>Hi,
>
>I'm trying deploy a WPF application which uses the Windows Report Viewer. My application crashes every time I try to display the report.
>
>This is the error that shows up in the Event Viewer:
>
>"Event Type: Error
>Event Source: IBC Express Billing System
>Event Category: None
>Event ID: 0
>Date: 2/13/2013
>Time: 9:44:05 AM
>User: N/A
>Computer: CUSTOMS
>Description:
>Dispatcher processing has been suspended, but messages are still being processed.
>Source: WindowsBase
>Target Site: IntPtr WndProcHook(IntPtr, Int32, IntPtr, IntPtr, Boolean ByRef)
>Stack Trace: at System.Windows.Threading.Dispatcher.WndProcHook(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
> at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
> at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
> at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
> at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)
>
>
>For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp."
>
>This is my code:
>
>

>using System;
>using System.Collections.Generic;
>using System.Linq;
>using System.Text;
>using System.Windows;
>using System.Windows.Controls;
>using System.Windows.Data;
>using System.Windows.Documents;
>using System.Windows.Input;
>using System.Windows.Media;
>using System.Windows.Media.Imaging;
>using System.Windows.Shapes;
>using System.IO;
>using OakLeaf.MM.Main.WPF;
>
>namespace SamaanSystems.IBC.WPF
>{
>    /// <summary>
>    /// Interaction logic for ReportViewer.xaml
>    /// </summary>
>    public partial class InvoiceWithDetailReportViewer : ABusinessWindow
>    {
>        private string manifestNumbers;
>
>        public InvoiceWithDetailReportViewer(string ManifestNumbers)
>        {
>            this.manifestNumbers = ManifestNumbers;
>            InitializeComponent();
>            _reportViewer.Load += ReportViewer_Load;
>        }
>
>        private bool _isReportViewerLoaded;
>
>        private void ReportViewer_Load(object sender, EventArgs e)
>        {
>            if (!_isReportViewerLoaded)
>            {
>                if (File.Exists("./Reports/InvoiceReport.rdlc"))
>                {
>                    Microsoft.Reporting.WinForms.ReportDataSource reportDataSource1 = new Microsoft.Reporting.WinForms.ReportDataSource();
>                    InvoiceReportDataSet dataset = new InvoiceReportDataSet();
>                    dataset.BeginInit();
>                    reportDataSource1.Name = "DataSet1";
>
>                    reportDataSource1.Value = dataset.InvoicesSelectByManifestNumber;
>                    this._reportViewer.LocalReport.DataSources.Add(reportDataSource1);
>
>
>                    this._reportViewer.LocalReport.ReportPath = "./Reports/InvoiceReport.rdlc";
>                    dataset.EndInit();
>
>                    InvoiceReportDataSetTableAdapters.InvoicesSelectByManifestNumberTableAdapter invoiceTableAdapter = new InvoiceReportDataSetTableAdapters.InvoicesSelectByManifestNumberTableAdapter();
>
>                    invoiceTableAdapter.ClearBeforeFill = true;
>                    invoiceTableAdapter.Fill(dataset.InvoicesSelectByManifestNumber, this.manifestNumbers);
>
>                    _reportViewer.RefreshReport();
>                    _isReportViewerLoaded = true;
>
>                }
>            }
>        }
>    }
>}
>

>
>I have a feeling it has got something to do with the rdlc file not being found, but that's just a hunch, no scientific basis.
>
>I do have the report in a folder caled Reposrt below the folder where my exe resides, so it should be found.
>
>Can anyone help me solve this puzzle, please?

I know nothing about Windows Report Viewer but this looks like a WPF /Dispatcher problem. How is the method called? If, as it looks, it is from a UI Event that *may* be a problem. IIRC using Dispatcher.BeginInvoke() might help - but I'm afraid that's only a vague recollection of this type of problem.....

Update: this seems to confirm :http://social.msdn.microsoft.com/forums/en-US/wpf/thread/44962927-006e-4629-9aa3-100357861442