protected override void OnPreviewTextInput(TextCompositionEventArgs e)
{
TextBox textBox = (TextBox)e.OriginalSource;
string text = textBox.SelectionLength > 0 ? textBox.Text.Remove(textBox.SelectionStart, textBox.SelectionLength) : textBox.Text;
text = text.Insert(textBox.CaretIndex, e.Text);
e.Handled = !NumericProperties.IsStringNumeric(text, np);
base.OnPreviewTextInput(e);
}
protected override void OnPreviewTextInput(TextCompositionEventArgs e)
{
TextBox textBox = (TextBox)e.OriginalSource;
string text = textBox.SelectionLength > 0 ? textBox.Text.Remove(textBox.SelectionStart, textBox.SelectionLength) : textBox.Text;
text = text.Insert(textBox.CaretIndex, e.Text);
if (!(e.Handled = !NumericProperties.IsStringNumeric(text, np)))
{
updateText = false;
Value = double.Parse(text == "" || text == "." || text == "-" || text == "-." ? "0" : text, np.Styles, CultureInfo.InvariantCulture);
updateText = true;
}
base.OnPreviewTextInput(e);
}
