I have a visual Web Part completed in C# with an update panel. My boss wants it in VB, so created a new VWP project in VB.net, and I copied and pasted the markup from the C# project to the VB project.
I imediately got an error telling me that System.Web.UI.UpdatePanel was not defined. (same thing with the updateProgress control)
I built the project and it still threw the error. I even tried removing all ajax controls, and then going into design view, followed by adding them from the Toolbox - - still - -same thing
the odd thing is that it points to line 1 - and puts a blue squiggly under it:
View Complete Post