protected void Button2_Click(object sender, EventArgs e) { List <View_1> view = null; using (PetClinicEntities dc = new PetClinicEntities()) { view = dc.View_1.OrderBy(a => a.Pet_ID).ToList(); ReportViewer1.LocalReport.ReportPath = Server.MapPath("~/Reports/Report1.rdlc"); ReportViewer1.LocalReport.DataSources.Clear(); ReportDataSource rdc = new ReportDataSource("DataSet1", view); ReportViewer1.LocalReport.DataSources.Add(rdc); ReportViewer1.LocalReport.Refresh(); } }