Q:

Numeric edit field in WPF?

Is an edit field that accept only numeric value (for example, to edit numeric parameters) supported natively (using .NET libraries)?
It's weird that one has to use third party tools for this simple functionality

A:

No, but the WPF Toolkit includes one.
IntegerUpDown http://i3.codeplex.com/Project/Download/FileDownload.aspx?ProjectName=wpftoolkit&DownloadId=222922

A:

Not directly. You have a few options though:  

use the Extended WPF toolkit, it has some already prepackagaed for you (and it's FREE)  
extend the TextBox control and override the OnPreviewKeyDown function to intercept keypresses you are not interested in

