Web Forms :: Only One Record Displayed In RDLC Report When Binding DataSet

I have 

ReportViewer1.LocalReport.ReportPath = Server.MapPath("reports/trp1.rdlc");               
ReportDataSource rdS = new ReportDataSource("LBLDS_Label", GetData());
ReportViewer1.LocalReport.DataSources.Clear(); 
ReportViewer1.LocalReport.DataSources.Add(rdS); 
ReportViewer1.DataBind();               
ReportViewer1.ServerReport.Refresh();               
ReportViewer1.Visible = true; public DataTable GetData() {
sql statemnet to get data }

When I debug & execute the statement i get 4 records but on the report i get only one record ....