“Both DataSource and DataSourceID are defined” error using ASP.NET GridView

Question

\"Both DataSource and DataSourceID are defined on \'grdCommunication\'. Remove one definition.\"

I just got this error today, the code has been working until this after

Answer 1

I got this error today, turns out that it had nothing to do with DataSourceID, and had everything to do with the DatasSource itself.

I had a problem in my DatasSource , and instead of getting a DatasSource related error, I got this meaningless error.

Make sure you're DatasSource is good, and this error should go away.