“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

Check you database structure.... if you are acceding your data throw a dbml file, the table structure in your database it's different of the dbml file structure