Great new development community concept

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  - 1
    - Can ternary conditional expressions be represented in the CodeDOM? ... I know I could use a CodeSnippetExpression to do it, but that would somewhat hardcode the resulting tree. I was looking for something like: CodeTernaryExpression( CodeExpression test, CodeExpression trueExpression, CodeExpression falseExpression); Which would, of course, get turned into the corresponding: (test ? trueExpression : falseExpression) expression in C#, C++, or even J# (I believe). I guess it's only VB.NET that doesn't have a ternary expression but I don't know for sure. I know, I know, for generated code there's no real reason to use a ternary expression, but coding habits are hard to break, even when writing meta-code :-) Regards, -- TB Tag: Great new development community concept Tag: 131740
  - 2
    - A list of people in an active directory group. I am using System.Security.Principal to identify clients and allow functionality based on the groups they belong to. In one case I would like to let them know who can do the function they cannot. How do I list the members of a group? Thanks Tom Tag: Great new development community concept Tag: 131739
  - 3
    - Problem with SslStream when using Windows Vista Hi. When my client program runs under XP and calls a server (solaris in this case) via an SslStream all is well. The client may make multiple calls and multiple authentication calls and be fine. I expressly "clean up" everything streamwise and socketwise and all is well. Running the client under Vista, when the second authentication call is made it returns the following SSPI error: "A call to the SSPI failed, see inner exception" which reads "the Local Security Authority cannot be contacted" Well that was pretty mystifying so I looked at what was going on with ethereal. Apparently, on the second authentication go-round Vista asks the server to re-use a session Id. The server responds and then Vista rejects a re-used session Id (even though it asked to do that). What I have found out is that the .net framework caches SslStream sessions automatically, I have not found any way to turn this off for Vista - any ideas on how to do this or to get Vista to use the cached SessionId which it requested? Here is a link to a sample that seemingly generates the same flaw that I have described. http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=1222194&SiteID=1 Thanks Dave Tag: Great new development community concept Tag: 131731
  - 4
    - DataMemberAttribute Can a Dictionary<Tkey, Tvalue> DataMember in a DataContract holds objects with different types? Tag: Great new development community concept Tag: 131728
  - 5
    - Terminate a child process when parent process is killed Hello, I'm using a C# application to create a process "A" to execute an .exe file. The problem is that when the application is killed (for example from task manager) the child process keeps on running. The question is how can i run the "A" process so that when my application is killed or crashes the child process "A" will be terminated? I'm using this code: Process A = new Process(); A.StartInfo.FileName = some_exe_path; A.Start(); Thanks in advance Tag: Great new development community concept Tag: 131724
  - 6
    - .NET Framework 2.0 for Windows XP SP1 I noticed on the Microsoft .NET Framework 2.0 download page that Windows XP SP1 is not a supported environment. Does this mean that the 2.0 Framework will not work on an XP system with only SP1 installed? The reason I ask is because I know someone who attempted to install the 2.0 Framework on three of his Windows XP SP1 computers, and each time the install completely froze his system, although, after rebooting, it turns out the Framework was installed successfully. Thanks - Amos. Tag: Great new development community concept Tag: 131722
  - 7
    - Windows Forms App as Console App Hi I want to start a Visual Basic Windows Form app from the console by specifying parameters (this is possible in C#), is i add the following method i get a error Public Sub Main(ByVal args As String()) Console.Write(args.Length) End Sub the above method works in a console app. can someone help in this regard TIA Barry Tag: Great new development community concept Tag: 131721
  - 8
    - Wrapper assembly - VS2005! Hi, I am trying to use a managed dll (does not have a strong name) in my app/dll which is signed. I get an error "Referenced assembly does not have a strong name". i tried using the tlbimp.exe to create a wrapper dll which has a strong name but get the error "TlbImp : error TI0000 : The input file 'xyz.dll' is not a valid type library.". Any ideas on how i can do this? is there an equivalent of the project property "Wrapper Assembly Key file in VS.Net" which i can use in VS2005. Thanks, - SA Tag: Great new development community concept Tag: 131720
  - 9
    - DataTable.Select with condition with Timespan values Hi to All, i'm using C# in .NET 2.0 and i have a DataTable A with a column of type TimeSpan used to store HOUR info. I'm trying to filter my DataTable A selecting only rows that have the column HOUR > .... if i try to Call A.Select( " HOUR > '10:30:00' " ) i receive an error ( cannot compare TimeSpan with String ...) if i try to call A.Select ( " HOUR > 10:30:00 " ) i receive an error ( invalid token : ) if i try to call A.Select ( " HOUR > Convert('10:30:00',System.TimeSpan) " ) i receive an error ( string '10:00:00' is not a valid TimeSpan ) if i try to call A.Select ( " HOUR > #10:30:00#" ) i receive an error ( Cannot compare TimeSpan with Date ) ... ... i think that i missed only the right way to write my filter. Can someone help me? Thank you in advance. Regards, Massimo Tag: Great new development community concept Tag: 131719
  - 10
    - Should be simple C++ managed header include question I have a split container on my form, from within one of them I wish to reach the main from of the app. I'm having problems with the headers and namespaces. I want something like this: //within right pane form ABCForm^ abcForm = (ABCForm^)Application::OpenForms["ABCForm"]; abcForm->ExecutePublicFunction(); If I include the main form header I get: 'ABCForm' : undeclared identifier 'abcForm' : undeclared identifier syntax error: ')' and many more.... The two forms are of the same namespace. if within the namespace I do this: namespace ABC{ ref class VPEForm; public ref class OtherForm : public Form { the line: ABCForm^ abcForm = (ABCForm^)Application::OpenForms["ABCForm"]; will compile without complaint. But then the line: abcForm->ExecutePublicFunction(); I get: use of undefined type : 'ABC:ABCForm' Like it sees the 'ref class VPEForm' as the complete definition of the class. So what's the proper way to reference the other form and handle the includes and namespace from another form? This should be simple I know... Thanks, Steven Tag: Great new development community concept Tag: 131718
  - 11
    - Hook Event for All Property Set? Can I have an example of wiring up an Event (handler) that can be fired no matter what property Set accessor is touched? I have a lot of get/sets on public properties and I would like to create something in the class constructor that would be automatically called whenever anything was Set. Thanks. Tag: Great new development community concept Tag: 131717
  - 12
    - MailMessage-Object error - net 1.1 , VS 2003 Hello, I have a simple program which sends emails. The main function is: private bool InitAndSendEmail(string mailTo, string subject, string txt, string mailFrom) { MailMessage myMail = new MailMessage(); try { myMail.From = mailFrom; myMail.To = mailTo; myMail.Subject = subject; myMail.Body = txt; string smtpServer = "mail.kybtec.de"; string userName = myMail.From; string password = "12345678"; int cdoBasic = 1; int cdoSendUsingPort = 2; myMail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpserver", smtpServer); myMail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpserverport", 25) ; myMail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendusing", cdoSendUsingPort) ; myMail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpauthenticate", cdoBasic); myMail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendusername", userName); myMail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendpassword", password); myMail.BodyEncoding = Encoding.UTF8; myMail.BodyFormat = MailFormat.Html; SmtpMail.SmtpServer = smtpServer; SmtpMail.Send(myMail); myMail = null; return true; } catch(Exception ex) { MessageBox.Show(ex.Message); return false; } } This works fine if I only send for example 10 emails. If I send for example (loop based) 300 emails the following happens. The first 100 emails are sent. Now I get the exception. 'Could not access CDO.Message object'. This is not a problem of the email server. Because: If I wait for example 1 hour, I can again send 100 or so emails then the error. Or I can boot the computer, then I can send 100 or so emails and then the error again. Seems that there is something locked after a number of emails on the computer. Thank you for any help. Rolf Welskes Tag: Great new development community concept Tag: 131716
  - 13
    - Windowsservice needs to receive events What is a good way to have a windowsservice receive events? I want to change some settings of the service without restarting it (mainly log-level of log4net ). I thought about using MSMQ. The problem I see with it is: If the service is not startet messages are not consumed. regards Mathias Fritsch Tag: Great new development community concept Tag: 131714
  - 14
    - WPF Question. I'm not sure which is the right forum to post this question - so this is as general as can be. There question is about treeview in WPF: I'm trying to implement drag and drop in TreeViews, poking all sorts of options for their display. The code I'm based upon is Josh Smith's ListViewDragDropManager, and just converted it to manage treeviews, with almost all of the same code. The logics are all exactly the same, and the display is also from another project I saw recently. What I came across is just very weird: when I expand a TreeViewItem, then collapse it, the TreeViewItem thinks it's still expanded. all of the DragOver events come from the incorrect treeviewitem, which is ofcourse very bad. The best way to understand what I'm saying is to look at this test project, and do the following: 1. drag the first item around a little, see that you get all the normal behavior. 2. expand the first item. 3. collapse the first item. 4. try the drag operations again. notice how when you pass over items from the second row, the mouse thinks it's over the first row treeviewitem. solution is here(zip) : http://www22.brinkster.com/betzera/ohev/dev301/treeview%20dragger.zip 10x, Dani Tag: Great new development community concept Tag: 131712
  - 15
    - I just reveal that "Make single instance Application" has side affect if you use with Enable Application Framework, and check the option "Make single instance Application" you can suprise to know that this option Register tcp Chanel. So if you meant to register one by tour self, your program give Error that you cant do it twice. Any MPV to tel us why, and how? (according my test, the "Make single instance Application" not prevent multi instance on multi session on Terminal server. so why this option not check by process name?) Tag: Great new development community concept Tag: 131707
  - 16
    - Is this thread safe? public void WriteToLog(string message) { StringBuilder bld = new StringBuilder(); bld.AppendFormat(null,"{0} {1}", DateTime.Now.ToString("yy- MM-dd hh:mm:ss"),message); StreamWriter sw = File.AppendText(m_LogFile); sw.WriteLine(bld.ToString()); sw.Flush(); sw.Close(); } MSDN says all static members in System.IO are thread safe, but here an object of type StreamWriter is created from AppendText and I'm not sure...... Do I need critical section or not? Thanks! Tag: Great new development community concept Tag: 131702
  - 17
    - V C++ .NET version 2003.Compiler problem. V C++ .NET version 2003.Compiler problem. My compiler is acting up. When I have building error, the left margin pointer will point to the wrong line. Sometimes, the deferent between the line that has the error and the line it pointed to can be more than twenty lines. Sometimes, It will give error message for something that I commented (//). As soon as I delete the commented line, the building error will disappear . I uninstalled the compiler and install it again: I still have the same problem. I used to have version 2005, I Uninstalled it and I still have the same problem. I recently installed the service pack recommended for this compiler. I wonder if any body has experienced something like this, before. Or anybody has an idea; what is the reason for that and how can I fix this problem; I would appreciate it. I recently installed the service pack recommended for this compiler Tag: Great new development community concept Tag: 131701
  - 18
    - operator overloading I have 2 objects which could be of any type (but both are of same type) I would like to check if it has the "greater than" or "less than" operator overloaded. If it does, then i would like to compare the 2 objects using the operators. Is this possible to do? In general, i am solving this problem, "If 2 objects can be compared, return their comparison value". I can check if they implement IComparer/IComparable but i don't know how to proceed after that. Tag: Great new development community concept Tag: 131694
  - 19
    - Limit of C# versus languages like Java? There's tons of articles on the net that say that java works on solaris, windows, mac etc. Does this mean Microsoft's C# is limited to Windows? But if not, what limits does it have? Would everyone need the .NET Redist. to run WEB applications? Is it any faster? Tag: Great new development community concept Tag: 131689
  - 20
    - Unknown Properties in ASPX Pages Hi I have a aspx page which has the following properties (xat-???) , i get an error on my local system, but its okay on the clients website. xat-href="http://www.????.com/ShowAd.aspx?id=<%# Eval('id') %>" xat-href-val="http://www.????.com/ShowAd.aspx?id=<%# Eval('id') %>" xat-src="http://www.????.com/upload/{PreviewImageId}.Md.jpg" xat-src-val="http://www.????.com/upload/45.Md.jpg" does anyone know where these properties are comming from. TIA Barry Tag: Great new development community concept Tag: 131686
  - 21
    - Machine locks up running app off network I have a .NET application that is run off of a shared network drive. About 5 users (out of 100) periodically have their entire machines deadlock when they try to run the application. I was able to reproduce the issue a couple times on one of the user's machines. One time I had the Task Manager open when I launched the app and the Task Manager also stopped responding (ctrl-alt-delete did nothing either) I tried re-installing the .NET Framework, but I was still able to get the machine to lock up when I launched the application. I also tried running the application locally and was not able to get the machine to lock up though this is not an ideal solution. The reason we run it from the shared drive is so that we do not have to distribute updates to every user. I did some research and read about how deadlocks can occur in mixed- mode dlls if you try to run managed code in the DllMain of the unmanged code, but we do not have any unmanaged code in our app. Even if we did, that would only deadlock the process it is running in and not the whole machine, correct? It seems like the machine is deadlocking when the CLR is loading the application but before it starts executing b/c the splash screen for the app isn't shown before the machine stops responding. Does anyone have any ideas on what could be causing this behavior? Tag: Great new development community concept Tag: 131684
  - 22
    - BUG? XmlSerializer serializes List<> { get; } property twice [LONG Framework: .NET 2.0 Description: The code (see below) is an extract of a larger application. The main points are: 1. There ist an abstract base class 2. This class has a virtual List<> { get; } property 3. The property is decorated with XmlArrayItem attributes 4. A class derives from the base class 5. This class overrides the List<> property 6. There is an identical (for the sample code, not in real life) other class deriving from the abstract base class 7. The XmlSerializer gets both derived types as extraTypes in the constructor One of the derived classes serializes correctly the other gets the List<> property serialized twice. Actually this behaviour is much more strange: 1. If another (equal) derived class is added this shows that only the FIRST extraTypes[] class is serialized correctly, all others got duplicate members 2. When the List<> is replaced by an Array [] { get; set; } there seems to be no problem Is this a known bug and especially is there a known work-around? Regards Jochen ############### SAMPLE CODE OUTPUT, ERROR IN C2 / D2 ######## .... <?xml version="1.0"?> <B xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w 3.org/2001/XMLSchema"> <All> <A> <All /> </A> </All> </B> <?xml version="1.0"?> <C xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w 3.org/2001/XMLSchema"> <All /> </C> .... <?xml version="1.0"?> <B2 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www. w3.org/2001/XMLSchema"> <All /> </B2> <?xml version="1.0"?> <C2 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www. w3.org/2001/XMLSchema"> <All> <A2> <All /> </A2> </All> <All> <A2> <All /> </A2> </All> </C2> <?xml version="1.0"?> <D2 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www. w3.org/2001/XMLSchema"> <All> <A2> <All /> </A2> </All> <All> <A2> <All /> </A2> </All> </D2> ######### SAMPLE CODE ############### using System; using System.IO; using System.Xml; using System.Text; using System.Xml.Serialization; using System.Collections.Generic; namespace StrangeSerializer { public class A { [XmlArrayItem(typeof(A))] [XmlArrayItem(typeof(B))] [XmlArrayItem(typeof(C))] public virtual A[] All { get { return new A[0]; } set { } } } public class B : A { public override A[] All { get { return new A[] { new A() }; } } } public class C : A { public override A[] All { get { return new A[0]; } } } public class A2 { private List<A2> m_List = new List<A2>(); [XmlArrayItem(typeof(A2))] [XmlArrayItem(typeof(B2))] [XmlArrayItem(typeof(C2))] [XmlArrayItem(typeof(D2))] public virtual List<A2> All { get { return m_List; } } } public class B2 : A2 { public override List<A2> All { get { return base.All; } } } public class C2 : A2 { public C2() { base.All.Add(new A2()); } public override List<A2> All { get { return base.All; } } } public class D2 : A2 { public D2() { base.All.Add(new A2()); } public override List<A2> All { get { return base.All; } } } class Program { static void Dump(A2 a) { XmlSerializer ser = new XmlSerializer(a.GetType(), new Type[] { typeof(B2), typeof(C2), typeof(D2) }); using (MemoryStream mem = new MemoryStream()) { ser.Serialize(mem, a); mem.Seek(0, SeekOrigin.Begin); using (StreamReader rdr = new StreamReader(mem)) Console.WriteLine(rdr.ReadToEnd()); } } static void Dump(A a) { XmlSerializer ser = new XmlSerializer(a.GetType(), new Type[] { typeof(B), typeof(C) }); using (MemoryStream mem = new MemoryStream()) { ser.Serialize(mem, a); mem.Seek(0, SeekOrigin.Begin); using (StreamReader rdr = new StreamReader(mem)) Console.WriteLine(rdr.ReadToEnd()); } } static void Main(string[] args) { Console.WriteLine("...."); Dump(new B()); Dump(new C()); Console.WriteLine("...."); Dump(new B2()); Dump(new C2()); Dump(new D2()); Console.ReadLine(); } } } Tag: Great new development community concept Tag: 131680
  - 23
    - ClickOnce Problem with .NET Framework Installation I have a C# application that I am distributing and updating via ClickOnce. I have the .NET Framework 2.0 as a prerequisite. On some computers, but not all, when the app is installed for the first time, and the Framework needs to be installed, the Framework installation piece will hang the user's computer. A reboot is normally required. What's odd about this is that the Framework has been installed successfully but the computer hangs up. Has anyone encountered this? Thanks very much. Tag: Great new development community concept Tag: 131679
  - 24
    - tcpclient in .net 2.0 Maybe someone has come across this situation and has a way to handle it. If I have a tcpClient object and do a GetStream.Read on it after setting a ReceiveTimeout, I'm getting different behavior in .Net 2.0 than in 1.0 when the method returns 0 bytes (which signifies a timeout). In both cases I get a System.IO.IOException , but in the 2.0 framework the socket also disconnects when this occurs (in 1.0 it did not disconnect). They have made some improvements in the tcpClient class, such as exposing the underlying socket, so I'd prefer to keep using tcpClients. Any idea how I can prevent this disconnect? Right now I'm checking DataAvailable and using Thread.Sleep as a workaround, but I'd prefer to do a blocking read call. Thanks, Keith Tag: Great new development community concept Tag: 131676
  - 25
    - ClickOnce Content Files I have a solution with multiple projects. One project is a windows forms project. I have report files (.rdlc) in a separate project that are built as "Content" with the "Copy Always" option. When I build the solution, these files are copied to the bin\Release directory, as they should be. However, when I publish the Windows Forms project, these content files are not copied. How can I make it so that these content files from the one project are published along with the windows forms project. They are not listed in the "Applications Files" section of the publish settings. Thank you... Tag: Great new development community concept Tag: 131675
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  - 1
    - Migrate large .NET 1.1 app to 2.0 or 3.0 (ie, when will SP's ship? We're trying to decide whether to migrate a large .NET 1.1 (ELB 1.1) app to .NET 2.0 or 3.0 (with ELB 3.1, probably)... within the next two months. I've seen discussions that hint that the (long overdue) SP1 for .NET 2.0 will ship around the time that Orcas ships (early '08?). We could probably tolerate that if we migrate the app to 2.0 now. On the other hand, if we migrate to 3.0 now, when will SP1 for .NET 3.0 ship? Since 3.0 is purportedly an extension to 2.0, and isn't supposed to have changed the "core" of 2.0, would we be able to apply 2.0 SP1 to 3.0? But if the 2.0 SP1 doesn't also apply to 3.0, and the 3.0 SP1 will be even later (1.5+ years, as the 2.0 SP has proven to be), then there's no way we could consider migrating to 3.0 now... DT Tag: Great new development community concept Tag: 131672
  - 2
    - Images in DataList Hi In GridView there is <asp:ImageField > is there something similar to display images in DataList, i need to display images stored in a Database TIA Barry Tag: Great new development community concept Tag: 131671
  - 3
    - Control.Invoke() blocking forever if form closed whilst background task running In part of the system I am working on I have a background task (started with a call to BeginInvoke() on a delegate), which at some point needs to read a property from one of the controls on a form. Normally this all works great. The problem I am having is if the user closes the form whilst the background task is running. Execution blocks indefinitely on the call to Control.Invoke() and the method I supply to it never begins. The application's message queue doesn't seem busy and the UI is still responsive other than I have this thread sitting in the background, stuck on this call. I am calling Invoke() on a custom UserControl that has not yet been disposed. The stack trace to where it is blocking inside Invoke() shows up as the following... [In a sleep, wait, or join] mscorlib.dll!System.Threading.WaitHandle.WaitOne(long timeout, bool exitContext) + 0x2e bytes mscorlib.dll!System.Threading.WaitHandle.WaitOne(int millisecondsTimeout, bool exitContext) + 0x23 bytes System.Windows.Forms.dll!System.Windows.Forms.Control.WaitForWaitHandle(System.Threading.WaitHandle waitHandle = {System.Threading.ManualResetEvent}) + 0xa1 bytes System.Windows.Forms.dll!System.Windows.Forms.Control.MarshaledInvoke(System.Windows.Forms.Control caller, System.Delegate method, object[] args, bool synchronous) + 0x36d bytes System.Windows.Forms.dll!System.Windows.Forms.Control.Invoke(System.Delegate method, object[] args) + 0x48 bytes System.Windows.Forms.dll!System.Windows.Forms.Control.Invoke(System.Delegate method) + 0x7 bytes I can get around the problem by replacing the Invoke() call with a BeginInvoke() and therefore being able to specify a timeout, but I'm curious as to why it's happening in the first place. Thanks Dave Tag: Great new development community concept Tag: 131670
  - 4
    - Windowsservice an Mapped Drive My service runs under a Domain Account mydomain\myuser. If I log into my system under this mydomain\myuser I have acces to a mapped drive x:\ which is mapped to \\mydomain\mymachine\myfolder. The service can acces \\mydomain\mymachine\myfolder but not x:\. A winform application which I start when logged in as mydomain\myuser has access to x. Any ideas? Mathias Fritsch Tag: Great new development community concept Tag: 131666
  - 5
    - Launching a "Fire and Forget" stored procedure Hello, I have an asp.net applicaiton and I woul like to add some logging features (not only for errors but even for user activities), my principal interest is to NOT decrease performance so I would like to launch some SQL Server 2005 stored procedures in a "Fire and Forget" way: the application launch the Stored Proc and continues without waiting ... Is it possible? How? Thanks! .:M.A:. Tag: Great new development community concept Tag: 131663
  - 6
    - "Enter network password" nuisance prompt... Any help would be much appreciated in the following problem. I subscibe to a european streaming TV website - while it worked flawlessly for months, all of a sudden this message began to pop up! Login still works, but the player freezes at the connecting to media stage, while waiting for the network password. All other internet functions work normally, and I don't have a network. Thank you Tag: Great new development community concept Tag: 131660
  - 7
    - Copy DataTable Rows Fast? .NET Framework 2.0 I have a custom class inherits from DataTable. It has a method to "get remote stuff" where it makes a web service call to a .NET 2.0 web service that executes a TableAdapter. Now I need to just get the data columns and rows from the TableAdapter into my lightweight class. I think I want to do something like RemoteTA.Call( param1 ).Rows.CopyTo My DataTable does not have any columns or rows to start. Thanks. Tag: Great new development community concept Tag: 131656
  - 8
    - .NET 3.0 and IIS 6.0 on Windows Server 2003 SP2 Sorry if this is the wrong place to post... did a quick search and couldn't find a better location I installed .NET 3.0 on my Windows Server 2003 SP2 (x64) running IIS 6.0. Now I get a simple "Service Unavalable". I saw a post that said to use IIS 5.0 isolation mode. This basically prevented my default web site from starting up. Does anyone know if this is even possible? Thanks for your help! Tag: Great new development community concept Tag: 131652
  - 9
    - .NET BroadcastEventWindow 2.0 Problem on log out I am having problems with our client based part of our .net 2.0 distributed application. We find that when a user logs out of the system they are having problems. A window appears all the time when they log out, it says .NET-BroadcastEventWindow 2.0.0. I have googled this and can find no really good explanation for what it is or what would cause it. I don't know whether this is a problem with .NET 2.0 or our client apps. I was wondering if it was to do with threading or memory problems of some kind. When our client tools finish their work they basically go to sleep, thread.sleep for a specified time period. Would this cause the window to appear, that they thread is not being dealt with properly. I tried using SessionEndingEventArgs to cancel everything but that has no effect. Anyone any ideas? Thanks Eamonn Tag: Great new development community concept Tag: 131649
  - 10
    - Why is ref needed here? When I pass my List<> without the ref keyword persons2 is empty (Count = 0 below). If I add the ref keyword to the caller and the function then Count is correct. I don't understand because if I call DeSerialize(persons2, path) don't I by default send a reference not the actual List<Person> since List is an object? Thank you! //The below works since I have the ref keyword... class Program { private const string path = @"c:\temp\Serialization.xml"; static void Main(string[] args) { List<Person> persons = new List<Person>(); persons.Add(new Person("Person", "One")); persons.Add(new Person("Person", "Two")); Serialize(persons, path); List<Person> persons2 = new List<Person>(); DeSerialize(ref persons2, path); Console.WriteLine(persons2.Count.ToString()); Console.ReadLine(); } static void DeSerialize(ref List<Person> o, string path) { XmlSerializer serializer = new XmlSerializer(typeof(List<Person>)); StreamReader xmltext = new StreamReader(path, true); o = (List<Person>)serializer.Deserialize(xmltext); xmltext.Close(); } } Tag: Great new development community concept Tag: 131645
  - 11
    - Font problem in reports when the font doesn't exist We have created many reports using the Arial Unicode MS font with Crystal Reports. All was good until we tried them on systems that don't have that font installed. The reports are showed, somehow, but an error message will pop up for every piece of text using that font -it says the font is not installed or something like that. Here's an example, if the report is showing 10 fields per record, and there are 3000 records, then the error message will pop up 30000 times. Not nice. It was not a problem when we were using VS2003, but it became a problem when we converted the project to VS2005. Maybe it's a conversion issue? We are not sure how to deal with this. Should we embed the fonts in case they are not installed? Should we use another set of standard fonts? Thanks! Paul Tag: Great new development community concept Tag: 131644
  - 12
    - why no dead lock for this one? Hello, I did this as a test code: public class test{ .... .... public void test(int i) { lock(this) { if (i>10) { i--; test(i); } } } } I thought that when I run test(11), it should give me a deadlock as first it asks to lock the instance of the class, then as i is bigger than 10, it will go deeper and try to lock the instance of the class again, as it has been locked, then it should just wait there for ever. But it went through without any deadlock, can someone tell me what is wrong with my understanding? Many Thanks Jerry Tag: Great new development community concept Tag: 131642
  - 13
    - How to Serialize a List<> I want to serialize a List<>. When I do I get an entry for each object in the list but not the object's state. My code: //Person is a simple class that has fields for first and last name List<Person> persons = new List<Person>(); XmlSerializer serializer = new XmlSerializer(typeof(List<Person>)); persons.Add(new Person("Joe", "Tester")); persons.Add(new Person("Mary", "Tetser")); serializer.Serialize(Console.Out, persons); And I get... <?xml version="1.0" encoding="IBM437"?> <ArrayOfPerson xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd=" http://www.w3.org/2001/XMLSchema"> <Person /> <Person /> </ArrayOfPerson> Thank you for any help! Tag: Great new development community concept Tag: 131640
  - 14
    - xml / xsl problem Hi I have a xml file with about 20 records and a xsl file to display the records, out of 20 only 1 record is being displayed, is there some way to debug and find out why the other records are not being displayed. TIA Barry Tag: Great new development community concept Tag: 131638
  - 15
    - Copy/transfer Outlook Express mails from old computer to Windows M I am looking for the definitvie idiots guide on how I can copy all my emails from my old computer running Outlook Express to my new computer running Windows Mail. I am not an 'techy' person so an easy to understand set of instructions would be really appreciated! Thanks to all that read and hopefully respond! Tag: Great new development community concept Tag: 131633
  - 16
    - Thread Synchronization with ManualResetEvent Hi Everybody, I have some understanding problems, about (thread) synchronization. Hopefully somebody can explain it to me. I have the following two processes that use the same piece of hardware. However, they are not allowed to use it at the same time: Process 1: System.Threading.Thread Process 2: System.Timers.Timer elapsed event I have taken two approaches to synchronize the access of these two processes to the piece of hardware: 1. With Monitor.Enter(this) and Monitor.Exit(this) in a try-finally block of the hardware code 2. With ManualResetEvent WaitOne(), Reset() and Set() also in a try- finally block. Both these methods could not prevent the hardware from getting called twice. My own theories why this doesn't work are: 1. Monitor synchronizes different Threads, but an elapsed event runs on the same thread? 2. Two threads can both call WaitOne() at the same time, before one of them had the chance to call Reset(). They will both then pass WaitOne(), because the ManualResetEvent is for both still in the signaled state. ' I have written some test code to test situation 2 and indeed there seems to be a possibility of no synchronization. I have posted the code below. Can anybody explain me why this happens, and how I can get a synchronization for this? Kind regards, Gerben Heinen ### CODE ### using System; using System.Threading; namespace ConsoleApplication3 { /// <summary> /// Summary description for Class1. /// </summary> class Class1 { public Class1(){} /// <summary> /// The main entry point for the application. /// </summary> [STAThread] static void Main(string[] args) { Class1 c = new Class1(); c.Start(); } private Thread thread1,thread2,thread3; private ManualResetEvent mre = new ManualResetEvent(true); private volatile int cntr = 0; private Random random = new Random(); public void Start() { thread1 = new Thread(new ThreadStart(worker1)); thread2 = new Thread(new ThreadStart(worker2)); thread3 = new Thread(new ThreadStart(worker3)); thread1.Start(); thread2.Start(); thread3.Start(); } private void worker1() { while(true) { try { Thread.Sleep(random.Next(100,1000)); mre.WaitOne(); mre.Reset(); // Console.WriteLine("worker1 started"); cntr++; Thread.Sleep(random.Next(100,1000)); cntr--; } finally { mre.Set(); } } } private void worker2() { while(true) { try { Thread.Sleep(random.Next(100,1000)); mre.WaitOne(); mre.Reset(); // Console.WriteLine("worker2 started"); cntr++; Thread.Sleep(random.Next(100,1000)); cntr--; } finally { mre.Set(); } } } private void worker3() { while(true) { if(cntr==2) System.Console.WriteLine("Cntr equals 2"); Thread.Sleep(10); } } } } ####### Tag: Great new development community concept Tag: 131629
  - 17
    - WCF on Windows 2000 Hello, I need to run a little WCF service host (1 service) on a Windows 2000 based PC. I'm using the net.tcp channel and no metadata nor other webservices stuff. It runs perfect on my WinXP development machine, but I don't know if it will run on W2K. Any experiencies there about a similar scenario? Thanks, NSA Tag: Great new development community concept Tag: 131624
  - 18
    - Dynamic creation of textbox in asp.net Hi I have an query.I write a code to create a textdox dynamically in ASP.NET by using C#.net.But I got a server exception error.Pls send the code for this one Tag: Great new development community concept Tag: 131622
  - 19
    - Performance Counter Next Value always returns zero (MS Exchange counter) Hi, I've got an application that users the PerformanceCounter class to retrieve perfmon values. Generally this works fine, but it seems the following counter always returns 0 for the nextvalue: MSExchange Intelligent Message Filter % UCE out of Total Messages Scanned _Total There is a raw value, and if I manually divide that by the value returned from the Total Messages Scanned, it shows the same % as in perfmon. .NET always returns 0 however. I am aware of an MS bug in article 324548 showing that disk values return 0, but is this the same problem with just different counters? Regards Bobby Tag: Great new development community concept Tag: 131620
  - 20
    - question about localization and multi threading Hello, Suppose I have a windows form running in culture A, then the form creates a new thread (call a method foo for example) and makes it using culture B. When method foo is running in the new thread, it may try to change a label in the form. So code is like: foo() { string message = resMan.GetString("strLabel"); if (label2.InvokeRequired) label2.Invoke(new MethodInvoker(foo)); else label2.Text = message; } The problem is that it will never show the label as culture B as foo finally goes to the thread the windows form is running (culture A). So what is the best way to handle it? The real code was written without consideration of localizaton but now requirement is added to support multi cultures. Many Thanks Jerry Tag: Great new development community concept Tag: 131614
  - 21
    - Orcas, web apps and .net 3.x Ive been reading a few articles on .net 3.0, xaml and how web app development will change. Seems that building XAML based apps will let you deploy to either a desktop app or to a browser. I also remember reading about plans to ensure cross browser support, arent these addons ? Tag: Great new development community concept Tag: 131605
  - 22
    - System.Diagnostics.StackTrace future ? The constructor new System.Diagnostics.StackTrace(System.Threading.Thread targetThread, bool getSourceInformation) *requires* that the target thread be suspended. But System.Threading.Thread.Suspend (and .Resume) are currently labelled Obsolete and the documentation states that they are scheduled to be removed in a future version. What is planned to avoid the upcoming uselessness of this StackTrace ctor? Our suggestion would be another signature for the StackTrace constructor which takes a boolean flag indicating that you want the stack trace even if the thread is not suspended (implemented however they want, maybe by suspending the thread internally). All you are assured is that the returned stack trace was a true stack trace for the target thread *sometime* during the StackTrace ctor call. We are using this feature to perform statistical execution profiling of a thread from within the application itself (using another thread of course). Tag: Great new development community concept Tag: 131603
  - 23
    - attach to process not started in debug mode? Is there a way to attach to a process of a .NET app not started in debug mode? I'm having a problem with an app on a remote server, with a 3rd party .net object I dont' have source files for anyway. I'd like to be able to just attach to the hung process and get some debug info. Is this possible? -- Thanks in advance, Les Caudle Tag: Great new development community concept Tag: 131596
  - 24
    - That assembly does not allow partially trusted callers. VS2005 app cannot access a call to an ODBC conection. I get a security warning" That assembly does not allow partially trusted callers." I have a strong name for the project set in the project. What do I have to do to allow this application to be called from a file server instead of the local drive. Is there a way to set the data tier's dll to the local drive? If so how do I set up the base project to not look for that dll in the bin directory? TIA __Stephen Tag: Great new development community concept Tag: 131590
  - 25
    - Open URL in another Window Hi Response.Redirect(http://www.yahoo.com); would open the above in the same window, what is the method to open the url in a new Window. TIA Barry Tag: Great new development community concept Tag: 131587

I found this new site I am excited about http://www.spikesolutions.net.
The concept, zip up your programming solutions and submit them to this
site for free. Each time someone downloads your solution you get
$1.00. The creators of the site are trying to improve the quality and
availability of "spike solutions" by rewarding developers with cash
for submitting their solutions. I would like to hear your thoughts.

Re: Great new development community concept by Peter

Peter
Mon Jul 09 20:23:19 CDT 2007

On Mon, 09 Jul 2007 18:11:42 -0700, <codezilla94@gmail.com> wrote:

> [...] I would like to hear your thoughts.

Do you mean other than my suspicion that you are in fact somehow related
to the web site, and didn't just "find" it?

Re: Great new development community concept by Paul

Paul
Tue Jul 10 01:41:58 CDT 2007

>> [...] I would like to hear your thoughts.

Great business model!! Upload 10+ blank solutions, get 10+ of your friends
to download them and go down the pub and enjoy the proceeds!

"Peter Duniho" <NpOeStPeAdM@nnowslpianmk.com> wrote in message
news:op.tu7545b58jd0ej@petes-computer.local...
> On Mon, 09 Jul 2007 18:11:42 -0700, <codezilla94@gmail.com> wrote:
>
>> [...] I would like to hear your thoughts.
>
> Do you mean other than my suspicion that you are in fact somehow related
> to the web site, and didn't just "find" it?

Re: Great new development community concept by codezilla94

codezilla94
Tue Jul 10 12:19:29 CDT 2007

On Jul 10, 1:41 am, "Paul Hadfield" <non...@noone.com> wrote:
> >> [...] I would like to hear your thoughts.
>
> Great business model!! Upload 10+ blank solutions, get 10+ of your friends
> to download them and go down the pub and enjoy the proceeds!
>
> "Peter Duniho" <NpOeStPe...@nnowslpianmk.com> wrote in message
>
> news:op.tu7545b58jd0ej@petes-computer.local...
>
>
>
> > On Mon, 09 Jul 2007 18:11:42 -0700, <codezill...@gmail.com> wrote:
>
> >> [...] I would like to hear your thoughts.
>
> > Do you mean other than my suspicion that you are in fact somehow related
> > to the web site, and didn't just "find" it?- Hide quoted text -
>
> - Show quoted text -

Of course the quality of the solutions are monitored.