Unable to cast object of type 'System.DBNull' to type 'System.Byte[]'.

[Canis Lupus]

This is how I formed my control

<telerik:RadBinaryImage ID="imageThumbnail" runat="server" DataValue='<%# Eval("imageThumbData") %>' ImageUrl="~/imageLibrary/common/nopic.gif" Width="125" Height="125" />

When I run the application I get an error saying

Unable to cast object of type 'System.DBNull' to type 'System.Byte[]'.

Isnt the imageURL suppose to handle this null case? How can I fix it?

Thank you.

[Canis Lupus]

Solved it from other posts.

<telerik:RadBinaryImage ID="imageThumbnail" runat="server" DataValue='<%#IIf(Typeof(Eval("imageThumbData")) is DBNull, Nothing, Eval("imageThumbData"))%>' ImageUrl="~/imageLibrary/common/loading.gif" Width="125" Height="125" />

Above code works for me.