报告后面的代码查看器 [英] report Viewer in code behind

问题描述

我在以下代码中遇到问题：

 此 .reportViewer1.LocalReport .DataSources.Clear（）; 
 DataTable dt =  new  DataTable（）; 
 SqlDataAdapter da =  new  SqlDataAdapter（  select *来自输入，con）; 
 
 da.Fill（dt）; 
 
 Microsoft.Reporting.WinForms.ReportDataSource rprtDTSource =  new  Microsoft.Reporting.WinForms.ReportDataSource（   input，dt）; 
 
  this  .reportViewer1 .LocalReport.DataSources.Add（rprtDTSource）; 
  this  .reportViewer1 .RefreshReport（）; 
 
  //  它在报表查看器中没有加载任何内容，当检查表dt时它有值，但无法显示，请帮助 
  //  我有仅设计视图上的报表查看器 

解决方案

尝试：

 ReportDataSource rds =  new  ReportDataSource（  input ，dt）; 
 
 ReportViewer1.LocalReport.ReportPath = Server.MapPath（  Report.rdlc）; 
 ReportViewer1.LocalReport.DataSources.Clear（）; 
 ReportViewer1.LocalReport.DataSources.Add（rds）; 
 ReportViewer1.LocalReport.Refresh（）; 
 

请按照以下文章：

在Web应用程序中使用Asp.Net本地报告（RDLC） [ ^ ]

感谢您的帮助，但

仍然无法显示报告查看器上的任何东西，并没有给出任何错误或异常，我正在使用Windows应用程序，这是我给你的mofified后的代码：

 Microsoft.Reporting.WinForms.ReportDataSource rds =  new  Microsoft.Reporting.WinForms.ReportDataSource（  input，dt）; 
 此 .reportViewer1.LocalReport.ReportPath =   Report.rdlc; 
 reportViewer1.LocalReport.DataSources.Clear（）; 
 reportViewer1.LocalReport.DataSources.Add（rds）; 
 reportViewer1.LocalReport.Refresh（）; 
  //   Report.rdlc是包含表输入的所有列的报告 

hi,, I have a problem in the following code:

            this.reportViewer1.LocalReport.DataSources.Clear();
            DataTable dt = new DataTable(); 
SqlDataAdapter da = new SqlDataAdapter("select * from input", con);
           
            da.Fill(dt);

            Microsoft.Reporting.WinForms.ReportDataSource rprtDTSource = new Microsoft.Reporting.WinForms.ReportDataSource("input", dt);

            this.reportViewer1 .LocalReport.DataSources.Add(rprtDTSource);
            this.reportViewer1 .RefreshReport(); 

//it loads nothing in the report viewer, and when check the table dt it has a value ,, but can't be displayed,, please help
// I have only Report viewer on the design view

解决方案

Try:

ReportDataSource rds = new ReportDataSource("input", dt);

ReportViewer1.LocalReport.ReportPath = Server.MapPath("Report.rdlc");
ReportViewer1.LocalReport.DataSources.Clear();
ReportViewer1.LocalReport.DataSources.Add(rds);
ReportViewer1.LocalReport.Refresh();

Please follow the below article:
Using Asp.Net Local Report (RDLC) in Web Applications[^]

thank you for your help but
still dosn''t display any thing on the report viewer and dosn''t give any error or exception,, am using windows app, and that was the code after I mofified it to yours.:

Microsoft.Reporting.WinForms.ReportDataSource rds = new  Microsoft.Reporting.WinForms.ReportDataSource("input", dt);
            this.reportViewer1.LocalReport.ReportPath = "Report.rdlc";
            reportViewer1.LocalReport.DataSources.Clear();
            reportViewer1.LocalReport.DataSources.Add(rds);
            reportViewer1.LocalReport.Refresh(); 
//Report.rdlc is report that has all column of table input

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