Thanks for contacting us and for your interest in RadControls for Windows Phone 7.
Currently our installation package does not integrate the controls into the Visual Studio's toolbox so you should either manually add them, or directly use them in XAML by referencing the needed assemblies.
Also note that the RadNumericUpDown
control is available as of the CTP2 release of RadControls for Windows Phone 7
so make sure that you are using this version of our suite.
I hope this helps.
Let me know if you need further assistance on this.
All the best,
the Telerik team
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