User Control Constructor With Patameter

[LukasMalik]

Hi all,

.NET 3.5, WinForm app, C#, Visual Studio 2008

I have created custom control comTextBox, I added it drag-drop to form. Done, compiled, run, all OK. Month ago I changed control constructor and I added to constructor parameter and I manualy changed all designer.cs files

Compiled, works fine, but components are not visible in design mode.

this is current constructor which works fine fails when Visual Studion loads design form:

public comTextBox (InSettings _InSettings)
{
    this.oInSettings = _InSettings;
}

So, I changed constructor like this (yes I know that in InSettings constructor is large code which will slow application if I create NEW object in every comTextBox control, which is widely used)

public comTextBox ()
{
    this.oInSettings = new InSettings();
}
 

and what a surprise, I get another one error - somethink like object set:
Object reference not set to an instance of an object

So, how to correctly, for Visual Studio too, add a parameter to a constructor?