WPF: How do I prevent users from entering text in a Textbox data bound to a numeric property?

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WPF: How do I prevent users from entering text in a Textbox data bound to a numeric property?

+1 A:

The standard validation will handle this...

You can also use a Behavior or attached property to override TextBox's input to prevent non-numeric numbers from being entered. Here is a sample behavior that does this.

Reed Copsey 2010-02-24 20:22:50

I like the phrase "standard validation". Where can I learn more about this?

Jonathan Allen 2010-02-24 20:58:30

Here's a good article on validation in WPF: http://www.codeproject.com/KB/WPF/wpfvalidation.aspx

sparks 2010-02-24 21:02:09

@Jonathan: Just realize that the "standard" way of validating in WPF is to let them type in Text, but show an error. By using a behavior, you can make it so they can't type in text to begin with...

Reed Copsey 2010-02-24 21:24:00

I understand, but I figure knowing both options will be important in the long run.

Jonathan Allen 2010-02-24 22:12:09

ansaurus

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WPF: How do I prevent users from entering text in a Textbox data bound to a numeric property?

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