Hash File Stream?

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  - 1
    - console.in.peek I have a console application in vb.net and I want to do a _kbhit() function. I assumed that console.in.peek would do the job, but it hangs up untill there is actually a key to peek at, it doesn't return immediately with a -1 like I expect. Is there an equivalent to kbhit() in .Net ? Can I control the conole's cursor postion and text color? Tag: Hash File Stream? Tag: 97588
  - 2
    - FrontPage Extensions I am creating an ASP=2ENET Web Application, but I am not using file= share, I want to use FrontPage extensions=2E MS Devel Environ wont= let me set up the project because "the project folder can't be= opened with FrontPage=2E" I have tried reinstalling FrontPage= Extensions and got an error message which says, You must first= install IIS 4=2E0" I looked in Administrative Tools and sure= enough my workstation does not have an IIS=2E What am I missing?= What do I need to install to give me IIS 4=2E0 or greater? -------------------------------- From: Frank Baed ----------------------- Posted by a user from =2ENET 247 (http://www=2Edotnet247=2Ecom/) <Id>yL8m+PtUKUKquvBYFKurmQ=3D=3D</Id> Tag: Hash File Stream? Tag: 97581
  - 3
    - What is DWORD equivalent in C# .Net? Hi, As the title indicated, does anyone know the answer? Tag: Hash File Stream? Tag: 97576
  - 4
    - How to return the pointer of int32 in C# .NET? Hi, I am a bit shocked that C# got nothing to do with C/C++. Here is what I wanted to do; Int32 f_nSomeValue = 200; // Supposed to be 4 bytes long in length, right? MemoryStream f_MemoryStream = new MemoryStream(20); f_MemoryStream.Write(&f_nSomeValue, 0 , 4); The first param of the MemoryStream is expecting byte[ ]. I tried to cast it but the complier would not let me to continue. Does anyone know how do I convert the int32 so that it is can be used on the MemoryStrem.Write( )? Thanks for reading. Tag: Hash File Stream? Tag: 97575
  - 5
    - Save a System.Drawing.Color in the db Hi, I have a DataTable that has a Color type DataColumn. I use OleDbDataAdapter.Update(myTable) to update the db. Is there a place(an event?) where i can do a type conversion from Color to string (or int) so that the value can be saved in the db? What is the preferred way of saving/reading Color DataColumns in the db? The point is the call to OleDbDataAdapter.Update(myTable) appears to be atomic an offers no event to do such a conversion. Therefore, you end up with a string column in the db, and an incompatible Color DataColumn in your DataTable ! I'm caught with this. Thanks for any help! Tag: Hash File Stream? Tag: 97572
  - 6
    - [OT] NNTP/newsgroup server Does anybody of you know about company hosting newsgroup server? I google like a madman but I'm rather unsuccesfull so far .. :( Tag: Hash File Stream? Tag: 97562
  - 7
    - Self populating collection Hi Has anyone encountered the following situation (I cant believe I am the first.) As part of a system I am designing I require a collection class that populates itself. So far I have a design along the following lines. public interface IFactory { IItem NewItem(); IItem[] NewItem(int count); } public interface IItem { void Load(OLEDBCommand Command); Implementers load internal values by executing command void Load(OLEDBDataReader DataReader);Implementers load internal values by reading current record. } public interface ISelfLoadingCollection { void Load(OLEDBCommand command , IFactory factory, bool loadAll); } public class SomeItemClass :IItem { ... Implementation of IItem and other class specific stuff. (You get the general idea) } public class SomeItemClassFactory:IFactory { ...Implementation of the IFactory stuff. IItem NewItem() { return new SomeItem(); } } public class SelfPopulatingCollection : DictionaryBase, ISelfLoadingCollection { ... Implements self loading collection stuff and exposes strongly typed dictionary of IItem's void Load(OLEDBCommand command , IFactory factory, bool loadAll); { Code here calls ExecuteReader on command, loops through rows calls newitem on the factory and passes the DataReader to the new IItem. The new IItem is then added to the dictionary. } } In the app I intend to create a new instance of the SelfPopulatingCollection, call the Load passing in the correct factory and command and watch it do its work. Why ? well I only want to write my collection management code the once and have all collections load the same way across my system (there are other reasons.) I am sort of happy with the design but it doesnâ??t feel entirely natural. The factory part seems inelegant (maybe the whole design is.) So I thought maybe someone had a better pattern for this. Who knows? rip it/me to shreds then ladies and gents. Regards Ben. Tag: Hash File Stream? Tag: 97561
  - 8
    - MSCORCFG I have just installed the Beta of the .Net framework version 2 on a test machine here and it does not install the mscorcfg.msc file anymore - where has this gone? -- Chris Holland Tag: Hash File Stream? Tag: 97560
  - 9
    - [OT] about VC# express is it legal to develop commercial application with VC# express? Tag: Hash File Stream? Tag: 97556
  - 10
    - DBConcurrency Exception Handling hi, I am creating a dbconcurrencyexception in my program. Update fails with 0 rows affected message. Because I changed the data in DB from SQL server front-end after my grid fills with data. i followed the example in msdn. in the handler, after prompting the user, i read the record from the DB and merge it with the current dataset. And try to update db again. The result is the same exception. Because merge does not override the original version of the record in the grid. So what should i do to handle this exception? Salim Tag: Hash File Stream? Tag: 97555
  - 11
    - Implementing an interface by relying on base class Hi, I'd like to do be able to implement an interface in a derived class by relying on the base class for some of the members. For example like this: Interface ITest Property prpA() As Integer Property prpB() As Integer End Interface Public MustInherit Class BaseClass Public Property prpA() As Integer Get Return 1 End Get Set(ByVal Value As Integer) End Set End Property End Class Public Class DerivedClass Inherits BaseClass Implements ITest Public Property prpB() As Integer Implements ITest.prpB Get Return 0 End Get Set(ByVal Value As Integer) End Set End Property End Class But the compiler doesn't recognise prpA as being present in DerivedClass. Can anyone tell me how I could get round this, and also why it should be that this is not allowed? Thanks, Gareth Tag: Hash File Stream? Tag: 97554
  - 12
    - Regular expression induced the program can't respond Now I have a regular expression: string pattern = @"[\s\S]*?(?<content>\<div id='news'\>\<div[\s\S]*?\<\/div\>[\s\S]*?\<\/div\>)[\s\S]*"; I want to use this pattern to match a html file's content,and replace the file's content with ${news}. But if the content is not match the pattern ,the program will lose response. Why ? and what shall I do? Tag: Hash File Stream? Tag: 97551
  - 13
    - Gridview, using Callbacks when Sorting and Paging For some reason when I enable the callback feature of the gridview I still get a page refresh, that is it seems like there is a postback that occurs, not a callback which is just supposed to update not the whole page, but a portion of the page. Strangely enough the URL below http://beta.asp.net/QUICKSTARTV20/aspnet/doc/ctrlref/data/gridview.aspx (VB GridView Paging and Sorting Callbacks example) has a callback example for gridview which explains that there should NOT be a page refresh, but it sure seems like the page refreshes (flickers) when I run the example. Also another example I found on the web on msdn http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnvs05/html/GrdDetView.asp (Listing 4. Using Callbacks when Sorting and Paging section) states that... <snipp> Client-Side Sorting and Paging The GridView control provides you with the option of sorting and paging records without requiring a form-post back to the Web server. In other words, you can re-render the contents of a GridView when sorting and paging, without needing to re-render the entire page. You enable client paging and sorting by assigning the value true to the EnableSortingAndPagingCallback property. When this property has the value true, the GridView uses JavaScript to request an updated set of records from the Web server. <snipp> I tried the piece of code that was provided... <html> <head runat="server"> <title>Callback GridView</title> </head> <body> <form runat="server"> <%=DateTime.Now %> <asp:GridView DataSourceID="TitlesSource" EnableSortingAndPagingCallbacks="true" AllowPaging="true" AllowSorting="true" Runat="Server" /> <asp:SqlDataSource ID="TitlesSource" ConnectionString= "Server=localhost;Database=pubs;Trusted_Connection=true" SelectCommand="SELECT * FROM Titles" Runat="Server" /> </form> </body> </html> but even though sorting and paging callbacks are ENABLED, the TIME which is NOT supposed to be updated, still gets updated everytime I do a sort or change the page. Does anyone have any idea why this is happening? Am I misunderstanding the whole concept of callbacks? I made sure I am using the 2.0 framework and using ASP.NET 2.0, just because I installed Visual Studio 2005 on top of my existing Visual Studio 2003. This sucks...I hope someone can shed some light for me into this. Thanks for your time and help in advance. Best Regards, Tim :-) Tag: Hash File Stream? Tag: 97550
  - 14
    - Send mail in BOTH html and text formats How can I send an email and include BOTH html and text format? Yes, I already know this is supported in framework 2.0...but how can I do it in 1.1? amil Tag: Hash File Stream? Tag: 97538
  - 15
    - FileStream.Read method Hi, Do you know how the method FileStream.Read populate the Char array if we don't use out or ref? Thank you, Roby Eisenbraun Martins Tag: Hash File Stream? Tag: 97534
  - 16
    - Read File Fast Hi, Which one is the fast way to open a file and read it. If possible without buffers and any other kind of conversion. I need one step from the harddisk to the Array. Right now I am using FileStream. Is this the best way? Thank you, Roby Eisenbraun Martins Tag: Hash File Stream? Tag: 97533
  - 17
    - Enable a windows form over another one? I want to disable a form after opening a new one in front of it and i use the enable property for this as Form4 newForm = new Form4(); newForm.Show(); this.Enabled = false; But how can I enable the the previous form over the new form after the job is finished with the new form that I opened. -- hard can be achieved! impossible takes a little time! Tag: Hash File Stream? Tag: 97532
  - 18
    - designers? I am getting this exception A first chance exception of type 'System.ComponentModel.Design.Serialization.CodeDomSerializerException' occurred in system.design.dll Additional information: The variable 'treeView1' is either undeclared or was never assigned. I am trying to call Deserialize on ((System.ComponentModel.Design.Serialization.RootCodeDomSerializer)(rootSeri alizer)) and that fails with internal exceptions on some of components (tree view and group box) which I placed on Panel. I am trying to design class derived from Panel. When I look at text of class, vars are initialized with new and added to Controls of Panel. Do I miss something? Rgds Alex Tag: Hash File Stream? Tag: 97530
  - 19
    - FileSystemWatcher not firing events if Path is an empty string Dear All, In my C# application using .NET 1.1 I am trying to watch for file and directory events using FileSystemWatcher. Things are working as expected if I watch a specific directory. However I need to watch all folders on the local computer and I understood MSDN documentation that I can achieve it by setting FileSystemWatcher.Path to an empty string. I also set FileSystemWatcher.IncludeSubdirectories to true. However with this combination of properties FileSystemWatcher does not seem to fire any Created/Deleted/Renamed events on XP SP2. Am I doing something wrong? Thanks, - LR Tag: Hash File Stream? Tag: 97521
  - 20
    - How to do simple memcpy in C#? Hi, I am very new to C#? How could I do a simple memcpy (in C/C++) in C#? Example; I have a Byte[] Data = new Byte[500]; And I want to copy various things like int32, other bytes etc into various section of the Data[]. How do I do that? With C/C++ is rather simple, which is memcpy( ). Thanks for readings and hope for some advices. Tag: Hash File Stream? Tag: 97514
  - 21
    - Text Files, Encoding and NewLine character hi, I'm creating a component to read text files. I'm using TextReader with Encoding Text component, because there are several different types of text files and the encoding component translates the bytes from this file to the correct characters. To which one of this text file's types almost all the time '\r\n' is the new line character. But sometimes it could not be, that's why I'm using NewLine property to know exactly who the next line characters are in which case. At that point all work's fine with TextWrite, but hell knows why TextReader doesn't have a NewLine property. Is there any way to identify the NewLine character of a determinate Encode system? or just stop using the NewLine and work only with '\r\n'? Another question, TextReader copies all file from the harddisk as soon as it is initiated, or it copies part of the file when I'm using Read();? Thank you, Roby Eisenbraun Martins Tag: Hash File Stream? Tag: 97495
  - 22
    - HOW TO CONNECT TO SQL SERVER 2000 DATABASE Hi Everyone: I am writing a Pocket PC applicatrion using VB .net 2003. I need to connect to a remote SQL server database and load records in DataGrid. Any help in doing so would be very helpfull. I try ; Imports System.Data.SqlClient Dim connection As New SqlConnection(ConnectionString) Dim adapter As New SqlDataAdapter(mySqlCmd, connection) But SqlDataAdapter line is not working... Looks like it does not like it. Is there is a way, we can call a SQL database records to a pocket PC application. I do not want to used Windows SQL CE though... Any help, would be good. Many Many Many Thanks Tag: Hash File Stream? Tag: 97476
  - 23
    - A challenge to all MVP's.......GET A J.O.B. for once in your life You guys who hang around here are some of the sorriest and most incompetent programmers( if you can even be called that) ever!!! The only thing you know are reference books and theory that's been proven wrong in the real world You sit in front of your computer answering the SAME nickel and dime questions day after day, week after week, year after year so you can't possibly have any real experience in making an actual program and all you do is give BAD advice to those seeking it here. As far as I am concerned, Microsoft should end the MVP program as all that it fosters is wanna be programmers who only give bad advice and never DO as they ADVISE. You have essentially ZERO experience in coding .NET to begin with. DEAR MICROSOFT: Kill off the MVP program. It only fosters people who strive for publicity in trying to get a programming job as opposed to being actually able to do the job. The MVP's only make programmers and the software industry look bad as a whole as these people are supposed to be MOST VALUEABLE....when in they in fact are the MOST WORTHLESS programmers ever, especially when they actually do get a job they only sit around with theory, and all that nonsense of architecture and best practices only to not even deliver the project to begin with. Why not put all that theory and knowledge to the test and actually see if it really works? Ha ha ha..like you can even do that? All these people do is get silly certification and they STILL CANNOT GET A JOB!!! Much less actually do the job.....Imagine that!!! It's no wonder companies go off shore, as the quality of software sucks anyway, so why pay extra in the US when it's going to be late, buggy and not what the customer wanted anyway. MESSAGE TO MVP's: WAKE UP!!! START DOING SOME REAL WORK or someone will make sure the world knows how incompetent you MVP's are and if you think you will have a hard time now flashing your MVP and Certification letters around, wait till they know the real truth about you and will think twice about even mentioning you have a certification or MVP status......and no talking in front of user groups don't count as most those groups are also like you, unemployed, can't get the job done right. Tag: Hash File Stream? Tag: 97472
  - 24
    - how to marshal an array of unmanaged structure into a managed array of structures. Hi, I am writing some code to Interop with COM=2E I have to= determine the parameters of COM function and I am using= FUNCDESC structure from typelibrary=2E My question is how to= marshal the lprgelemdescParam array structures=2E I have the= following code from another post in dotnet247=2E What I am trying to do is to print the function declaration= defined by FUNCDESC structure in =2Enet=2E Has anyone done this ? IntPtr ElementDescriptionArrayPtr =3D funcdesc=2ElprgelemdescParam; int ElementDescriptionSize =3D Marshal=2ESizeOf(new= COM=2EELEMDESC()=2EGetType()); for (int i =3D 0; i < funcdesc=2EcParams; i++) { COM=2EELEMDESC ElementDescription; int ElementDescriptionAddress; int ElementDescriptionArrayByteOffset; IntPtr ElementDescriptionPointer; ElementDescription =3D new COM=2EELEMDESC(); ElementDescriptionArrayByteOffset =3D i *= ElementDescriptionSize; ElementDescriptionAddress =3D= ElementDescriptionArrayPtr=2EToInt32(); ElementDescriptionAddress +=3D= ElementDescriptionArrayByteOffset; ElementDescriptionPointer =3D= (IntPtr)(ElementDescriptionAddress); ElementDescription =3D= (COM=2EELEMDESC)(Marshal=2EPtrToStructure(ElementDescriptionPointer,= = typeof(COM=2EELEMDESC))); string paramstring =3D= GetStringFromTypeDesc(typeinfo, ElementDescription=2Etdesc); builder=2EAppend(paramstring); if (i < funcdesc=2EcParams - 1) { builder=2EAppend(", "); } } Is this the correct way to do this ? I am not sure if I am= getting correct values back when I executed the above code? I= would appreciate any help on how to marshal an array of= unmanaged structure into a managed array of structures=2E Thanks -Arul -------------------------------- From: amags kumar ----------------------- Posted by a user from =2ENET 247 (http://www=2Edotnet247=2Ecom/) <Id>W5ImLKlkBk2TMJmjnBXagQ=3D=3D</Id> Tag: Hash File Stream? Tag: 97469
  - 25
    - Simple architecture question. Hi I have forty clients applications in different places of the city, they connect to a DB via Internet, until now the clients report information and receive information only when they read the DB.(half duplex) Now I need to be able to send information from the server to the clients using a central Application, I need to send things like messages, enable and disable options from the server . The Internet network is from an ISP and the server is DHCP. How can I send Data to the clients from the server? Do I need a VPN? IP fixed? any sug, any link, any documentation? thks a lot Tag: Hash File Stream? Tag: 97468
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  - 1
    - issue sending mail... When sending mail, I sometimes receive the error msg: "Could not access 'CDO.Message' object." I see in my SMTP log that I connect, hold the connection open for 4-5 min and then disconnect doing nothing. I see that I connect to this mailserver in other cases successfully, so I know that the mail server is not at fault. What could I be doing wrong? Thanks for the help. --gloria --------------------- MailServ58-US 06/02/2005 07:54:19 PM SMTP Server: xxx.xxx.com(xx.xx.xx.xx) connected MailServ58-US 06/02/2005 07:59:47 PM SMTP Server: xxx.xxx.com(xx.xx.xx.xx) disconnected. 0 message[s] received --------------------- MailMessage Message = new MailMessage(); Message.To = emailaddressStr; Message.From = this.FromEmailAddressStr; Message.Subject = emailsubjectStr; Message.Body = emailbodyStr; if (attachmentStr != "" ) { if (! File.Exists(attachmentStr) ) { RecordError(CurrentFunction,"Sending Email","Data", "Cannot attach file that does not exists.","","Cannot attach file: " + attachmentStr); return; } try MailAttachment myAttachment = new MailAttachment(attachmentStr); Message.Attachments.Add(myAttachment); } catch (Exception ex) { RecordError(CurrentFunction, "Sending Email", "System", "Could not attach file.", ex.Message, "File: " + attachmentStr + " Full error message output: " + ex.ToString()); return; } } try { SmtpMail.SmtpServer = this.MailServer; SmtpMail.Send(Message); } catch (System.Web.HttpException ehttp) { if (sendtologI == 1) { RecordError(CurrentFunction, "Sending Email", "System", "Could not send mail", ehttp.Message, "Full error message output: " + ehttp.ToString()); this.WriteLine(0,CurrentFunction,"Could not send email. Error Message: " + ehttp.ToString(),0); } } Tag: Hash File Stream? Tag: 97467
  - 2
    - Strange Excel importing problem I have a routine that imports a list of part numbers into a dataview: strExcel = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & boxFile.Text & ";Extended Properties=""Excel 8.0;HDR=NO""" cnnExcel = New OleDbConnection(strExcel) da = New OleDbDataAdapter("Select * from [ODRJYUFI$]", cnnExcel) da.Fill(ds, "Excel") dv = New DataView(ds.Tables("Excel")) This works fine exept when the following condition happens: The part numbers are alpha-numeric. When a numeric only part number (mixed in with alpha's) is read in, NULL is stored. The routine will read in numeric values ONLY when all the part numbers in the spreadsheet are numeric. I've tried formatting the column in the spreadsheet as Text to try and trick the routine, with no luck. Any suggestions? Thanks Tag: Hash File Stream? Tag: 97460
  - 3
    - TextBox .text value will not update I have several TextBoxs in a datalist control and am allowing a user to make changes to them. Everything works fine but when I execue the update command for the datalist and use the FindControl method to read the value of the text box the changes made by the user are lost and the value is what was originally placed there by the databind function. I have seen samples for what I am attempting and I am using it exactly as they are. Has anyone else had this problem? I am pulling out my hair with this because it's taking me so long. Tag: Hash File Stream? Tag: 97459
  - 4
    - Windows service Unable to access mapped drives on XP and 2003 Boxe I have written a Windows Service which enumerates the files in a directory. I am trying the enumerate the files of a mapped drive.It works fine on a windows 2000 Box.But the same ,does'nt work on a xp or a 2003 machine. Any Ideas why it would do that??? Thanks MVB Tag: Hash File Stream? Tag: 97455
  - 5
    - shdocvw ow resolve this http://www.tech-archive.net/Archive/DotNet/microsoft.public.dotnet.framework.interop/2004-06/0294.html i put [STAThreadAttribute()] or [STAThread()] int he main() but don't work.... thank Tag: Hash File Stream? Tag: 97454
  - 6
    - My application works fine in debug mode but does not work in release I have an application that works correctly in debug mode but it does not work in release. I am not using anything of the class system.diagnostics. I tried to disable the optimization code, but this did not work please I need a solution quickly!!. Thanks. Tag: Hash File Stream? Tag: 97447
  - 7
    - Finalize Queue (WinDBG / SOS) All, I am playing with WinDBG and SOS. If I run !FinalizeQueue I get SyncBlock to be cleaned up: 0 ---------------------------------- generation 0 has 6 finalizable objects (0x0015a370->0x0015a388) generation 1 has 0 finalizable objects (0x0015a370->0x0015a370) generation 2 has 0 finalizable objects (0x0015a370->0x0015a370) Ready for finalization 0 objects (0x0015a388->0x0015a388) All Finalizable Objects Statistics: MT Count TotalSize Class Name 0x00935120 3 36 ConsoleApplication12.GoodClass 0x79bd9a14 3 156 System.IO.StreamWriter why do i see GoodClass? i have called dispose on this, see my code at the end. I am trying to workout if my very large app is disposing objects correctly, using winDBG sugested that it wasent, but i was sure that it was, so i wrote this test project and it also does not seam to dispose objects. Here is the code : using System; using System.Threading; namespace ConsoleApplication12 { class BadClass { public BadClass() { System.Console.WriteLine("Hello"); } ~BadClass() { System.Console.WriteLine("Sleep"); Thread.Sleep(Timeout.Infinite); } } class GoodClass : IDisposable { public GoodClass() { System.Console.WriteLine("Hello"); } ~GoodClass() { System.Console.WriteLine("Sleep"); Thread.Sleep(Timeout.Infinite); } #region IDisposable Members public void Dispose() { // TODO: Add GoodClass.Dispose implementation System.Console.WriteLine("Bye "); GC.SuppressFinalize(this); } #endregion } class EntryPoint { static void Main(string[] args) { /* BadClass b1 = new BadClass(); BadClass b2 = new BadClass(); BadClass b3 = new BadClass(); */ GoodClass g1 = new GoodClass(); GoodClass g2 = new GoodClass(); GoodClass g3 = new GoodClass(); g1.Dispose(); g2.Dispose(); g3.Dispose(); /* System.GC.Collect(); System.GC.Collect(); System.GC.WaitForPendingFinalizers(); */ Console.WriteLine("Done"); Console.ReadLine(); } } } Tag: Hash File Stream? Tag: 97445
  - 8
    - Parameter Methods Performance (val,ref,out) Hi, I would like to know which one of the following parameter types is faster. I think is ref because sending a pointer to a class seems to be much more faster then copy all the class at once in the method call. But when I was having classes about C# programming in Microsoft Official Course, my teacher told me that in .NET val is faster, that's why it is the default parameter type. But he couldn't explain why. Any ideas? Thank you. Roby Eisenbraun Martins Tag: Hash File Stream? Tag: 97441
  - 9
    - article 829977 - A memory leak condition occurs when you run COM+ article 829977 - A memory leak condition occurs when you run COM+ 1.0 on a computer that is running Windows 2000 SP4 When trying to run the hotfix for this on windows 2000 server, I'm having a problem. It doesn't run on windows 2000. Do you have a solution for this problem? - EJ Tag: Hash File Stream? Tag: 97428
  - 10
    - Detecting overriding with reflection? Given a System.Type, I would like to detect whether the method object.GetHashCode() has been overriden or not ? How can I achieve that with reflexion? I have read the MethodBase documentation, but I do not see any solution for now. Thanks in advance, Joannès http://www.vermorel.com Tag: Hash File Stream? Tag: 97426
  - 11
    - String manipulation I am using Microsoft.VisualBasic.Strings.InStr() and Microsoft.VisualBasic.Strings.Mid() to manipulate strings. Is there a better way ? i.e. by using the framework. Thanks, Craig Tag: Hash File Stream? Tag: 97424
  - 12
    - How to tell if PropertyInfo defines a static or instance property Given a PropertyInfo object, how can I determine if the property that it describes is a static or instance property? The same question applies to EventInfo. MethodInfo, ConstructorInfo and FieldInfo all have an IsStatic member, but PropertyInfo and EventInfo do not have this member, which seems a bit strange. Tag: Hash File Stream? Tag: 97423
  - 13
    - Process.Start("MyComputer"); Hi, I'm trying to launch an instance of explorer from windows that will default to the "My Computer" branch. Any suggestions? I've tried: string myComp = Environment.SpecialFolder.MyComputer.ToString(); System.Diagnostics.Process.Start(myComp); which fails, is there a special folder that i can give to explorer as an argument? Thanks Tag: Hash File Stream? Tag: 97421
  - 14
    - Checking for implementation of an interface I have an application that accepts plugins. It allows the user to choose which plugins they want to run from a list of available plugins. My problem is that I need to build that list of plugins by checking the assemblies in the plugins folder to see if they implement the plugin interface. If I load each assembly and check it, then I have all those assemblies in memory until the application gets shutdown, even though the user may only want to use a few of them. My idea was to load them all into a separate appdomain to check them and build my list, and then unload that domain. Then I could just load the plugins that the user chooses. My problem is that I don't know how to check the assembly to see if it implements the plugin interface once its loaded into the separate appdomain. Can anyone point me to an article on this, or some sample code? Thanks! Tag: Hash File Stream? Tag: 97414
  - 15
    - EnvDTE and EnvDTE80 I am using Visual Basic Express (May release) and I am trying to create a solution programatically. How do I do this? I know I need to use the AddFromTemplate but how do I determine the path to the template that I want to use, let's say the template is the "winfxapplication" template, which on my machine is "C:\Program Files\Microsoft Visual Studio 8\Common7\IDE\VBExpress\ProjectTemplatesCache\1033\WindowsApplication.zip\windowsapplication.vstemplate" Or do I point it at the .vbproj file: "C:\Program Files\Microsoft Visual Studio 8\Common7\IDE\VBExpress\ProjectTemplatesCache\1033\WindowsApplication.zip\windowsapplication.vbproj" I'm assuming there are just a few lines of code required. First of all, I want to create a VS2005 object. I have tried: Dim env As EnvDTE80.DTE2 = CType(Microsoft.VisualBasic.Interaction.CreateObject("VisualStudio.DTE.8.0", ""), EnvDTE80.DTE2) but that tells me it cannot create the ActiveX object. I then tried: Dim env As EnvDTE.DTE = CType(Microsoft.VisualBasic.Interaction.CreateObject("VisualStudio.DTE.7.1", ""), EnvDTE.DTE) and that creates the object, so when I do this: ENV.Solution.ADDFromTemplate("C:\Program Files\Microsoft Visual Studio 8\Common7\IDE\VBExpress\ProjectTemplatesCache\1033\WinFXApplication.zip\WinFXApplication.vbproj", "e:\mytests", "myproject.vbproj") I get the message "The file blah blah is not a valid project file. The project file is missing the 'VisualStudioProject' section." whatever that means. I think I am on the right track here, can anybody out there just straighten me out on this? I am starting to tear my hair out. Thanks in advance, Richard Tag: Hash File Stream? Tag: 97413
  - 16
    - Protecting classes with LicenseManager: COM issue Hello, I have a class (C#) in an assembly that I wish to protect with a licensing scheme. The class is designed to be consumed by any other managed code language, and via COM clients. That is, the class is registered for COM interop, and may be instantiated by VBS code, etc. We are using the inherent .NET Framework licensing classes. We've used the LicenseProviderAttribute to specify a LicenseProvider descendent. The LicenseProvider descendent's GetLicense() method checks the LicenseContext for LicenseUsageMode.Runtime or LicenseUsageMode.DesignTime. This works great when the class is being instantiated by a .NET application. We run into a problem when the class is instantiated via COM interop from, say, a VBS script. When started this way, the GetLicense() method LicenseContext argument is _always_ LicenseUsageMode.DesignTime. This upsets the licensing model we want to use. Is this working as designed? I had hoped a class instantiated via COM interop would be seen to be working in LicenseUsageMode.Runtime mode, not LicenseUsageMode.DesignTime. Thanks in advance, Grant Tag: Hash File Stream? Tag: 97411
  - 17
    - How to convert char[] buffer into Image? Hi, Sorry if this question sound stupid, how do I actually convert a char[] buffer into Image? I am currently using C# and compact .net framework for PocketPC development. Thanks for reading. Tag: Hash File Stream? Tag: 97404
  - 18
    - VB 6 app calling C# windows service Hi Guys, Has anyone written a windows service in C# that used multiple threads, then wrote a VB 6 application that called the various methods on the C# Service? Any problems with it? Thanks Tag: Hash File Stream? Tag: 97402
  - 19
    - Call was rejected by callee Hi, I am having a problem with a vb.net mappoint application. Currently in my application I have pushpins that move according to GPS locations that are constantly being updated. Everything seems to work fine but when I start using the toolbar functions in the mappoint object while tracking/updating points I always get this following error: An unhandled exception of type 'System.Runtime.InteropServices.COMException' occurred in TrackBerryMapPoint.exe Additional information: Call was rejected by callee. For example, if i use the location search bar while I'm tracking, the find dialog box pops up and then everything crashes. I'm using a timer for the updates of the tracking points and I think that might cause the exception. If anyone has an suggestions I'd appreciate it very much. Thanks Tag: Hash File Stream? Tag: 97398
  - 20
    - Subform ia unexpectedly closing parent form problem Hi, I'm using the .NET environment, writing in C#. I have a windows form application which is causing me a headache. I have a main form and also a subform, when I close the subform, the main form also closes, which obviously terminates the application. I've checked my dialog result from the subform and it's all looking fine. The form was imported from another project with no apparent issues, I'm not sure if this has any thing to do with it? Many thanks for your input. Stuart Tag: Hash File Stream? Tag: 97397
  - 21
    - Some services stop automatically if they have no work to do, for e I got a Server Class in an executable and I would like to change this in a windows service. The code from the main function of the executable is the following: LoadReportingServer server = new LoadReportingServer (); server->Start (); Console::WriteLine (S"Press ENTER to stop the server..."); Console::ReadLine (); server->Stop (); server = 0; I tried to turn this into a service following two tutorials, and it compiles fine. Whenever I start the Service in the Service Manager, I get the Message that my service started and stopped again. Attempt 1: using System; using System.Collections; using System.ComponentModel; using System.Data; using System.Diagnostics; using System.ServiceProcess; namespace SoftwareLoadBalancing { public class LoadReportingService : System.ServiceProcess.ServiceBase { /// <summary> /// Required designer variable. /// </summary> private System.ComponentModel.Container components = null; private LoadReportingServer server; public LoadReportingService() { // This call is required by the Windows.Forms Component Designer. InitializeComponent(); // TODO: Add any initialization after the InitComponent call } // The main entry point for the process static void Main() { System.ServiceProcess.ServiceBase[] ServicesToRun; // More than one user Service may run within the same process. To add // another service to this process, change the following line to // create a second service object. For example, // // ServicesToRun = new System.ServiceProcess.ServiceBase[] {new Service1(), new MySecondUserService()}; // ServicesToRun = new System.ServiceProcess.ServiceBase[] { new LoadReportingService() }; System.ServiceProcess.ServiceBase.Run(ServicesToRun); } /// <summary> /// Required method for Designer support - do not modify /// the contents of this method with the code editor. /// </summary> private void InitializeComponent() { components = new System.ComponentModel.Container(); this.ServiceName = "LoadReportingService"; } /// <summary> /// Clean up any resources being used. /// </summary> protected override void Dispose( bool disposing ) { if( disposing ) { if (components != null) { components.Dispose(); } } base.Dispose( disposing ); } /// <summary> /// Set things in motion so your service can do its work. /// </summary> protected override void OnStart(string[] args) { // TODO: Add code here to start your service. server = new LoadReportingServer(); server.start(); } /// <summary> /// Stop this service. /// </summary> protected override void OnStop() { // TODO: Add code here to perform any tear-down necessary to stop your service. server.Stop (); server = null; } } } This does not do anything but displaying the message that it started and stopped again. Attempt 2: using System; using System.Collections; using System.ComponentModel; using System.Data; using System.Diagnostics; using System.ServiceProcess; using System.Threading; namespace SoftwareLoadBalancing { public class LoadReportingService : System.ServiceProcess.ServiceBase { /// <summary> /// Required designer variable. /// </summary> private System.ComponentModel.Container components = null; private ThreadStart threadDelegate; private LoadReportingServer server; public LoadReportingService() { // This call is required by the Windows.Forms Component Designer. InitializeComponent(); // TODO: Add any initialization after the InitComponent call } // The main entry point for the process static void Main() { System.ServiceProcess.ServiceBase[] ServicesToRun; // More than one user Service may run within the same process. To add // another service to this process, change the following line to // create a second service object. For example, // // ServicesToRun = new System.ServiceProcess.ServiceBase[] {new Service1(), new MySecondUserService()}; // ServicesToRun = new System.ServiceProcess.ServiceBase[] { new LoadReportingService() }; System.ServiceProcess.ServiceBase.Run(ServicesToRun); } /// <summary> /// Required method for Designer support - do not modify /// the contents of this method with the code editor. /// </summary> private void InitializeComponent() { components = new System.ComponentModel.Container(); this.CanPauseAndContinue = true; this.ServiceName = "LoadReportingService"; } /// <summary> /// Clean up any resources being used. /// </summary> protected override void Dispose( bool disposing ) { if( disposing ) { if (components != null) { components.Dispose(); } } base.Dispose( disposing ); } /// <summary> /// Set things in motion so your service can do its work. /// </summary> protected override void OnStart(string[] args) { // TODO: Add code here to start your service. server = new LoadReportingServer(); threadDelegate = new ThreadStart(server.Start); Thread newThread = new Thread(threadDelegate); newThread.Start(); } /// <summary> /// Stop this service. /// </summary> protected override void OnStop() { // TODO: Add code here to perform any tear-down necessary to stop your service. server.Stop (); server = null; } } } This does not do anything but displaying the message that it started and stopped again. What am I doing wrong? Can anybody help me? Thanks in advance Chucker Tag: Hash File Stream? Tag: 97396
  - 22
    - Create forms from threads Hi, I need to be able to create one or more form(s) from a method that is called from different threads. When this form is created, it appears but it does not receive any message. It looks blank, and when you move your cursor over it, it becomes an hourglass. Can anyone help me with this? Thanx in advance... Kind regards, Kevin Chabot Tag: Hash File Stream? Tag: 97392
  - 23
    - "scrolling buttons" I would like to make some kind of buttons that can be used to scroll other things. Actually it would like it to be exactly as in Lightwave's Envelope Editor - when you push the button, the mouse pointer should disappear and you should be able to scroll something with moving your mouse up/down and left/right. Perphaps hiding mouse wouldn't be that hard [or would it?], but I wonder about "scrolling" itself - I generally use MouseMove event, and in this case the pointer would quickly leave the button's area and i would get no event to handle... What's the best way to deal with that? Thanks for reading this :-) -- michal.'creed'.szostakiewicz............................coder.of.ultimaa... .creed@tarchomin.pl ....................................................... .ms201103@zodiac.mimuw.edu.pl ............................................. .icq.2482112 ...........................iMMersE.your.soUL.in.lOVE......<><. Tag: Hash File Stream? Tag: 97391
  - 24
    - Printing using VB.NET Windows Applications Hi. I developed an application in vb.net. This app send any type of file to print. I selected this printer in my app. I use this following codes: Seting default printer before print Public Sub SetDefaultPrinter(ByVal PrintName As String) Dim WshNetwork As Object = CreateObject("WScript.Network") WshNetwork.SetDefaultPrinter(PrintName) WshNetwork = Nothing End Sub Printing the file Public Sub Imprimir(ByVal FileName As String) Dim pr As New Process pr.StartInfo.FileName = FileName pr.StartInfo.Verb = "Print" pr.StartInfo.CreateNoWindow = True pr.StartInfo.WindowStyle = ProcessWindowStyle.Hidden pr.Start() End Sub My problem: I have 2 printers, Printer A and Printer B . In print A I can print, but in print B I cannot. These printers are installed in the network. I can pirnt in the printer B via MS Word. Does anyone know whatÂ´s hapining? Any ideas? Tag: Hash File Stream? Tag: 97389
  - 25
    - 1.1 and 2.0 Can I install the 1.1 framework with the 2.0 framework on the same server and run VS2003 and VS2005 at the same time? I installed 2.0 on a workstation and it looks like the 1.1 framework stayed put. If anyone can clarify this it would be greatly appreciated. Thanks all, Andy Tag: Hash File Stream? Tag: 97388

Hello,

I'm writing a security related application in .NET 1.1
and I wonder how I compute hashes from very large files (up to 1 GB).

Does anybody know a good pattern of how to create a stream from a binary
file
and compute the hash of it?

I appriciate your comments.
Thanks in advance, Sebastain Dau.

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Re: Hash File Stream? by Bill

Bill
Mon Jun 06 14:24:35 CDT 2005

FileStream fs = new FileStream(...);

HashAlgorithm ha = (HashAlgorithm) CryptoConfig.CreateFromName("MD5");
byte[] Hash = ha.ComputerHash(fs);

"Sebastian Dau" <sebastian.dau@gmx.de> wrote in message
news:42a48fe4$0$304$4d4ebb8e@read-nat.news.de.uu.net...
> Hello,
>
> I'm writing a security related application in .NET 1.1
> and I wonder how I compute hashes from very large files (up to 1 GB).
>
> Does anybody know a good pattern of how to create a stream from a binary
> file
> and compute the hash of it?
>
>
> I appriciate your comments.
> Thanks in advance, Sebastain Dau.
>
>

Top