Question

我正在使用Asp.net MVC 4。

我有这个片段：

var data = // fill my data.
var rds = new ReportDataSource("MyDataset", data);

var viewer = new ReportViewer();

viewer.LocalReport.Refresh();
viewer.LocalReport.DataSources.Clear();
viewer.LocalReport.DataSources.Add(rds);
viewer.LocalReport.ReportPath = @"Reports/Report1.rdlc";

string mimeType, encoding, extension;
string[] streamids;
Warning[] warnings;

var buffer = viewer.ServerReport.Render("PDF", "C:", out mimeType, out encoding, out extension, out streamids, out warnings);

但方法Render抛出异常：

Microsoft.Reporting.WebForms.MissingReportSourceException ：尚未指定报告定义的来源。

我正在搜索并找到：this 1，this 2，this 3和其他人。

我尝试使用这些链接：

尝试1：

viewer.LocalReport.ReportPath = @"../Reports/Report1.rdlc";

尝试2：

viewer.LocalReport.ReportPath = @"../../Reports/Report1.rdlc";

尝试3：

viewer.LocalReport.ReportPath = @"~/Reports/Report1.rdlc";

尝试4：

viewer.LocalReport.ReportPath = Server.MapPath(@"~/Reports/Report1.rdlc");

尝试5：

var fileName = Server.MapPath(@"~/Reports/Report1.rdlc");
using (var fs = new FileStream(fileName, FileMode.Open, FileAccess.Read))
{
    viewer.LocalReport.LoadReportDefinition(fs);
}

然而，所有这些尝试都会引发相同的异常。

任何人都有一些想法？我有几个小时试图让它发挥作用。

Answer 1

请确保您在使用

时使用过以下任一项

reportViewer1.LocalReport.ReportPath = @"path/reportName.rdlc"

报告位于调试或发布的bin文件夹以外的

场景

或者您可以使用

reportViewer1.LocalReport.ReportPath = @"reportName.rdlc"

当它在application.StartupPath

时

Answer 2

试试这个：

var data = // fill my data.
var rds = new ReportDataSource("MyDataset", data);

var viewer = new ReportViewer();

viewer.LocalReport.Refresh();
viewer.LocalReport.DataSources.Clear();
viewer.LocalReport.DataSources.Add(rds);




            string fileName=  "Reports/Report1.rdlc";

        FileStream S = new FileStream(Server.MapPath(fileName), FileMode.Open);
        viewer.LocalReport.LoadReportDefinition(S);
        S.Close();

string mimeType, encoding, extension;
string[] streamids;
Warning[] warnings;

var buffer = viewer.ServerReport.Render("PDF", "C:", out mimeType, out encoding, out extension, out streamids, out warnings);

尚未指定报告定义的来源3

2 个答案: