如何从数据集中获取数据以显示在 ReportViewer 中？

Question

我在 WindowsFormHost 中创建了一个 ReportViewer。这是我的 XAML 代码。

<Grid x:Name="grdPrintingGrid" Visibility="Visible" Height="440" Margin="105, 0, 0 0" VerticalAlignment="Top" Grid.ColumnSpan="2" >
        <TextBox x:Name="txtPRTTitle" IsReadOnly="True" HorizontalAlignment="Left" Height="32" Margin="10,4,0,0" VerticalAlignment="Top" Width="450" FontFamily="Arial" FontSize="18.667" Background="#FFE8F9FF" BorderThickness="0"/>
        <WindowsFormsHost x:Name="wfhFormsHost" Visibility="Hidden" HorizontalAlignment="Left" Height="312" Margin="10,54,0,0" VerticalAlignment="Top" Width="683">
            <rv:ReportViewer x:Name="rvWeeklyList" />
        </WindowsFormsHost>

        <Grid x:Name="grdPWLGrid" Visibility="Visible" Height="440" Margin="0, 0, 0 0" VerticalAlignment="Top">
            <DataGrid IsReadOnly="True" Name="dgPWLCGrid" ScrollViewer.HorizontalScrollBarVisibility="Hidden" Background="#FFE8F9FF" HorizontalAlignment="Left" VerticalAlignment="Top" Height="255" Margin="10,62,0,0" Width="693" BorderThickness="1" BorderBrush="Black" CanUserResizeRows="False" >
            </DataGrid>

            <Button x:Name="btnPWLPrint" Content="Print" HorizontalAlignment="Left" Height="26" Margin="307,388,0,0" VerticalAlignment="Top" Width="74" FontFamily="Arial" FontSize="14.667" Background="#FFEEFFFF" Click="btnPWLPrint_Click"/>
        </Grid>
    </Grid>

我正在我的数据库中调用一个存储过程来获取数据。我使用报告向导来创建我的报告 rdlc。我称它为PrintWeeklyList.rdlc。对于选择数据源类型，我选择了数据库。对于选择数据库模型，我选择数据集。对于数据库对象，我选择了一个名为GetPrintWeeklyListData 的存储过程。我将数据源命名为 PrintWeeklyListDataSet。我将 DataSet 命名为 PrintWeeklyListDS。

这是我加载 ReportViewer 的 C# 代码：

private void RVWeeklyList_Load(object sender, EventArgs e)
{
        if (!isReportViewerLoaded)
        {
            ReportViewer rvWeeklyList = new ReportViewer();

            Microsoft.Reporting.WinForms.ReportDataSource reportDataSource1 =
                new Microsoft.Reporting.WinForms.ReportDataSource();

            PrintWeeklyListDataSet dataset = new PrintWeeklyListDataSet();

            dataset.BeginInit();

            reportDataSource1.Name = "PrintWeeklyListDS"; //Name of the report dataset in our .RDLC file
            reportDataSource1.Value = dataset.GetPrintWeeklyListData;
            rvWeeklyList.LocalReport.DataSources.Add(reportDataSource1);

            //rvWeeklyList.ServerReport.GetDataSources();
            rvWeeklyList.ProcessingMode = Microsoft.Reporting.WinForms.ProcessingMode.Local;
            rvWeeklyList.LocalReport.ReportEmbeddedResource = "PrintWeeklyList.rdlc";

            dataset.EndInit();
            PrintWeeklyListDataSetTableAdapters.GetPrintWeeklyListDataTableAdapter pwlTableAdapter =
                new PrintWeeklyListDataSetTableAdapters.GetPrintWeeklyListDataTableAdapter();
            pwlTableAdapter.ClearBeforeFill = true;
            pwlTableAdapter.Fill(dataset.GetPrintWeeklyListData);


            rvWeeklyList.LocalReport.Refresh();
            rvWeeklyList.RefreshReport();


            isReportViewerLoaded = true;
        }
    }

当我单步执行代码时，我看到 dataset 和 rvWeeklyList 都包含来自存储过程的数据。我一直在搜索谷歌，但我无法弄清楚我缺少什么来显示数据。任何代码示例将不胜感激。

Answer 1

首先，将WindowsFormsHost改为Visibility="Visible"

其次，确保PrintWeeklyList.rdlc文件的Build Action设置为Embedded Resource

现在使用下面的修改后的代码，并确保将 substring<VisualStudioProjectName> 替换为 ReportEmbeddedResource 的 Visual Studio 项目的名称：

public MainWindow()
{
    InitializeComponent();
    rvWeeklyList.Load += RVWeeklyList_Load;
}

private void RVWeeklyList_Load(object sender, EventArgs e)
{
    if (!isReportViewerLoaded)
    {
        Microsoft.Reporting.WinForms.ReportDataSource reportDataSource1 =
            new Microsoft.Reporting.WinForms.ReportDataSource();

        PrintWeeklyListDataSet dataset = new PrintWeeklyListDataSet();

        dataset.BeginInit();

        reportDataSource1.Name = "PrintWeeklyListDS";
        reportDataSource1.Value = dataset.GetPrintWeeklyListData;
        rvWeeklyList.LocalReport.DataSources.Add(reportDataSource1);

        rvWeeklyList.LocalReport.ReportEmbeddedResource = 
           @"<VisualStudioProjectName>.PrintWeeklyList.rdlc";

        dataset.EndInit();

        PrintWeeklyListDataSetTableAdapters.GetPrintWeeklyListDataTableAdapter pwlTableAdapter =
            new PrintWeeklyListDataSetTableAdapters.GetPrintWeeklyListDataTableAdapter();
        pwlTableAdapter.ClearBeforeFill = true;
        pwlTableAdapter.Fill(dataset.GetPrintWeeklyListData);

        rvWeeklyList.RefreshReport();

        isReportViewerLoaded = true;
    }
}

MSDN文章参考：https://msdn.microsoft.com/en-us/library/hh273267.aspx