gridview1.DataSource = Yourdll.YourClass.GetData(); //GetData returns datatable or dataset

gridview1.AutoGenerateColumns = true;
gridview1.DataMember = "Name_of_your_datatable"; //If you're using DataSet
gridview1.DataBind();

但是你的问题很模糊.

希望对您有所帮助.

But your question is fuzzy.

Hope it helps.