.net-2.0

Get filtered data from dataset to datatable

 ̄綄美尐妖づ 提交于 2019-12-04 07:09:40
How can I filter data from dataset to datatable? like the code-> DataRow[] dr = DS.Tables[0] .Select("STAGENAME='Develop' AND DEVLAPSEDAYS IS NOT NULL"); How can I use datatable here? following code doesn`t reflect changes-> DataTable FilteredDataD = DS.Tables[0]; if (FilteredDataD.Rows.Count > 0) { FilteredDataD.DefaultView.RowFilter = "STAGENAME='Develop' AND DEVLAPSEDAYS IS NOT NULL"; FilteredDataD.DefaultView.ToTable(); } Is is possible to remove a column using above filter,like "STAGENAME='Develop' AND DEVLAPSEDAYS IS NOT NULL" + FilteredDataD.column("col_name")... Suppose I have 5

What is the best way to sort an IList<T> in .Net 2.0?

落爺英雄遲暮 提交于 2019-12-04 07:04:02
I have an IList<T> that I need to sort, and I would rather not copy the list if possible. I've noticed that ArrayList has an Adapter static method that wraps the passed list without copying it, but this takes an IList and I have an IList<T> . Is it safe to cast from a System.Collections.Generic.IList<T> to a System.Collections.IList and just use the Adapter method? Note that this is .Net 2.0, so LINQ is not an option. From the blog of Paul Fox, I recommend the post "How to sort an IList": http://foxsys.blogspot.com/2007/06/how-to-sort-generic-ilist.html Just in case that blog goes away in the

Request.UrlReferrer is NULL for HTTPS

喜夏-厌秋 提交于 2019-12-04 06:26:43
I am using "Request.UrlReferrer.AbsoluteUri" in my project to get the URL where my application is hosted. I am able to get the URL, if I am redirected from "http" host, but I am getting null, if I am redirected from "https" host. how can I get "UrlReferrer AbsoluteUri" of both "http and https"? Check the actual http data using a https-aware inspector like fiddler. Many browsers simply don't send the referrer when communicating over https, in which case there is simply no way to get it . If you own the origin site, you could add something into the query-string as a substitute, but that's about

How can I prevent unauthorized code from accessing my assembly in .NET 2.0?

六眼飞鱼酱① 提交于 2019-12-04 06:17:57
In .NET 1.x, you could use the StrongNameIdentityPermissionAttribute on your assembly to ensure that only code signed by you could access your assembly. According to the MSDN documentation, In the .NET Framework version 2.0 and later, demands for identity permissions are ineffective if the calling assembly has full trust. This means that any application with full trust can just bypass my security demands. How can I prevent unauthorized code from accessing my assembly in .NET 2.0? As per Eric's suggestion, I solved it by checking the key myself. In the code I want to protect, I add the

calling new SqlConnection() hangs program

家住魔仙堡 提交于 2019-12-04 06:17:08
This one has me stumped. I'm not even trying to connect to a database. When this code gets to the line where I instantiate a new SqlConnection object, it just hangs there, not throwing an exception or anything. I've tried compiling it for 2.0. 3.5 and 4.0, and they all hang. Of course it works on my machine and yours, too. But I'm trying to run this code on a Windows Server 2008 x64 server, and it won't budge. // example.cs using System; using System.Data; using System.Data.SqlClient; public class MainClass { public static void Main(string[] args) { Console.WriteLine("start"); SqlConnection

In IL code, why is there not a nop opcode in a given situation? Why is there a br.s opcode in a given situation?

不羁岁月 提交于 2019-12-04 05:07:57
Suppose I have the following code: public class Class1 { private Class2 obj; public void MethodA() { var class2 = new Class2(); class2.PropertyI = 2; obj = MethodB(class2); } public Class2 MethodB(Class2 class2) { return class2; } } public class Class2 { public int PropertyI { get; set; } } The generated IL code from compiling with Visual Studio 2010 as a .NET 2.0 assembly is the following: .method public hidebysig instance void MethodA() cil managed { .maxstack 3 .locals init ( [0] class ClassLibrary1.Class2 class2) L_0000: nop L_0001: newobj instance void ClassLibrary1.Class2::.ctor() L_0006

GUI does not redraw while stepping in Debug Mode

感情迁移 提交于 2019-12-04 04:47:51
问题 In any .NET 2.0 Winforms application, if you run the code in Debug Mode, and you either hit a breakpoint or otherwise Step Into the code line by line, and you want to see the GUI of the application being debugged, then .NET does not draw the application screen. For example, I have an application which writes some messages to a TextBox on a Form. When I debug the code step by step, or when a breakpoint is hit, I want to see what all messages are logged in the TextBox, but if I press Alt-Tab to

Removing obsolete WebProxy.GetDefaultProxy() references

限于喜欢 提交于 2019-12-04 04:29:42
问题 I have a bit of code which is annoying me because it is generating obsolete warnings, but I am wary of removing it because: a) It works b) I didn't write it c) I don't currently have a means of testing it. (ie I don't have access to a machine where it is required) The code is as follows System.Net.WebProxy proxyObject = System.Net.WebProxy.GetDefaultProxy(); proxyObject.Credentials = System.Net.CredentialCache.DefaultCredentials; proxyObject.BypassProxyOnLocal = true; System.Net

Fade splash screen in and out

不羁的心 提交于 2019-12-04 04:02:09
问题 In a C# windows forms application. I have a splash screen with some multi-threaded processes happening in the background. What I would like to do is when I display the splash screen initially, I would like to have it appear to "fade in". And then, once all the processes finish, I would like it to appear as though the splash screen is "fading out". I'm using C# and .NET 2.0. Thanks. 回答1: You could use a timer to modify the Form.Opacity level. 回答2: When using Opacity property have to remember

Render Translucent/Transparent Overlay

馋奶兔 提交于 2019-12-04 03:25:52
I need a fast way to draw an overlay on a screen with transparency support. I've done a lot of searching and found one potential solution (which has its own problems) and another solution that does not fit my requirements; specifically transparency support. I'll start with the latter and then touch on the former. Solution 1 Using a borderless form with a TransparencyKey, this is one of the most recommended solutions I've found and the least helpful. This solution works by having a new Form, have it borderless, set the background to something like Colour.White and set the TransparencyKey to the