entity-framework - 使用 Entity Framework 的报告服务

Question

我有使用 ado.net 数据集开发报告(SSRS)的经验。现在我正在开发一个不使用 ADO.net 而是 Entity Framework 但 Entity Framework 不返回数据表或数据集的应用程序。我想知道

有没有办法在报告服务中使用 Entity Framework 返回的集合或自定义对象？

Entity Framework 以某种方式返回数据表或数据集。

或者我应该手动从 Entity Framework 返回的集合中创建数据表/数据集。

作为记录，我通过从 Entity Framework 执行存储过程来获取结果集。

Answer 1

public void getMyReportData() 
{ 
     using (myEntityDataModel v = new myEntityDataModel()) 
     {

         var reportQuery = (from r in v.myTable
                               select new
                               {
                                   l.ID,
                                   l.LeaveApplicationDate,
                                   l.EmployeeNumber,
                                   l.EmployeeName,
                                   l.StartDate,
                                   l.Col1,
                                   l.Col2,
                                   .......,
                                   .......,
                                   l.Address
                               }).ToList();

        reportViewer1.LocalReport.DataSources.Clear();
        ReportDataSource datasource = new ReportDataSource("nameOfReportDataset", reportQuery);
        reportViewer1.LocalReport.DataSources.Add(datasource);

        Stream rpt = loadEmbededReportDefinition("Report1.rdlc");
        reportViewer1.LocalReport.LoadReportDefinition(rpt);
        reportViewer1.RefreshReport();

        //Another way of setting the reportViewer report source

        string exeFolder = Path.GetDirectoryName(Application.ExecutablePath);
        string reportPath = Path.Combine(exeFolder, @"rdlcReports\Report1.rdlc");
        reportViewer1.LocalReport.ReportPath = reportPath;

        reportParameter p = new ReportParameter("DeptID", deptID.ToString());
        reportViewer1.LocalReport.SetParameters(new[] { p });

    }
}




public static Stream loadEmbededReportDefinition(string reportName)
    {
        Assembly _assembly = Assembly.GetExecutingAssembly();
        Stream _reportStream = _assembly.GetManifestResourceStream("ProjectNamespace.rdlcReportsFolder." + reportName);

        return _reportStream;
    }

原文出处:Creating Reports in ASP.Net with Entity Framework