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我已将存储过程参数化为 Crystal Report 的源。我试图从 Code C# 后面传递它们。

我提到了很多主题，但仍然遗漏了一些东西，并且出现了错误：

Failed to open a rowset. Details: ADO Error Code: 0x Source: Microsoft SQL Native Client Description: Procedure 'SP_GetProductsbySales' expects parameter '@top', which was not supplied. SQL State: 42000 Native Error: Failed to open a rowset. Error in File C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp\TopSelling_Report {B8B4EAE6-D01E-4D18-9003-23A047F9DD5B}.rpt: Failed to open a rowset

这是我的代码：

 private void ConfigureCrystalReports()
{
    rpt = new ReportDocument();

    string reportPath = Server.MapPath("TopSelling_Report.rpt");

    CrystalReportViewer1.ParameterFieldInfo.Clear();
    ParameterFields param = CrystalReportViewer1.ParameterFieldInfo;
    ParameterField top = new ParameterField();
    top.Name = "@top";
    ParameterDiscreteValue top_val = new ParameterDiscreteValue();
    top_val.Value = 100;
    top.CurrentValues.Add(top_val);

    ParameterField all = new ParameterField();
    all.Name = "@all";
    ParameterDiscreteValue all_val = new ParameterDiscreteValue();
    all_val.Value = false;
    all.CurrentValues.Add(all_val);

    param.Add(top);
    param.Add(all);
    CrystalReportViewer1.ParameterFieldInfo = param;


    rpt.Load(reportPath);
    rpt.SetParameterValue(0, Convert.ToInt32(50));
    rpt.SetParameterValue(1, Convert.ToBoolean(false));


    ConnectionInfo connectionInfo = new ConnectionInfo();
    connectionInfo.ServerName = "xxxx";
    connectionInfo.DatabaseName = "xxxxx";
    connectionInfo.UserID = "xxx";
    connectionInfo.Password = "xxxx";
    SetDBLogonForReport(connectionInfo, rpt);
    CrystalReportViewer1.ReportSource = rpt;
}
private void SetDBLogonForReport(ConnectionInfo connectionInfo, ReportDocument reportDocument)
{
    Tables tables = reportDocument.Database.Tables;
    foreach (CrystalDecisions.CrystalReports.Engine.Table table in tables)
    {
        TableLogOnInfo tableLogonInfo = table.LogOnInfo;
        tableLogonInfo.ConnectionInfo = connectionInfo;
        table.ApplyLogOnInfo(tableLogonInfo);
    }
}

如您所见，我尝试以两种方式传递参数，但仍然出现错误。我发现了特定问题，如果我删除SetDBLogonForReport()方法，那么它工作正常。所以，如果我删除自动登录，那么它工作正常，但如果我保持原样或修改那个的代码，那么它会给出高于错误。

我尝试用 SetDatabaseLogon() 方法替换我的代码，但它仍然给了我不期望的登录提示。

我正在使用 Visual Studio 2005。感谢您的帮助。谢谢。

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