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我正在尝试使用一个数据集中的两个数据表创建参数化报告，这是因为在第一个数据表中，我正在获取所有记录并将其显示在页面加载事件中，但是当用户输入起始日期和截止日期参数并单击时过滤器我希望报告更改为接受参数的其他数据表。

页面加载时的应用：

在此处输入图像描述

我用这段代码完成了上述工作

     if (Page.IsPostBack == false)
                {
     NetWeightIolaDataSet.Net_Weight_Tracking1DataTable table = new NetWeightIolaDataSet.Net_Weight_Tracking1DataTable();
                    NetWeightIolaDataSetTableAdapters.Net_Weight_Tracking1TableAdapter adpt = 
new NetWeightIolaDataSetTableAdapters.Net_Weight_Tracking1TableAdapter();
     adpt.Fill(table);
     ReportDataSource rds = new ReportDataSource("NetWeightIolaDataSet_Net_Weight_Tracking1", table);
      ReportViewer1.LocalReport.DataSources.Clear();
      ReportViewer1.LocalReport.DataSources.Add(rds);
      ReportViewer1.LocalReport.Refresh();
      ReportViewer1.Visible = true;
                }

如果我使用此代码并在报告中添加参数，我可以获得用于报告的参数：

//ReportParameter param = new ReportParameter("fromdate", fromdate.Text);
  //this.ReportViewer1.LocalReport.SetParameters(new ReportParameter[] { param });
  //ReportParameter paramm = new ReportParameter("todate", todate.Text);
  //this.ReportViewer1.LocalReport.SetParameters(new ReportParameter[] { paramm });

但我不想这样做，而是我想通过数据集中的数据表将参数传递给报告，然后将其分配给报告的源，但是当我这样做时，我得到了这个错误：

A data source instance has not been supplied for the data source 'NetWeightIolaDataSet_Net_Weight_Tracking1'.

我的数据集：

在此处输入图像描述

所以在页面加载时使用不带参数的数据表显示所有数据，但是当提供日期范围并单击过滤器按钮时，使用其他数据表作为报告源：

这是从文本框中传递值并使用参数填充数据表的代码：

 NetWeightIolaDataSet.Net_Weight_TrackingDataTable table = new NetWeightIolaDataSet.Net_Weight_TrackingDataTable();
            NetWeightIolaDataSetTableAdapters.Net_Weight_TrackingTableAdapter adpt = new NetWeightIolaDataSetTableAdapters.Net_Weight_TrackingTableAdapter();

            adpt.Fill(table, DateTime.Parse(fromdate.Text), DateTime.Parse(todate.Text));
            ReportDataSource rds = new ReportDataSource("NetWeightIolaDataSet_Net_Weight_Tracking", table);
            ReportViewer1.LocalReport.DataSources.Clear();
            ReportViewer1.LocalReport.DataSources.Add(rds);
            ReportViewer1.LocalReport.Refresh();
            ReportViewer1.Visible = true;
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2 回答 2

0

所以我最终创建了一个存储过程，并说如果参数为空，那么如果它们有值则给我所有记录运行其他代码并创建一个按钮并将其命名为 AllData 这将在任何时候将所有记录返回给用户时间。

Create PROCEDURE [dbo].[filter] 
(
    @mindate DateTime = NULL,
    @maxdate DateTime = NULL

    )
AS
BEGIN
IF ISNULL(@mindate,'')<>'' AND ISNULL(@maxdate,'')<>''
 BEGIN
    SELECT Date, MIN(Date) AS mindate,MAX(Date) AS maxdate, [Unit UPC Base Item], [Item (Optional)], [Preset Number], [Product Group], Shift, [Rotation Code], BBD, [Operator Name], Supervisor, [Production Line], [Bagger Number], [Start Time], [Stop Time], [Under Counts], [Label Wt on Pkg (g)], [Machine Tare Wt (g)], [Actual Tare Wt (g)], [Verify Target Wt (g)], [Total Count (Proper)], [Mean Gross (g)], [Rptd Mean Net (g)], [Std Dev (g)], [Max (g)], [Min (g)], [TNE (g)], Comments, Field1, Field2, Field3
FROM  [Net Weight Tracking]
GROUP BY Date, [Unit UPC Base Item], [Item (Optional)], [Preset Number], [Product Group], Shift, [Rotation Code], BBD, [Operator Name], Supervisor, [Production Line], [Bagger Number], [Start Time], [Stop Time], 
[Under Counts], [Label Wt on Pkg (g)], [Machine Tare Wt (g)], [Actual Tare Wt (g)], [Verify Target Wt (g)], [Total Count (Proper)], [Mean Gross (g)], [Rptd Mean Net (g)], [Std Dev (g)], [Max (g)], [Min (g)], [TNE (g)], 
Comments, Field1, Field2, Field3
HAVING   (MIN(Date) >= @mindate) AND (MAX(Date) <= @maxdate)
END 
ELSE 
BEGIN
SELECT  Date, CONVERT(varchar(10), MIN(Date), 101) AS mindate, CONVERT(varchar(10), MAX(Date), 101) AS maxdate, [Unit UPC Base Item], [Item (Optional)], [Preset Number], [Product Group], Shift, [Rotation Code], BBD, 
 [Operator Name], Supervisor, [Production Line], [Bagger Number], [Start Time], [Stop Time], [Under Counts], [Label Wt on Pkg (g)], [Machine Tare Wt (g)], [Actual Tare Wt (g)], [Verify Target Wt (g)], [Total Count (Proper)], [Mean Gross (g)], [Rptd Mean Net (g)], [Std Dev (g)], [Max (g)], [Min (g)], [TNE (g)], Comments, Field1, Field2, Field3
FROM  [Net Weight Tracking]
GROUP BY Date, [Unit UPC Base Item], [Item (Optional)], [Preset Number], [Product Group], Shift, [Rotation Code], BBD, [Operator Name], Supervisor, [Production Line], [Bagger Number], [Start Time], [Stop Time], 
[Under Counts], [Label Wt on Pkg (g)], [Machine Tare Wt (g)], [Actual Tare Wt (g)], [Verify Target Wt (g)], [Total Count (Proper)], [Mean Gross (g)], [Rptd Mean Net (g)], [Std Dev (g)], [Max (g)], [Min (g)], [TNE (g)], 
 Comments, Field1, Field2, Field3
END
END
于 2015-10-27T19:10:29.697 回答
-2

这样做很有趣 =>ReportViewer1.LocalReport.DataSources.Clear();之前而不是之后

ReportViewer1.LocalReport.DataSources.Clear();
ReportDataSource("NetWeightIolaDataSet_Net_Weight_Tracking", table);
于 2016-11-24T17:27:48.893 回答