hello. Here's my problem : I'm developing a windows application in C# and i have a form1.cs and a user control (user.cs) and i have a Strip Menu in my form1 with several opctions, and i want to when i select an option of the menu in the form1 that it "opens" me the user control... An example : I have a Strip Menu with 2 options (Day and Night) and when i click with the mouse in the option day, it will open the user control for that option, day.cs for example... I dont know how to do it.... Can anyone help me? Thank you