protected virtual void OnValidateChar(ValidateCharArgs e)
{
var handler = ValidateChar;
if (handler != null)
{
handler(this, e);
}
}
protected override void OnKeyPress(KeyPressEventArgs e)
{
if (e.KeyChar >= ' ') // Allow the control keys to work as normal
{
var args = new ValidateCharArgs(e.KeyChar);
OnValidateChar(args);
if (args.Cancel)
{
e.Handled = true;
return;
}
}
base.OnKeyPress(e);
}
private void HandlePaste()
{
if (!Clipboard.ContainsText())
{
return;
}
string text = Clipboard.GetText();
var toPaste = new StringBuilder(text.Length);
foreach (char ch in text.ToCharArray())
{
var args = new ValidateCharArgs(ch);
OnValidateChar(args);
if (!args.Cancel)
{
toPaste.Append(ch);
}
}
if (toPaste.Length != 0)
{
Clipboard.SetText(toPaste.ToString());
this.Paste();
}
}
