SubreportProcessing 事件未触发

Question

子报表进程事件处理程序在尝试调试时未触发

    SqlDataAdapter dataAdapter = new SqlDataAdapter(sqlcomm);
    dataAdapter.Fill(dataset);
    this.reportViewer1.LocalReport.ReportPath = Application.StartupPath + "\sale_dept.rdl";
 this.reportViewer1.LocalReport.DataSources.Clear();
this.reportViewer1.LocalReport.DataSources.Add(new Microsoft.Reporting.WinForms.ReportDataSource("DataSet1", dataset.Tables[0]));
this.reportViewer1.LocalReport.SubreportProcessing +=
new SubreportProcessingEventHandler(addsubreport);
this.reportViewer1.RefreshReport();




 void addsubreport(object sender, SubreportProcessingEventArgs e)
        {

            SqlConnection conn = new SqlConnection(source);
            DataSet dataset = new DataSet();
            conn.Open();

           SqlCommand sqlcomm = new SqlCommand("subreportquery", conn);

           SqlDataAdapter dataAdapter = new SqlDataAdapter(sqlcomm);
           dataAdapter.Fill(dataset);

           e.DataSources.Add(new ReportDataSource("discount", dataset.Tables[0]));
        }

当我运行处于调试模式的 pgm 时，上述处理程序未触发。

Answer 1

我发现了问题。我将其作为答案发布，因为它可能会在将来对某人有所帮助。

SubreportProcessingEventHandler 只会为 .rdlc 子报表触发。在我的项目主报表和所有子报表中都是 .rdl 扩展名。所以我所做的唯一更改是转到命令提示符并将子报表扩展名重命名为 .rdlc

例如：- ren discount.rdl discount.rdlc

然后相应地附上子报告的数据集。

查看代码如下

SqlDataAdapter dataAdapter = new SqlDataAdapter(sqlcomm);
dataAdapter.Fill(dataset);
this.reportViewer1.LocalReport.ReportPath = Application.StartupPath + "\main_rpt.rdl";
this.reportViewer1.LocalReport.DataSources.Clear();
this.reportViewer1.LocalReport.SubreportProcessing +=
new SubreportProcessingEventHandler(addsubreport);
this.reportViewer1.LocalReport.DataSources.Add(new Microsoft.Reporting.WinForms.ReportDataSource("DataSet1", dataset.Tables[0]));
this.reportViewer1.RefreshReport();


void addsubreport(object sender, SubreportProcessingEventArgs e)
{

SqlCommand sqlcomm = new SqlCommand();
SqlDataAdapter dataAdapter = new SqlDataAdapter();
DataSet dataset = new DataSet();

Switch(e.ReportPath)
{
case "subreport1":
   sqlcomm = new SqlCommand( "Query for subreport one", conn);
   dataAdapter = new SqlDataAdapter(sqlcomm);
   dataAdapter.Fill(dataset);
   e.DataSources.Add(new ReportDataSource("DataSet for subreport1", dataset.Tables[0]));
   break;
case "subreport2":
   sqlcomm = new SqlCommand( "Query for subreport two", conn);
   dataAdapter = new SqlDataAdapter(sqlcomm);
   dataAdapter.Fill(dataset);
   e.DataSources.Add(new ReportDataSource("DataSet for subreport2", dataset.Tables[0]));
   break;
case "subreport3":
   sqlcomm = new SqlCommand( "Query for subreport three", conn);
   dataAdapter = new SqlDataAdapter(sqlcomm);
   dataAdapter.Fill(dataset);
   e.DataSources.Add(new ReportDataSource("DataSet for subreport3", dataset.Tables[0]));
   break;

 }

}

如果您有多个子报表，则需要切换。主要注意事项

1.All 子报告应具有扩展名 .rdlc

2.if 正在传递任何参数，确保它也被正确命名。

正确指定路径。最好将主报表和子报表放在同一个文件夹中。

现在运行 C# 应用程序将显示主报表和所有子报表

SubreportProcessing 事件未触发

SubreportProcessing Event not Firing

c#

subreport

reporting-services