I met with an accident recently riding my motorcycle and hence was unable to blog for some time. Here is my post after a brief break. I wanted to create a generic list of my class in power shell. It was an interesting experience. Here is what I...

I found this blog post from Shawn Burke to be very useful. Comes in handy if you have to step through .NET source when debugging. http://blogs.msdn.com/sburke/archive/2008/01/16/configuring-visual-studio-to-debug-net-framework-source-code.aspx Another...

I was debugging some issue related to asynchronous delegates and wanted to share that information with everyone. When you do a BeginInvoke the delegate is invoked on a thread from the thread pool and on completion the callback is also called on...

This was another interesting issue I encountered recently. The error presented itself as an event log entry from our logging as below: Unhandled Exception: System.Data.DataException: <target>.Column2 and <source>.Column2 have conflicting...

I ran into this problem recently when debugging some native code and thought that it will be good to share this with everyone . CString sampleString = CString(_T( "Sample\0String" ), 14); int len = sampleString.GetLength(); // len is 14 CString...

using System; class Program { static void Main( string [] args) { Program p = new Program(); p.ExceptionSample(); } private void ExceptionSample() { int i=0; while (i < 100) { if (i == 60) { try {...

I took the sample from my previous post and wanted to use LINQ to query the XML. You can pretty much use the power of SQL on the document object to richly query for things you are looking for. using System; using System.Linq; using System...

I want to talk about Xml Serialization this month. One of the work I was involved in recently required generation of XML and a I came across this wonderful technology which helps you generate and consume XML seamlessly. If you are generating XML...

I wanted to write a small sample to illustrate events and delegates. Here is a compact sample that illustrates it. using System; public class EventSample { public delegate void EventHandler (); public event EventHandler myeh; public...

When we have C# code interacting with the data base you run into this problem. Let me try and explain it. The database has nullable columns and C# has nullable types. For example, let us take a table Employee which has Id (int), name (string) and age...

. NET exposes an elegant diagnostics model that can be used by applications. It is a bit confusing to start with. There are a few listeners that exist in the Diagnostics namespace. Some of them are 1. TextWriterTraceListener 2. DefaultTraceListener...

To continue on the exception post from last week I did a bit more research and learnt some more. I thought that I will share that with everyone. We had some interesting conversations in our team about exception handling and the following thought came...

There are four ways to throw an exception in my opinion. They are: 1. Throw a new exception a. throw new ArgumentException( … ); 2. Throw the exception you caught a. throw e; 3. Throw the same exception preserving the stack a. throw;...

I wrote about Deny and Assert in my previous blog post. In my repeated attempts to get the previous sample working for LinkDemand, I discovered that Deny and PermitOnly are not effective against LinkDemand. The code worked all the time and I was wondering...

I wanted to talk about Code Access Security this time. Code Access Security is a big in itself. In this post I wanted to talk about Declarative Security. Declarative security uses attributes to place security information on assemblies, classes and methods...

I wanted to write about delegates this month. There are different ways in which you can invoke delegates to get either a synchronous or an asynchronous behavior. But from what I noticed, the delegate model provides you very less control when you invoke...

I was cutting and pasting from word till now to post. It was long in my list to try and use word and see how that works and it works great. Column1 Column2 Column3 Row2 Row2 Row2   I look forward to using this.

Generic argument is not allowed in the constructor. When I compile the code below I get a compilation error saying: error CS1519: Invalid token '(' in class, struct, or interface member declaration The reason is simple. You can have a class...

I was writing a sample to do something and I noticed that when I declare and instantiate a generic class, I had to pass the generic type in two places: 1. Foo<Int32> fooGenericInstance; 2. FooGenericInstance = new Foo<Int32>(); ...

After almost two years with the CLR team I have decided to move on and take new challenges. I have joined the Exchange Hosted Services team as a Development Lead starting today. I will continue to blog about what I understand and know about the CLR. I...

I wrote my second article in MSDN which got published in the September issue. This article is about " COM Connection Points ". It gives an overview of COM connection points and explains how to use the same managed code. You can find the article here ...

I tried writing a sample to use managed C++ to interact with managed code and here is my learning. I created the following managed C++ code to wrap existing FLAT API’s in a class that can be called form C#. Managed C++ code: #using <mscorlib...

Let us look at a small sample that illustrated how this configuration entry works. using System; class Sample { public static void Main() { Console .WriteLine( "This is a sample" ); } } Let us copy this code to RequireRuntime...

Fusion log comes in very handy when you want to understand or debug binding behaviors. Let us take the sample code below. Copy the code to DomSample.cs and compile it. Let us assume for now that the code tries to load some arbitrary assembly “Foo” which...

I came across this issue yesterday and thought that I will blog about the same. The example below demonstrates a simple PInvoke and Reverse PInvoke through delegates. The initial call was defined to use the __cdecl convention. As you can notice when executing...