Printing Multiple Reports using .NET 2005 and Crystal

I have an application that has a requirement to print multiple reports as one.  It will print one report.  When I add a second report, it will print the first report, then it logs a memory error.  I am thinking that maybe there is a property not set right.  Below is the code, then the error message.  Any help would be greatly apprecialted.  Using .NET 2005 and Crystal XI R2.

Public Class frmPrintJob
    Inherits System.Windows.Forms.Form

    Dim rsr As CrystalActiveXReportViewerLib11_5.ReportSourceRouter = New CrystalActiveXReportViewerLib11_5.ReportSourceRouterClass()
    Dim bPrintCalled As Boolean = False
    Friend WithEvents CrystalViewer As AxCrystalActiveXReportViewerLib11_5.AxCrystalActiveXReportViewer

    Dim last_msg As String = "<>"

#Region " Windows Form Designer generated code "

    Public Sub New()
        MyBase.New()

        'This call is required by the Windows Form Designer.
        InitializeComponent()
        rsr = New CrystalActiveXReportViewerLib11_5.ReportSourceRouterClass
        'Add any initialization after the InitializeComponent() call

    End Sub

    'Form overrides dispose to clean up the component list.
    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing Then
            If Not (components Is Nothing) Then
                components.Dispose()
            End If
        End If
        MyBase.Dispose(disposing)
    End Sub

    'Required by the Windows Form Designer
    Private components As System.ComponentModel.IContainer

    'NOTE: The following procedure is required by the Windows Form Designer
    'It can be modified using the Windows Form Designer.  
    'Do not modify it using the code editor.
    Friend WithEvents txtStatus As System.Windows.Forms.TextBox
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Dim resources As System.ComponentModel.ComponentResourceManager = New System.ComponentModel.ComponentResourceManager(GetType(frmPrintJob))
        Me.txtStatus = New System.Windows.Forms.TextBox
        Me.CrystalViewer = New AxCrystalActiveXReportViewerLib11_5.AxCrystalActiveXReportViewer
        CType(Me.CrystalViewer, System.ComponentModel.ISupportInitialize).BeginInit()
        Me.SuspendLayout()
        '
        'txtStatus
        '
        Me.txtStatus.ForeColor = System.Drawing.Color.Navy
        Me.txtStatus.Location = New System.Drawing.Point(8, 8)
        Me.txtStatus.Multiline = True
        Me.txtStatus.Name = "txtStatus"
        Me.txtStatus.ScrollBars = System.Windows.Forms.ScrollBars.Both
        Me.txtStatus.Size = New System.Drawing.Size(408, 112)
        Me.txtStatus.TabIndex = 2
        Me.txtStatus.Text = "_Status"
        '
        'CrystalViewer
        '
        Me.CrystalViewer.Enabled = True
        Me.CrystalViewer.Location = New System.Drawing.Point(428, 135)
        Me.CrystalViewer.Name = "CrystalViewer"
        Me.CrystalViewer.OcxState = CType(resources.GetObject("CrystalViewer.OcxState"), System.Windows.Forms.AxHost.State)
        Me.CrystalViewer.Size = New System.Drawing.Size(711, 592)
        Me.CrystalViewer.TabIndex = 0
        '
        'frmPrintJob
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
        Me.ClientSize = New System.Drawing.Size(1365, 621)
        Me.ControlBox = False
        Me.Controls.Add(Me.CrystalViewer)
        Me.Controls.Add(Me.txtStatus)
        Me.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle
        Me.MaximizeBox = False
        Me.MinimizeBox = False
        Me.Name = "frmPrintJob"
        Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen
        Me.Text = "Print Statements"
        Me.TopMost = True
        CType(Me.CrystalViewer, System.ComponentModel.ISupportInitialize).EndInit()
        Me.ResumeLayout(False)
        Me.PerformLayout()

    End Sub

#End Region
    Public Sub add_status(ByVal desc As String)
        If last_msg <> desc Then
            txtStatus.AppendText(desc & vbCrLf)
            last_msg = desc
        End If

    End Sub

    <CLSCompliant(False)> Public Sub add_report(ByVal r As CRAXDRT.Report)
        add_status("    Adding - " & r.ReportTitle)
        rsr.AddReport(r)
    End Sub

    Public Sub show_reports()
        CrystalViewer.ReportSource = rsr
        CrystalViewer.RefreshEx(True)
        add_status("Refreshing Data")
        CrystalViewer.ViewReport()

    End Sub


Here is the error message from the log:

4/4/2012 10:48:22 AM EXCEPTION REPORTED
Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
   at System.Windows.Forms.UnsafeNativeMethods.CallWindowProc(IntPtr wndProc, IntPtr hWnd, Int32 msg, IntPtr wParam, IntPtr lParam)
   at System.Windows.Forms.NativeWindow.DefWndProc(Message& m)
   at System.Windows.Forms.Control.DefWndProc(Message& m)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.AxHost.WndProc(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
   at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
   at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)
   at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
   at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
   at System.Windows.Forms.Application.RunDialog(Form form)
   at System.Windows.Forms.Form.ShowDialog(IWin32Window owner)
   at System.Windows.Forms.Form.ShowDialog()
LVL 1
MeeskasAsked:
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mlmccConnect With a Mentor Commented:
It is there for some kind of compatibility.  In further reading, CRAXDDRT is actually used by the .Net IDE to allow you to design reports.


http://www.sdn.sap.com/irj/boc/go/portal/prtroot/docs/library/uuid/e0eb394f-931e-2b10-3b82-9413bfc3f457?QuickLink=index&overridelayout=true&29669634095258

CRAXDRT is included with CR XI so you can use it in VB6 applications.

mlmcc
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vastoCommented:
You are using .NET with Crystal reports COM objects.  I can see "UnsafeNativeMethods" in the provided  error message. Did you try to use managed components instead ?
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MeeskasAuthor Commented:
Not sure what you mean.
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mlmccCommented:
The dll CRAXDRT is a COM dll and is not licensed for use with .Net applications.

You will have to use the .Net viewer and code methods

mlmcc
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MeeskasAuthor Commented:
But I have Crystal XI R2 installed.  Doesn't that license me to use CRAXDRT?
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mlmccCommented:
Yes, with VB6 no longer with .Net.  

mlmcc
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MeeskasAuthor Commented:
Then why is the CRAXDRT dll included in the XI R2 bin?  What are you supposed to use instead?
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MeeskasAuthor Commented:
Thanks for your help and the links to the documentation.  I basically recoded everything to use ReportDocument instead of CRAXDRT and to use only the .NET assemblies.  Everything works now.
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