Formatting doesn't work

[Michael Wong]

I am trying to format a textbox (to display it as percentage) using the
following code (taken from the help sample), but it doesn't work and I found
the faulty line but don't know what to do with it.

private BindDiscount()
{
Binding b = new Binding("Text", this.dsInventory1, "Table.Discount");
b.Format += new ConvertEventHandler(DoubleToPercentageString); // this line
makes all other controls blank
b.Parse += new ConvertEventHandler(PercentageStringToDouble);
tbDiscount.DataBindings.Add(b);
}

private void DoubleToPercentageString(object sender, ConvertEventArgs
cevent)
{
// The method converts only to string type. Test this using the
DesiredType.
if(cevent.DesiredType != typeof(string)) return;

// Use the ToString method to format the value as percentage ("p").
cevent.Value = ((double)cevent.Value).ToString("p");
}

private void PercentageStringToDouble(object sender, ConvertEventArgs
cevent)
{
// The method converts back to double type only.
if(cevent.DesiredType != typeof(double)) return;

// Converts the string back to double using the static Parse method.
cevent.Value = Double.Parse(cevent.Value.ToString(),NumberStyles.Any,
null);
}

 

[Miha Markic]

Hi Michael,

Check if there is an exception raised within DoubleToPercentageString event
or try to comment some of its lines and see what happens.
(It should work just fine)