Subscribe to our YouTube Channel for more Videos

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 🙂

Senthil Kumar B
Senthil Kumar is a former Microsoft MVP (Most Valuable Professional). He is a Co-Author of the book "Windows 10 Development Recipes using JavaScript and CSS" for Apress Publication. He is a technical presenter, blogger, mentor and a Geek.  Senthil is a regular speaker is various local user groups. He has presented at conferences like Great Indian Developer Summit (GIDS) & Microsoft DevCamps. You can reach out to him via his Twitter handle @isenthil.