Question

I’m working on a library (.dll) file, and I want to create a little custom TextBox called FatherTextBox, so I started by deriving from TextBoxBase (an abstract class).

After coding the custom logic, I noticed that I get this error message:

The type 'System.Windows.Forms.TextBoxBase' has no constructors defined

So I guess this is not a option:

    public FatherTextBox() : base()
    {

    }

My questions are:

1. What is the way to inherit from an abstract class without a constructor?
2. Why doesn’t TextBoxBase have a constructor?

Answer 1

From MSDN:

You do not typically inherit from TextBoxBase. To create your own text
control class, inherit from TextBox or RichTextBox.

TextBoxBase has an internal constructor, which is why you can’t call it.