Telerik RadControls for Windows Phone – Article #4 – UnKnown Namespace Error

If you are getting the similar “UnKnown Namespace ” Error like the one shown in the screenshot below when using the Telerik RadControls for Windows Phone , then it might be because of the wrong namespace being declared in the PhoneApplicationPage.

The type ‘RadRating’ was not found because ‘http://schemas.telerik.com/windowsphone’ is an unknown namespace. [Line: 32 Position: 114]

Telerik RadControls for Windows Phone – Article #4 – UnKnown Namespace Error

Telerik RadControls for Windows Phone – Article #4 – UnKnown Namespace Error

I got this error when using the RadRating control in a sample WP7 project .

To fix the above error , i modified the name space in XAML page

From

xmlns:telerik=”http://schemas.telerik.com/windowsphone”

To

xmlns:telerik=”clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.Input”

Thats it . Everything started working normally :)

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Senthil Kumar is a Speaker , Blogger and Software Engineer from Bangalore. He is a Microsoft MVP in Client Development. He primarily works on .NET technologies like C# , ASP.NET MVC , Entity Framework , SQL Server etc. He is a Windows Phone Enthusiast and writes about Windows Phone and Mobile development at MobileOSGeek.com.
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