How do I allow breaking on 'System.NullReferenceException' in VS2010?

c# debugging visual-studio-2010 nullreferenceexception break
Mike Webb picture Mike Webb · Dec 17, 2010 · Viewed 16.3k times · Source

I have a VS 2010 C# .NET 4 project. The issue is that the program is not breaking on 'NullReferenceException' errors during debugging.

The output window will display the following:

A first chance exception of type 'System.NullReferenceException' occurred in myProgram.exe

...but the debugger will just exit out of the function and continue running the rest of the program.

How do I change this behavior so that the debugger will break on these exceptions?

Answer

Femaref picture Femaref · Dec 17, 2010

Go to Debug -> Exceptions -> Search for NullReferenceException and check the "thrown" checkbox.

Related questions

Writing to output window of Visual Studio

I am trying to write a message to the output window for debugging purposes. I searched for a function like Java's system.out.println(""). I tried Debug.Write, Console.Write, and Trace.Write. It does not give an error, but …

Read More
Debugging doesn't start

When I hit F5 (debugging mode) nothing happens. Building works correctly, exe file I can launch properly, but can't start debug. Why?

Read More
Cannot obtain value of local or argument as it is not available at this instruction pointer, possibly because it has been optimized away

Visual Studio 2010 kills (there is no other word) data in one of the arguments of the function in the unsafe block. What could cause this error? The following message shows by the debugger. Cannot obtain value of local or argument …

Read More