带有 2 个参数的 RDLC 报告(存储过程) [英] RDLC Report (Stored Procedure) with 2 Parameters

问题描述

private void Form1_Load(object sender, EventArgs e)
    {
        // TODO: This line of code loads data into the 'DataSet1.sp_GetRent1' table. You can move, or remove it, as needed.
        this.sp_GetRent1TableAdapter.Fill(this.DataSet1.sp_GetRent1, "@RentNo1", "@AppPath");
        //this.GetSPResult();
        this.reportViewer1.RefreshReport();
    }

private void button1_Click(object sender, EventArgs e)
    {
        DataTable dt = new DataTable();
        reportViewer1.Visible = true;
        reportViewer1.LocalReport.ReportPath = "Report1.rdlc";
        reportViewer1.LocalReport.DataSources.Clear();
        reportViewer1.LocalReport.DataSources.Add(new Microsoft.Reporting.WinForms.ReportDataSource("DataSet1",dt));
        GetSPResult();
    }

private DataTable GetSPResult()
    {
        DataTable ResultsTable = new DataTable();
        SqlConnection conn = new SqlConnection("Data Source=.;Initial Catalog=RentACar1;Integrated Security=True");// ProviderName = "System.Data.SqlClient");
        try
        {
            SqlCommand cmd = new SqlCommand("sp_GetRent1",conn);
            cmd.CommandType = CommandType.StoredProcedure;
            cmd.Parameters.AddWithValue("@RentNo1", "9905-10-2017");
            cmd.Parameters.AddWithValue("@AppPath", @"E:\Rent A Car\RentACar1\RentACar\bin\Debug");
            conn.Open();
            //cmd.ExecuteNonQuery();
            SqlDataAdapter adaptor = new SqlDataAdapter(cmd);
            adaptor.SelectCommand = cmd;
            adaptor.Fill(ResultsTable);
        }
        catch(Exception ex)
        {
            MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
        }
        return ResultsTable;
    }

此代码在 RDLC 报告中没有显示任何内容.如果我打开 dataset1.xsd，并将相同的参数提供给 SP，我将获得网格中的值.但我无法在 RDLC 中获取值.

This code doesn't show me anything in RDLC report. If i open dataset1.xsd, and I give the same parameters to the SP, I get values in grid. But I am unable to get values in RDLC.

推荐答案

您的 button1_Click 应如下所示:

Your button1_Click should look like this:

private void button1_Click(object sender, EventArgs e)
{
    DataTable dt = GetSPResult();
    reportViewer1.Visible = true;
    reportViewer1.LocalReport.ReportPath = "Report1.rdlc";
    reportViewer1.LocalReport.DataSources.Clear();
    reportViewer1.LocalReport.DataSources.Add(new 
    Microsoft.Reporting.WinForms.ReportDataSource("DataSet1", dt));
}

请注意，从 GetSPResult 返回的 DataTable 应添加到报告中，而不是像您的代码中那样新创建的空白表.

Note that the DataTable returned from GetSPResult should be added to the report not a newly created blank table as in yourt code.

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