error message

I get 5 error message after i drag a treeview into my page. Please tell me how to solve the problem.
Error 1 The type 'Syncfusion.Web.UI.WebControls.ISFCallbackControl' is defined in an assembly that is not referenced. You must add a reference to assembly 'Syncfusion.Shared.Web, Version=5.202.0.25, Culture=neutral, PublicKeyToken=3d67ed1f87d44c89'. C:\Documents and Settings\vincent\My Documents\Visual Studio 2005\Projects\WebApplication13\WebApplication13\Default.aspx.designer.cs 16 64 WebApplication13
Error 2 The type 'Syncfusion.Web.UI.WebControls.IScriptProviderService' is defined in an assembly that is not referenced. You must add a reference to assembly 'Syncfusion.Shared.Web, Version=5.202.0.25, Culture=neutral, PublicKeyToken=3d67ed1f87d44c89'. C:\Documents and Settings\vincent\My Documents\Visual Studio 2005\Projects\WebApplication13\WebApplication13\Default.aspx.designer.cs 16 64 WebApplication13
Error 3 The type 'Syncfusion.Web.UI.WebControls.ISFCallbackControlOptional' is defined in an assembly that is not referenced. You must add a reference to assembly 'Syncfusion.Shared.Web, Version=5.202.0.25, Culture=neutral, PublicKeyToken=3d67ed1f87d44c89'. C:\Documents and Settings\vincent\My Documents\Visual Studio 2005\Projects\WebApplication13\WebApplication13\Default.aspx.designer.cs 16 64 WebApplication13
Error 4 The type 'Syncfusion.Web.UI.WebControls.ICallbackResourceProvider' is defined in an assembly that is not referenced. You must add a reference to assembly 'Syncfusion.Shared.Web, Version=5.202.0.25, Culture=neutral, PublicKeyToken=3d67ed1f87d44c89'. C:\Documents and Settings\vincent\My Documents\Visual Studio 2005\Projects\WebApplication13\WebApplication13\Default.aspx.designer.cs 16 64 WebApplication13
Error 5 The type 'Syncfusion.Web.UI.WebControls.Tools.Common.IAutoFormat' is defined in an assembly that is not referenced. You must add a reference to assembly 'Syncfusion.Shared.Web, Version=5.202.0.25, Culture=neutral, PublicKeyToken=3d67ed1f87d44c89'. C:\Documents and Settings\vincent\My Documents\Visual Studio 2005\Projects\WebApplication13\WebApplication13\Default.aspx.designer.cs 16 64 WebApplication13

Hi,

Thanks for using Syncfusion products.

You got all the 5 errors regaring of including the assembly 'Syncfusion.Shared.Web'. Please add this assembly using the following steps

1.Rightclick the name of the application
2.Click on 'AddReferences'.
3.AddReferences Window will open there select .NET tab
4.There you can find component name as Syncfusion.Shared.Web
5.Select it and press ok.

Now Rebuild your solution and run your sample.

Please let me know if this helps you.

Regards,
S.Rajarajesawari