怎么为REPORTVIEW动态添加数据源？_.NET报表

如何为REPORTVIEW动态添加数据源？？？？？
REPORTVIEWER绑定的是objecdatasource，但执行reset的之后原来的绑定没有了，
请问如何重新绑定原来的objectdatasource数据源？？？

<rsweb:ReportViewer ID="ReportViewer" runat="server">
<LocalReport >
<DataSources>
<rsweb:ReportDataSource DataSourceId="ODS_Report" Name="JSMonDataSet_VDBasicSingleTable" />
<rsweb:ReportDataSource DataSourceId="ODS_Report" Name="JSMonDataSet_VDBasicAllTable" />
</DataSources>
</LocalReport>
</rsweb:ReportViewer>

------解决方案--------------------------------------------------------

C# code

 ReportView1.Reset();Dataset ds=new DataSet();            ReportView1.ProcessingMode = ProcessingMode.Local;            Microsoft.Reporting.WebForms.ReportDataSource rds = new ReportDataSource();            rds.Value = ds.Tables[0];            LocalReport r = ReportView1.LocalReport;            r.DataSources.Add(rds);//add datasource
------解决方案--------------------------------------------------------
C# code            ReportDataSource myRptDS = new ReportDataSource();            myRptDS.DataSourceId = "ObjectDataSource1";            ReportViewer1.LocalReport.DataSources.Add(myRptDS);            ReportViewer1.LocalReport.Refresh();