Home / Community & Support / Developer Productivity Tools Forums / ASP.NET AJAX > BinaryImage > Unable to cast object of type 'System.DBNull' to type 'System.Byte[]'.

• Canis Lupus

  Posted on May 24, 2011 (permalink)

  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.

  Reply

• Canis Lupus

  Posted on May 24, 2011 (permalink)

  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.

  Reply

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