DataBindings.Add using IFormatProvider

Question

I am trying to use IFormatProvider to configure some data bindings; however, the IFormatProvider class is never called. I set breakpoints at the beginning of both functions in my personalization class, and none of them fell into data binding. When I use my own formation class with String.Format, it works.

I am using .Net 2.0 and winforms.

This is how I do data bindings:

label1.DataBindings.Add("Text", textBox1, "Text", true, 
                            DataSourceUpdateMode.OnPropertyChanged, 
                "<NULL>","{0:H}",new MyFormat());

This is how I used String.Format:

string test =(string.Format(_superFormat, "{0}", "this is my arg"));

And this is my own formation class:

    class MyFormat : IFormatProvider, ICustomFormatter
    {
        string ICustomFormatter.Format(string format, object arg, IFormatProvider formatProvider)
        {
            string result = ((string)arg).ToUpper();
            return result ;
        }
        object IFormatProvider.GetFormat(Type formatType)
        {
            if (formatType == typeof(ICustomFormatter))
                return this;
            else
                return null;
        }
    }

Answer 1

What exactly are you trying to do?

, Text , , , string IFormattable.

Binding ( DataBindings.Add) Format Parse , . TypeConverter , , .

: , ?