在Aspnet Core中将RDLC呈现为PDF或Excel

public IActionResult ExportReport()
{
    // 创建ReportViewer实例
    var reportViewer = new ReportViewer();

    // 设置RDLC文件路径
    reportViewer.LocalReport.ReportPath = "Path/To/Your/Report.rdlc";

    // 设置报表数据源
    var dataSource = new ReportDataSource("DataSourceName", GetReportData());
    reportViewer.LocalReport.DataSources.Add(dataSource);

    // 设置报表输出格式为PDF
    var reportType = "PDF";
    string mimeType;
    string encoding;
    string fileNameExtension;

    // 渲染报表
    var renderedBytes = reportViewer.LocalReport.Render(reportType, null, out mimeType, out encoding, out fileNameExtension);

    // 返回生成的PDF文件
    return File(renderedBytes, mimeType, "Report.pdf");
}