public void setDataParticular(string name)
{
mainDal m = new mainDal();
DataTable t = m.getPArticularReport(name);
_reportViewer.LocalReport.DataSources.Clear();
// it will clear the data source of
//report if any.
_reportViewer.LocalReport.DataSources.Add(new Microsoft.Reporting.WinForms.ReportDataSource("DataSet1", t.DefaultView));
// it will set the data source of report. First argument is dataset and 2nd in the table.
_reportViewer.LocalReport.ReportPath = "../../Report1.rdlc";
// this sets the path of //report.
_reportViewer.LocalReport.EnableExternalImages = true;
_reportViewer.Visible = true;
_reportViewer.RefreshReport();
}