An example where this might make a difference (two-way conversion) is for encryption/decryption. Your encryption class takes a parameter for the Plain text data, and another parameter for the encryption key. You need to use the Encoding.Default to ensure that you don't lose any characters in the encrypt/decrypt process.

Dim plainText As Byte() = Encoding.Default.GetBytes(data)
Dim key As Byte() = Encoding.Default.GetBytes(userKey)

from a solution provided by Rick Strahl in Message #1235288

    
Public Shared Function GetXLRange(ByVal pSheet As Excel.Worksheet, ByVal pCell1 As String, ByVal pCell2 As String) As Excel.Range
        Try
            Dim rng As Excel.Range
            rng = CType(pSheet.Range(pCell1, pCell2), Excel.Range)
            Return rng

        Catch ex As Exception
            'Process the error
            Return Nothing
        End Try
End Function

from a solution provided by Éric Moreau in Message #1185450

        Dim popupScript As String = "<script language='javascript'>  window.close() </script>"
        Page.RegisterStartupScript("PopupScript", popupScript)

from a solution provided by Keith Payne in Message #1170098

You need to subclass the control and dig into the message queue. For example, subclass the TextBox and do something like this:

public class MyTextBox : TextBox
{
    private const int WM_PASTE = 0x302;

    protected override void WndProc(ref Message m)
    {
        if (m.Msg == WM_PASTE)
            OnSomethingPasted();

        base.WndProc(ref m);
    }

    protected virtual void OnSomethingPasted()
    {
        //
        // Override this and do something.
        //
    }
}

from a solution provided by Neil Tonkin in Message #1212359