Error while using Telerik namespace names not found schedule view

Question

I am doing one implementation where I need to have appointment schedule page, so I took information from Telerik and taken codes from Telerik website from the link below. So I created a new project and used the same code in my silverlight, fixed many issues with respect to dll, but there is an issue with the namespace adding in XAML file, I am attaching 3 images, where it shows what the namespace I have used and project list, please let me know what I am missing and what I should do to fix it,if any other information needed please let me know, happy to share

Edit1

I know what does the error says, but I have doubt on my project name namespace i.e. last line of my xaml page, so this is the image where have error list with namespace not found

Edit2

This is the part of my " OrientedGroupHeaderContentTemplateSelector " class

These are the Images

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ScheduleView