.net-3.5

问题 How to access stack frame information while debugging ASP.net program? 回答1: If you're referring the "Call Stack" window, you can view that when debugging by opening the Call Stack Window using either it's default hotkey of CTRL+ALT+C , or by using the IDE menu of Debug / Windows / Call Stack Alternatively, if you're referring to ASP.NET's built-in Tracing capability, whereby the ASP.NET runtime will display diagnostic information about a single request for an ASP.NET page, you can achieve

问题 With the advent of new features like lambda expressions (inline code), does it mean we dont have to use delegates or anonymous methods anymore? In almost all the samples I have seen, it is for rewriting using the new syntax. Any place where we still have to use delegates and lambda expressions won't work? 回答1: Yes there are places where directly using anonymous delegates and lambda expressions won't work. If a method takes an untyped Delegate then the compiler doesn't know what to resolve the

问题 Quick WPF question - on Win 7 (and I assume Vista) in WPF, the default progress bar does a nice little glowing "whoosh"-y animation. I'm showing progress of about 48 things on one screen, and it's a tad overwhelming to have all of these things whooshing on you - can you disable just these animations without affecting the rest of the default animations in the application? 回答1: I'd agree with Matthew's comment, but anyway, your answer is to apply a custom style without the animation. Here's the

问题 I need to programatically determine whether .NET 3.5 is installed. I thought it would be easy: <% Response.Write(Environment.Version.ToString()); %> Which returns "2.0.50727.1434" so no such luck... In my research I have that there are some rather obscure registry keys I can look at but I'm not sure if that is the route to go. Does anyone have any suggestions? 回答1: You could try: static bool HasNet35() { try { AppDomain.CurrentDomain.Load( "System.Core, Version=3.5.0.0, Culture=neutral,

问题 I have ASMX services for my web application that I would only like available to the same application. Is there a way for the web service to only be accessible by the same application, such as relative/absolute path restrictions? 回答1: The easiest route would be to just not use a web service. If you're calling from the same application, you can probably just pull your logic into a separate class, and call it directly in your code, not via web service. 回答2: Two ways to do this: Have the web

问题 I'm developing an application that uses a mobile device to take a photo and send it using a webservice. But after I've taken 4 photos I am getting an OutOfMemoryException in the code below. I tried calling GC.Collect() but it didn't help either. Maybe someone here could be give me an advice how to handle this problem. public static Bitmap TakePicture() { var dialog = new CameraCaptureDialog { Resolution = new Size(1600, 1200), StillQuality = CameraCaptureStillQuality.Default }; dialog

问题 Having a class that has a method, like this: class Window { public void Display(Button button) { // ... } } is it possible to overload the method with another one that is more broad, like this: class WindowExtensions { public void Display(this Window window, object o) { Button button = BlahBlah(o); window.Display(button); } } What happened when I tried is that I have infinite recursion. Is there a way to make that work? I want the extension method to be called only when the other method can't

问题 I am using outloook 2003 and visual studio 2008. i want to develop an application that will send the email to any domain. but my code fails when i'm trying to send email to gmail, hotmail etc. actually all the messages is stored in C:\Inetpub\mailroot\Queue directory. Please help me how i send the email to gmail, hotmail a/c. Thanks in Advance Code is System.Net.Mail.MailMessage message = new System.Net.Mail.MailMessage(); message.To.Add("sumitdawar@hotmail.com"); message.To.Add("sumitdawar

问题 I have following test program char c = '§'; Debug.WriteLine("c: " + (int)c); byte b = Encoding.GetEncoding(437).GetBytes("§")[0]; Debug.WriteLine("b: " + b); char c1 = Encoding.GetEncoding(437).GetString(new byte[] { 21 })[0]; Debug.WriteLine("c1: " + (int)c1); This produces following result: c: 167 b: 21 c1: 21 As I can see here GetBytes is working correctly 167 in unicode => 21 in CP437 but GetString is not working 21 in CP437 => 21 in unicode Is this a bug or my mistake? 回答1: CP437 is not

问题 There is a built in function from the Microsoft.VisualBasic assembly. I can use it in VB like this: Financial.Pmt((dAPR / 100) / 12, iNumberOfPayments, dLoanAmount) * -1 My current project is in C# and I need to use this function. Answers on the web say just add the namespace and assembly and use the same in C#- but this is not true! C# still does not recognize this formula. So how can I use use Financial.Pmt in C# (or perhaps even porting the source code to it)? Thanks for any help. 回答1: