CODEWITHSUNDEEP
c#wpfdata-binding
wondra
wondra

Reputation: 3583

WPF binding TextBox to integer property without throwing exception

I am binding TextBox.Text to int property:

<TextBox Text="{Binding Lines, UpdateSourceTrigger=PropertyChanged}" />

private int _lines = 10;
public int Lines
{
    get { return _lines; }
    set { _lines = value; }
}

everything works as expected with this simple code, there is even validation for the TextBox. There is however exception System.FormatException thrown in the Output log. My question is:
Is there elegant way to get rid of the exception without reimplementing almost everything myself?
By everything I mean validators, convertors, etc. simply ton of code that does not do anything but call Int32.TryParse instead of Int32.Parse. Not that exception thrown and handled by wpf would be a big problem, but full log makes finding actual problems much more difficult.

Upvotes: 2

Views: 2885

Answers (1)

Peter Duniho
Peter Duniho

Reputation: 70671

The question isn't all that clear, but I assume you are referring to an exception that occurs if the user enters invalid text (i.e. non-numeric, non-integer data).

AFAIK, WPF does not include a built-in control that restricts user input. So your options are:

Upvotes: 1

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