reportviewer in c# shows me just one row from the table

Question

hello all
i have areport in c#
wich connected to dataset
i have adtaviewer
but when i added rows to the table in the datset i c just one row
 
plese help
this is the code wich i wrote
DataSet1.Tables[0].Rows.Add("11","22");
DataSet1.Tables[0].Rows.Add("11", "22");
DataSet1.Tables[0].Rows.Add("11", "22");
this.reportViewer1.RefreshReport();