C# Edit and Continue: error 4059
Error Message
Modifying a '[method | property | indexer | operator | event | accessor | constructor | destructor]' containing an active statement in compiler generated code will prevent the debug session from continuing while Edit and Continue is enabled
You tried to modify a method, property, indexer, operator, event, accessor, constructor, or destructor containing an active statement in compiler-generated code. Edit and Continue does not support this change during debugging.
Consider the following code:
class Disposable: System.IDisposable
{
public void Dispose()
{
}
}
class Program
{
static void Main(string[] args)
{
int a = 10;
using (Disposable dipose = new Disposable())
{
}
}
}
If you set a breakpoint in the dispose method, then start to debug the application and try to change int a = 10 to int a = 20, 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
Supported Code Changes (C#)
Edit and Continue (Visual C#)