I thought I would throw out for the archvies what the solution to my problem was. You guys will love this one.
Don't put your project in a directory tree containing the # sign. (ie C#) and you can add a control no problem in the same project and it works great. Jeff ----- Original Message ----- From: "Jeff Smith" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Saturday, April 20, 2002 10:49 AM Subject: [DOTNET] Problems creating a basic extended usercontrol > I am trying to create a basic textbox control similar to the Masked Edit > Control that was in VB. I create a new c# windows application, add a new > user control called "TestUserControl" and then I go into the code and > change it to inherit from System.Windows.Forms.TextBox instead of > UserControl. > > It is in my toolbox automatically, but when I drop it on the form I > get "The control ... could not be loaded. Ensure the library containing the > control has been built and a project reference has been made to the library > containing the control. If you have changed the name of the user control, > close and re-open the control's designer to update the toolbox item". > > I have not changed the name (just the base class), I have compiled the > project before trying to drop it on the form with the form designer. I have > even tried going to "customize toolbox" and adding a reference to my > own .EXE file and then I get an additional "TestUserControl" entry in the > toolbox that when I drop on the form gives me an error of "Object reference > not set to an instance of an object". > > What the F$#!@ am I doing wrong? This should be so simple. I have checked > all over the net. The only suggestions I saw were compiling and adding a > reference to your EXE. > > Thanks, > Jeff > > You can read messages from the DOTNET archive, unsubscribe from DOTNET, or > subscribe to other DevelopMentor lists at http://discuss.develop.com. You can read messages from the DOTNET archive, unsubscribe from DOTNET, or subscribe to other DevelopMentor lists at http://discuss.develop.com.
