C# Edit and Continue: error 4066

Updating the 'this' or 'base' call of a constructor will prevent the debug session from continuing while Edit and Continue is enabled

This error occurs when you have a base or this call after the constructor declaration. Consider the following example:

class Program

{

public Program()

: this(10)

{

}

public Program(int a) { }

static void Main()

{

}

If you step into the application, then try to change this(10) to this(20), error 4066 occurs.

To correct this error

On the Edit menu, click Undo to undo the changes

-or-

On the Debug menu, click Stop Debugging, then make the changes and start a new debugging session.