WPF Viewer

dotnet add package Majorsilence.Reporting.LibRdlWpfViewer

Majorsilence Reporting includes a WPF report viewer. Call RdlEngineConfig.RdlEngineConfigInit() once at application startup, then use SetSourceFile and Rebuild (both async) to load the report.

using Majorsilence.Reporting.Rdl;

class ReportWindow : System.Windows.Window
{
    public ReportWindow()
    {
        Height = 600;
        Width = 800;
        Loaded += async (s, e) => await LoadReportAsync();
    }

    private async Task LoadReportAsync()
    {
        var rdlView = new Majorsilence.Reporting.LibRdlWpfViewer.RdlWpfViewer();
        await rdlView.SetSourceFile(new Uri(@"Path\to\your\report.rdl"));
        await rdlView.Rebuild();
        Content = rdlView;
    }
}

class Program
{
    [STAThread]
    static void Main()
    {
        // One time per app instance
        RdlEngineConfig.RdlEngineConfigInit();

        var app = new System.Windows.Application();
        app.Run(new ReportWindow());
    }
}

---

Version 4 (Legacy — .NET Framework / net48)

class Program
{
    [STAThread]
    static void Main()
    {
        System.Windows.Window frm = new System.Windows.Window();
        frm.Height = 600;
        frm.Width = 800;

        LibRdlWpfViewer.RdlWpfViewer rdlView = new LibRdlWpfViewer.RdlWpfViewer();
        rdlView.SourceFile = new Uri(@"Path\to\your\report.rdl");
        rdlView.Rebuild();

        frm.Content = rdlView;
        System.Windows.Application app = new System.Windows.Application();
        app.Run(frm);
    }
}