如何将参数传递给Rdlc报告 [英] How Do I Passing Parameter To Rdlc Report

问题描述

大家好，



我试图将参数从组合框传递到我的rdlc报告，下面是我的代码：

  private   void  ReportData（ string  schname）
 {
 DataSet4TableAdapters.NotStartedRegTableAdapter ta =  new  DataSet4TableAdapters.NotStartedRegTableAdapter（）; 
 DataSet4.NotStartedRegDataTable dt =  new  DataSet4.NotStartedRegDataTable（）; 
 ta.Fill（dt，schname）; 
 ReportDataSource rds =  new  ReportDataSource（）; 
 rds.Name =   DataSet4; 
 rds.Value = dt; 
  //   Microsoft.Reporting.WinForms.ReportDataSource reportDataSource4 = new Microsoft.Reporting.WinForms.ReportDataSource（DataSet4 ，dt.AsEnumerable（）。CopyToDataTable（））;  
 ReportParameter rp =  new  ReportParameter（  schoolName，schname）; 
 
 reportViewer1.LocalReport.DataSources.Clear（）; 
 reportViewer1.LocalReport.ReportPath =   Report4.rdlc; 
 reportViewer1.LocalReport.SetParameters（ new  ReportParameter [] {rp}）; 
 reportViewer1.LocalReport.DataSources.Add（rds）; 
 reportViewer1.LocalReport.Refresh（）; 
} 
 

调用方法：

 ReportData（cboSchools.Text）; 

它没有报告任何错误，但是没有加载报告，我有什么遗漏？

解决方案

我能够自己解决这个问题，我添加了reportViewer1.LocalReport.Refresh（）;在调用方法之后，它的工作原理！感谢

Hello everyone,

I am trying to pass parameter from a combo box to my rdlc report, below is my code:

private void ReportData( string schname)
  {
      DataSet4TableAdapters.NotStartedRegTableAdapter ta = new     DataSet4TableAdapters.NotStartedRegTableAdapter( );
      DataSet4.NotStartedRegDataTable dt = new DataSet4.NotStartedRegDataTable( );
      ta.Fill( dt, schname );
      ReportDataSource rds = new ReportDataSource( );
      rds.Name = "DataSet4";
      rds.Value = dt;
      //Microsoft.Reporting.WinForms.ReportDataSource reportDataSource4 = new Microsoft.Reporting.WinForms.ReportDataSource( "DataSet4", dt.AsEnumerable( ).CopyToDataTable( ) );
      ReportParameter rp = new ReportParameter( "schoolName", schname );

      reportViewer1.LocalReport.DataSources.Clear( );
      reportViewer1.LocalReport.ReportPath = "Report4.rdlc";
      reportViewer1.LocalReport.SetParameters( new ReportParameter[] { rp } );
      reportViewer1.LocalReport.DataSources.Add( rds );
      reportViewer1.LocalReport.Refresh( );
  }

The calling method:

ReportData(cboSchools.Text );

its not reporting any error, but the report is not loaded, is there anything i am missing?

解决方案

i was able to resolve this myself, i added reportViewer1.LocalReport.Refresh( ); after the calling method, and it works! Thanks

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