alive But when I call it through the webclient class this is set instead Connection: Keep-Alive I can't set the Proxy-Connection header properly since it's a protected header, and I can't figure out how to get the WebClient to set this particular header. Does anyone have any idea wats going on here? Tag: FileMode.CreateNew when file already exists Tag: 125668
  - 4
    - .Net control memory not freed in mshtml I have a large .net control that I am running in MSHTML. The control simply loads up a number of images, however this problem has been replicated with a number of other .net controls. When the control is unloaded by calling up another page none of the memory is freed. Using perfmon I have a flat line for both virtual and private bytes that is never freed until the application is shut down. For my own controls I can workaround this problem by calling GC.Collect() in the dispose method, however my problem is with third party controls that do not do this. It is almost like the GC stops working when the page is closed. Has anyone else seen this problem. Is it something I am not doing in my code or is it normal mshtml behavior. If so is there a workaround to clear the memory or has the 3rd party application got a memory leak bug? Thanks for your help in advance. Tag: FileMode.CreateNew when file already exists Tag: 125667
  - 5
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  - 6
    - Custom configuration section: How to get null for non required properties? In the following sample I declared a custom configuration section within my app.config. As you can see, the lastName attribute of the second employee element is missing: <?xml version="1.0" encoding="utf-8" ?> <configuration> <configSections> <section name="Employees" type="CustomConfigurationTest.MyConfigSection, CustomConfigurationTest" /> </configSections> <Employees> <Employee EmployeeID="1" FirstName="John" LastName="Doe" /> <Employee EmployeeID="2" FirstName="Jane" /> </Employees> </configuration> The corresponding ConfigurationElement derived class looks as follows: public class EmployeeElement : ConfigurationElement { [ConfigurationProperty("EmployeeID", IsKey = true, IsRequired = true)] public int EmployeeID { get { return (int)this["EmployeeID"]; } set { this["EmployeeID"] = value; } } [ConfigurationProperty("FirstName", IsRequired = true)] public string FirstName { get { return (string)this["FirstName"]; } set { this["FirstName"] = value; } } [ConfigurationProperty("LastName", IsRequired = false)] public string LastName { get { return (string)this["LastName"]; } set { this["LastName"] = value; } } } Please note that the LastName property is marked as "IsRequired=false". At runtime the LastName property contains an empty string for the second employee because the lastName attribute isn't specified in the app.config. But I'd rather like to get a null value instead. Does the .NET configuration mechanism somehow allow to get a null value for non required configuration element properties when the corresponding attribute isn't defined? Or is this just not possible? Any hints are appreciated. Best regards Tag: FileMode.CreateNew when file already exists Tag: 125658
  - 7
    - comparing two generic Lists hi, In the simplest form, i have two generic lists and i want to compare if the elements in each of them exactly match. list<double> list1 = new list<double>(); list1.AddRange(new double[]{1,2}); list<double> list2 = new list<double>(); list2.AddRange(new double[]{1,2}); list1 == list2 returns false Can someone point me to the right direction. TIA Irfan Tag: FileMode.CreateNew when file already exists Tag: 125652
  - 8
    - video components Hi We are looking to a .net or activex component to =B7 save video from any input device (with the most common encoding formats) =B7 to be able to read from the file being saved =B7 display any part of the video that is being saved =B7 and produce small new video files based on the file that is being saved.=20 Any advice? manuel Tag: FileMode.CreateNew when file already exists Tag: 125651
  - 9
    - Session State problems for multiple users Hi, Hopefully somebody can help me... (Using Visual Studio 2005, SQL Server 2005, C# and ASP.NET) The development team I work in has created a large application that has started displaying some nasty bugs which we think are being caused by the session state. When a single user logs in, their location ID is assigned to the session state. This location ID persists until the browser session is closed and no bugs appear. However, when another user logs in, using a different location ID, the original user's session state changes to show the new user's location ID! Sometimes, the location ID held within the session state 'swaps' between users e.g. I log on as location 124 and a colleague logs on as location 230 - suddenly, my location is 230 and my colleague's is 124! We have checked to ensure that the session ID persists, it's just the values of the session state that are changed. Any help will be gratefully received :) Thanks, Rob Tag: FileMode.CreateNew when file already exists Tag: 125650
  - 10
    - Remoting Service Crash on Win2k but not on WinXP??? I wrote an Service with remoting on it. I sinatll this on a WinXP and that work fine. But if i install this on an Win2k Maschine i got this error @the Eventlog: EventType clr20r3, P1 segoni_service.exe, P2 1.0.0.0, P3 458ca4d9, P4 mscorlib, P5 2.0.0.0, P6 4333ab80, P7 441a, P8 17, P9 xa4dod5ht1oc5ljzu2d2hnds3lidcje4, P10 NIL. "segoni_service.exe" is the name of my Service. Please Help ME!!!!!! Howard Tag: FileMode.CreateNew when file already exists Tag: 125646
  - 11
    - CSS object? Hi all C# web apps in VS 2003 .net1.1 Is there such thing as a StyleSheet object that I could instantiate and then load up a CSS and then refer to the various rules, classes of the css? I want to use a regular css file but be able to load it up and then apply the rules and classes to individual objects on the page as desired. Happy New year to all ! Jeff Tag: FileMode.CreateNew when file already exists Tag: 125636
  - 12
    - CD Burning After several years of making music cds (.wav), all my cds come out very distorted. I have been trouble shooting for a month with no luck. I am running windows xp. I use 4 burning programs, with the same result on all. If I play music from saved files it sounds great. Just have extreme distortion on burned cds. I replaced my DVD/CD burner and still had no luck. Can anyone help me?????? Tag: FileMode.CreateNew when file already exists Tag: 125631
  - 13
    - Sharing data between processes Hi, I am designing an application in which several processes need to share *secure* data. Some of these applications will be written in .Net (managed) code and some in C++ (unmanaged). To centrally store this data, I considered a few solutions: 1. COM Server (Out of process) - store all the centralized data in this object. 2. Enterprise Services (COM+) 3. System Service with .Net Remoting 4. Shared memory (needs .Net wrapper) There is also a security consideration - I don't want any other process (besides those that I define) to be able to access this data. Any suggestions on the best approach to implement this would be greatly appreciated :) Danny Tag: FileMode.CreateNew when file already exists Tag: 125623
  - 14
    - Error with .Net Runtime 2.0 on Windows Service I need some serious help. I am getting the following errors in my event log: Source: .NET Runtime 2.0 Error Event ID: 5000 EventType clr20r3, P1 orionnetreg.exe, P2 1.3.2548.24224, P3 458d8320, P4 system, P5 2.0.0.0, P6 4333ae87, P7 374c, P8 124, P9 system.objectdisposedexception, P10 NIL. Source: .NET Runtime 2.0 Error Event ID: 5000 EventType clr20r3, P1 orionnetreg.exe, P2 1.3.2548.27502, P3 458d9cbd, P4 system.data, P5 2.0.0.0, P6 4333aea2, P7 1946, P8 25, P9 system.invalidoperationexception, P10 NIL. The first one I might have fixed because it has gone away but the other error keeps happening. I took a window service created in VB .Net 2003 that had worked like a charm. What the service did was expose a Remoting DLL that a windows application called and it had a timer that would trigger every so often and then the service would make some calls to some web services created with WSE 2.0. I updated the code to .Net 2005, then updated the web services calls to WSE 3.0 and had no errors or anything. I reinstalled the service and started it up with no problem. Then after the windows application connected to the Remoting calls the service would DIE with the error at the top. After a lot of work and testing I realize that the problem was some COM DLLs that had not registered correctly so after Unregistring them and re-registering them that error went away. Then I deployed my service out to my customers computer after 10 days of letting it run and testing on my server. My server is Windows 2003 Small Business Standard server with all of its UPDATE. I installed it on 9 customers servers. All different servers, some Windows 2000, some XP Pro, and some Windows 2003 Small business standard. 7 repeatly have the second error listed above, the only two that do not have the issue, one is a Windows 2003 server and the other is a 2000 server. I have tried putting logging into the code, it logs fine but then dies for no reason. I can not find when it dies, and the message above is CRAP!!!! (For give my frustration) We have tried everything, my server and two other work with no problem. But I don't know why these messages are only showing up on some servers and I can not get any reliable message to tell me what is going on. I see that it has something with System.Data, and that it is some System.Invalid Operation Exception but I can not get any more dumpped out. Anyone out there who can help me with this. We are dead in the water if we can not fix this. It seems to be something with .Net 2.0 but WHAT???????????? ALL HELP appriecated. Clyde Tag: FileMode.CreateNew when file already exists Tag: 125621
  - 15
    - Find a process using a specific COM port handle Hi, I was wondering if somebody here knows how to find a process using a specific serial port handle. My application uses serial communication and there is another application that holds the handle that I am trying to aquire ... I need to find this application, and terminate it or at least force it somehow to release the file handle. Jeez, that is a lot of Win32 API terminology - and I am not strong enough with that - I looked up the EnumProcesses() from psapi.dll but can't get it to work. Would appreciate very much. --kermit_xc Tag: FileMode.CreateNew when file already exists Tag: 125617
  - 16
    - Hackers break into online broker accounts in USA High-tech crooks using spyware are costing U.S. discount brokerages millions of dollars to repay clients who have been victimized by fraud http://www.network-analyzer.blogspot.com Tag: FileMode.CreateNew when file already exists Tag: 125615
  - 17
    - RegEx to NOT find matches In my project, I get the HTML code of a website, and I need to check for three texts: "Mail was send to...", "No data matching your search input" and "Request timed out" Problem is, one of the matches fits always and comes back very fast, the two others take forever to execute (and confirm this text is NOT in the page given back). With "fast" I mean "not measureable quick" and by "slow" I mean around 3 minutes! The webpage (=the text searched in) is between 60 and 150 kb long, the patters are searched with Dim m4 As Match = Regex.Match(ResponsePage, ".*Script\stimed\sout.*", RegexOptions.Singleline Or RegexOptions.IgnoreCase) Is that the normal behaviour of a RegEx to need so long to confirm something is NOT in the text? Can I speed that up or avoid or??? Thanks! Ralf Tag: FileMode.CreateNew when file already exists Tag: 125614
  - 18
    - Program can't run: "The application has failed to start because its side-by-side configuration is incorrect" Hi All! I have this application of mine which works well. It even used to work on Vista. (I work on XP most of the time). There are some ManagedC++ assemblies in the project. Now when I try to start the project under vista, when I try to access classes in the ManagedC++ assemblies I get this error: ========================================== Exception : System.IO.FileLoadException Message : Could not load file or assembly 'NScribe, Version=1.0.2553.30928, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The application has failed to start because its side-by-side configuration is incorrect. Please see the application event log for more detail. (Exception from HRESULT: 0x800736B1) Source : NovaMindEditor Help : OSVersion : Microsoft Windows NT 6.0.5600.0 Thread : Stack : at NovaQuickStart.Program.StartApp(String[] args) at NovaQuickStart.Program.Main(String[] args) in C:\Development\Development\Windows\NovaQuickStart\Program.cs:line 59 -------- Caused by Exception -------- Exception : System.Runtime.InteropServices.COMException Message : The application has failed to start because its side-by-side configuration is incorrect. Please see the application event log for more detail. (Exception from HRESULT: 0x800736B1) Source : Help : Stack : ========================================== Any ideas? -- Regards, Lloyd Dupont NovaMind Software Mind Mapping Software <www.nova-mind.com> Tag: FileMode.CreateNew when file already exists Tag: 125609
  - 19
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  - 20
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  - 21
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  - 22
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  - 23
    - asp.net page send smtp mail too slow I have a web page that at the click of a button must send a bunch (1000+) emails. Each email is sent individually. I have the code working fine, using Mail Message classes and smtp and all that. But sometimes even when I'm just sending one e-mail the web page takes a minutes or so to post. When there is 1000+ the page can sit there for 10 minutes or more... Can anyone tell me why it is so slow, or how to fix the problem? To address this I am thinking of just creating a queue table to write the emails to, then using a .net console app running via sql agent scheduled job to periodically send the emails in batch mode. However, I worry that this may also be slow? Does anyone have a better architecture for this solution? If so give me some ideas. Thanks! Tag: FileMode.CreateNew when file already exists Tag: 125591
  - 24
    - FileLogTraceListener class Hi friends, Anybody tried using the FileLogTraceListener class for data logging to text files ? I've been reading this and getting more confused. If any noble, generous soul can explain it to me or better still share the code snippets to make it work I would be highly obliged. Thanks, Kunal Tag: FileMode.CreateNew when file already exists Tag: 125590
  - 25
    - Dictionary with duplicate values Hi: I need to use a Dictionary structure, but I need the key value to be duplicable. What generic collection can I use for this? TIA, Martin. Tag: FileMode.CreateNew when file already exists Tag: 125582

If I use System.IO.File.Open with FileMode.CreateNew, and the file
already exists I get an IOException. Ok... but there is no specific
exception for "file already exists", so how do I determine
programatically that that was indeed the cause?

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Re: FileMode.CreateNew when file already exists by doug

doug
Fri Jan 05 01:00:35 CST 2007

doug mansell wrote:
> If I use System.IO.File.Open with FileMode.CreateNew, and the file
> already exists I get an IOException. Ok... but there is no specific
> exception for "file already exists", so how do I determine
> programatically that that was indeed the cause?
>

oh silly me...

System.Runtime.InteropServices.Marshal.GetHRForException

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