Issue with code trying to convert from one type to another

My solution contains three projects.  Two of them are library projects with Telerik reports while the other is a simple web project.  There were two links on the default.aspx page that used the code behind file below.  The code in the LinkButton1 and LinkButton2 click events on the Default.aspx page worked and exported the excel files correctly.  The one that exports the direct deal log on this page is still there temporarily until I get this sorted out.
We decided to have one link on each page, so I added the DirectDealLog.aspx page, to hold the link that runs the code in the LinkButton1_Click method.  This code was copied over to this new page, but won't run on that page.  
I think the issue relates to the namespaces and types, but I don't understand exactly what it is.  The Default.aspx file was the original page that had both links on it and they both work.  Now I get the error below for the new DirectDealLog.aspx.cs fi ...