C# Edit and Continue: error 4065
Constructor cannot be modified while debugging because field <field name> has an initializer using an anonymous method
You tried to modify a constructor that contains a field initialized by an anonymous method. Edit and Continue does not support this change during debugging.
Consider the following code:
class Example
{
private System.EventHandler Click = delegate
{ System.Console.WriteLine("Hello"); };
public Example()
{
}
static void Main(string[] args)
{
}
}
If you step into the application, then try to add int a = 10 in the constructor, this error 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.
See Also
Reference
Anonymous Methods (C# Programming Guide)