private void PopulateReport()
{
using (Tr_DBEntities db = new Tr_DBEntities())
{
var v = (from a in db.GetDetailProc()
select a);
ReportDataSource rd = new ReportDataSource("ds_Tr", v.ToList());
ReportViewer1.LocalReport.DataSources.Add(rd);
ReportViewer1.LocalReport.Refresh();
}
}