Exception

Question

Hi I am getting Delegates must be of the same type. Exception in C# windows application. I am using .net 2.0. I searched in google but I couldn't get correct solution. please help me..

srinath · Answer

Thank you for responding. I am trying to do a numberpad which is useful for both calculator and mobile phone using delegates and events. I wrote this code in user control. public delegate void NumberArgumentHandle ( object sender NumberArgs args); public delegate void MathOperationHandler ( object sender Math m); public delegate void AssignmentHandler ( object sender Assign a); public delegate void CharacterArgumentHandler ( object sender Char cargs); public delegate void CancelArgumentHandler ( object sender Cancel c); public object key = new object (); double f; double y; string z; double x = double .MaxValue; //double o = double.MaxValue; public event NumberArgumentHandle NumberSelected { add { Events.AddHandler(key value ); } remove { Events.RemoveHandler(key value ); } } public event MathOperationHandler Operators { add { Events.AddHandler(key value ); } remove { Events.RemoveHandler(key value ); } } public event CharacterArgumentHandler Character { add { Events.AddHandler(key value ); } remove { Events.RemoveHandler(key value ); } } public event AssignmentHandler Assignment { add { Events.AddHandler(key value ); } remove { Events.RemoveHandler(key value ); } } public event CancelArgumentHandler Cancelop { add { Events.AddHandler(key value ); } remove { Events.RemoveHandler(key value ); } } and in Windows Application - form1.cs I have void userControl11_NumberSelected( object sender NumberPad. NumberArgs args) { args.Number.ToString(); } void usercontrol11_Assignment( object sender NumberPad. Assign a) { a.Assign1.ToString(); } void usercontrol11_Cancelop( object sender NumberPad. Cancel c) { c.Char1.ToString(); } void usercontrol11_Character( object sender NumberPad. Char cargs) { cargs.Char2.ToString(); } void usercontrol11_Operators( object sender NumberPad. Math m) { m.Number1.ToString(); } and in form1.designer.cs I have this .userControl11.NumberSelected += new NumberPad. UserControl1 . NumberArgumentHandle ( this .userControl11_NumberSelected); this .userControl11.Assignment += new NumberPad. UserControl1 . AssignmentHandler ( this .usercontrol11_Assignment); this .userControl11.Cancelop += new NumberPad. UserControl1 . CancelArgumentHandler ( this .usercontrol11_Cancelop); this .userControl11.Character += new NumberPad. UserControl1 . CharacterArgumentHandler ( this .usercontrol11_Character); this .userControl11.Operators += new NumberPad. UserControl1 . MathOperationHandler ( this .usercontrol11_Operators); Actually I am writing a code in usercontrol and calling Usercontrol in form1. At runtime I am getting a System.Argument exception with message Delegates must be of the same type. near events.addhandler(keyvalue) for the event AssignmentHandler. Please help me..

Roei Bar · Answer

not enough information please send more data regarding the delegates used and the exception StackTrace