ReportViewer 500 - Internal server error.

Posted on 2009-07-15
Last Modified: 2012-06-27

I have setup a reportviewer on a webform.  It worked fine before I tried using IReportServerCredentials, it just prompted me for a username/password.  Now after implementing the credentials I keep getting a 500 error.  What am I doing wrong?
Imports System.Data

Imports System.Web

Imports System.Web.UI

Imports Microsoft.Reporting.Webforms

Imports System

Imports System.Net

Imports System.Configuration

Imports System.Collections

Imports System.Web.Security

Imports System.Security.Principal

Imports System.Web.UI.WebControls

Imports System.Web.UI.WebControls.WebParts

Imports System.Web.UI.HtmlControls



Public Class GM

    Inherits System.Web.UI.Page

    Friend WithEvents SqlConnection As System.Data.SqlClient.SqlConnection

    Friend WithEvents SqlCommand As System.Data.SqlClient.SqlCommand

    Public strclientid As String = "" & HttpContext.Current.Request.Cookies("clientid").Value & "/"


    Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

        ReportViewer1.ServerReport.ReportServerUrl = New System.Uri("")

        ReportViewer1.ServerReport.ReportPath = HttpContext.Current.Request.Cookies("clientid").Value & "/execrecap&rs:Command=Render"

        ReportViewer1.ShowCredentialPrompts = False

        ReportViewer1.ServerReport.ReportServerCredentials = New MyReportServerCredentials()


        If Not Page.IsPostBack Then

            Dim Menu1 As Menu

            Menu1 = Me.Menu1

            Dim value As MenuItemBindingCollection

            value = Menu1.DataBindings


            'menu setup here

            End If

    End Sub

End Class

Public NotInheritable Class MyReportServerCredentials

    Implements IReportServerCredentials


    Public ReadOnly Property ImpersonationUser() As WindowsIdentity _

            Implements IReportServerCredentials.ImpersonationUser



            'Use the default windows user.  Credentials will be

            'provided by the NetworkCredentials property.

            Return Nothing


        End Get

    End Property


    Public ReadOnly Property NetworkCredentials() As ICredentials _

            Implements IReportServerCredentials.NetworkCredentials



            'Read the user information from the web.config file.  

            'By reading the information on demand instead of storing 

            'it, the credentials will not be stored in session, 

            'reducing the vulnerable surface area to the web.config 

            'file, which can be secured with an ACL.


            'User name

            Dim userName As String = _



            If (String.IsNullOrEmpty(userName)) Then

                Throw New Exception("Missing user name from web.config file")

            End If



            Dim password As String = _



            If (String.IsNullOrEmpty(password)) Then

                Throw New Exception("Missing password from web.config file")

            End If



            Dim domain As String = _



            If (String.IsNullOrEmpty(domain)) Then

                Throw New Exception("Missing domain from web.config file")

            End If


            Return New NetworkCredential(userName, password, domain)


        End Get

    End Property


    Public Function GetFormsCredentials(ByRef authCookie As Cookie, _

                                   ByRef userName As String, _

                                   ByRef password As String, _

                                   ByRef authority As String) _

                                   As Boolean _

       Implements IReportServerCredentials.GetFormsCredentials


        authCookie = Nothing

        userName = Nothing

        password = Nothing

        authority = Nothing


        'Not using form credentials

        Return False


    End Function

End Class

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Question by:jay-are
  • 2
LVL 83

Expert Comment

ID: 24859262
Set the debug=true and disable the customerror pages in the web.config file to see where the problem is.

Author Comment

ID: 24859310
Yeah debug is set to true and customErrors mode = off.  Not sure why I'm not seeing an actual error.

Accepted Solution

dotnetchick earned 500 total points
ID: 24874660
I believe in order for the report viewer control to function correctly, in the ReportServerUrl, you need to specify the path to the report server.  Then for ReportPath you need to give the directory structure and report name as the report it setup.
ReportViewer1.ServerReport.ReportServerUrl = New System.Uri("")

ReportViewer1.ServerReport.ReportPath = "Directory1/ReportName"

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Author Comment

ID: 24883438
I've got that exact setup now.  Ok so I had to go into the appsettings in IIS for that specific program and change it from version 3.5 back to "classic" or 2.0 to get the page to even load.  Now it loads fine but I don't get a reportviewer.  Just a blank iframe...

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