How to put an extended WinForms Control on ToolBox

Question

I plan to add functionalities to TextBox with the following:

   public class TextBoxExt : TextBox  
    {
        protected override void OnKeyPress(KeyPress         


        

Answer 1

You need to add a constructor to your derived class.

public class TextBoxExt : TextBox      
{        
    public TextBoxExt()
    {
    }

    protected override void OnKeyPress(KeyPressEventArgs e)        
    {            
         base.OnKeyPress(e);        
    }    
}