本地报表处理时出错-C# Windows Form VS2010

Question

我正在尝试在客户端模式下使用 SQL Server Reporting Services，但出现问题。 我在数据库“IEPL_Attendance_DB”中有两个表： Employee(EmployeeID,EmployeeName) 和 EmployeeTimeIn(EID,Time_In,Date_Ref,StateFlag) 我想以 Windows 窗体（Visual Studio 2010 中的 C#）显示报告。报告应该是以下查询的结果：

select e1.EID,e.EmployeeName,convert(varchar(5),SUM(e1.HoursConsumed)/3600)+':'+convert(varchar(5),SUM(e1.HoursConsumed)%3600/60)+':'+convert(varchar(5),(SUM(e1.HoursConsumed)%60)) as workingtime, CONVERT(VARCHAR(10),e1.Date_Ref,111) as Date_Ref
from Employee as e, EmployeeTimeIn as e1
where e.EmployeeID = e1.EID
group by e1.Date_Ref,e1.EID,e.EmployeeName;

我找到了这篇文章：http://arcanecode.com/2009/03/23/using-sql-server-reporting-services-in-client-mode/，它解释了创建报告的分步过程，但是当我运行我的项目时，我在报告窗口中看到以下错误：
尚未为数据源 EmployeeAttendanceReport 提供数据源实例

这是我的代码：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
//Add these to the standard list above
using System.Data.Sql;
using System.Data.SqlClient;
using Microsoft.Reporting.WinForms;

namespace EmployeeManager
{
public partial class Form1 : Form
{

    public Form1()
    {
        InitializeComponent();
    }

    private void Form1_Load(object sender, EventArgs e)
    {

        //this.reportViewer1.RefreshReport();

        // Set the processing mode for the ReportViewer to Local
        reportViewer1.ProcessingMode = ProcessingMode.Local;

        LocalReport localReport = reportViewer1.LocalReport;
        localReport.ReportPath = @"F:\Muhammad Anees\Time In\WpfApplication1\EmployeeManager\AttendanceReport.rdlc";

        DataSet dataset = new DataSet("EmployeeAttendanceReport");

        // Get the sales order data
        GetCustomerOrders(ref dataset);

        // Create a report data source for the sales order data
        ReportDataSource dsCustomers = new ReportDataSource();
        dsCustomers.Name = "EmployeeAttendanceReport_EmployeeAttendanceReport";
        dsCustomers.Value = dataset.Tables["Employee"];

        localReport.DataSources.Add(dsCustomers);

        // Refresh the report
        reportViewer1.RefreshReport();
    }

    private void GetCustomerOrders(ref DataSet dsNorthwind)
    {
        string sqlCustomerOrders = "SELECT e1.EID"
          + " ,e.EmployeeName"
          + " ,CONVERT(VARCHAR(10),e1.Date_Ref,111) as Date_Ref"
          + " ,convert(varchar(5),SUM(e1.HoursConsumed)/3600)+':'+convert(varchar(5),SUM(e1.HoursConsumed)%3600/60)+':'+convert(varchar(5),(SUM(e1.HoursConsumed)%60)) as workingtime"
          + "  FROM Employee as e, EmployeeTimeIn as e1"
          + "  WHERE e.EmployeeID=e1.EID"
          + "  GROUP BY e1.Date_Ref,e1.EID,e.EmployeeName";

        SqlConnection connection = new
          SqlConnection("Data Source=AZEEMPC; " +
                        "Initial Catalog=IEPL_Attendance_DB; " +
                        "Trusted_Connection = true;");

        SqlCommand command =
            new SqlCommand(sqlCustomerOrders, connection);

        SqlDataAdapter EmployeeAttendanceReportAdapter = new
            SqlDataAdapter(command);

        EmployeeAttendanceReportAdapter.Fill(dsNorthwind, "EmployeeAttendanceReport");

    }
}
}

注意事项：
1. SQL 查询工作正常，我可以在 sql server management studio 中看到此查询的输出。
2.DataSet的属性如下：

请指教！

Answer 1

我知道这已经晚了两年，但我希望这可以帮助其他人

我遇到了同样的问题（本地报告处理过程中发生错误。报告处理过程中发生错误。DatasetName）我发现连接字符串有问题；我不得不从使用 windows 身份验证切换到 sql 身份验证，然后我的报告才起作用。

显然，报表数据源名称必须与您通过 ReportDataSource 对象提供的名称匹配，正如 Brian Knight 建议的那样

Answer 2

您的报告数据源名称与您在 ReportDataSource 类的 Name 属性中提供的名称似乎不匹配。该报告需要 EmployeeAttendanceReport。您可能想尝试将代码中的 Name 属性设置更改为：

dsCustomers.Name = "EmployeeAttendanceReport";