This is all being done with a code-behind and is an Web Application project.



Thanks!

Oh, and is this a Web Site, or a Web Application Project?

Is the page using code-behind or is all of the .NET code in <script> tags?

I added the WBBS to the page, set the business object on the WBBS, saved the page, closed and re-opened VS. Same problem (and that error pops up multiple times).



I then tried setting the DataSourceID property on the gridview, saved the page, closed and re-opened VS. Still occurred after that, too.



Anything else I can try?



Thanks!

Working with the VSTypeReslutionService can cause some problems... sometimes you have to build the project and reload VS before the DLLs within the IDE are refreshed for use.  So, once you set the business object, save the files, build the project, and reload Visual Studio.

I'm trying to bind a GridView control to a business object using the WebBusinessBindingSource object. I get the WBBS object added to my ASP.NET page with no problem and tell it which business object to use. However, when I bind the GridView to the WBBS, I get an ArgumentNullException (see the attached image).



Is there a property I need to change to make the GridView work with the WBBS?



Thanks!