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Reporting Services SQL Server Reporting Services. Please specify which version.
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Old November 15th, 2005, 10:01 PM
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Default Drill down issues

I have a report with a drill down(User List with drill down on User Roles). I render a report programmatically using ReportingService.Render method with HTML4.0 format.

Problem is everytime a user view a report on the ASP.NET UI,it prompts the user credentials screen and the status bar says its downloading an Image. After analysis, I found that the image being downloaded for rendering was the TogglePlus and ToggleMinus icon for drilldown.

How can I display it without the annoying user credentials screen,because we don't want to give end users the credentials being use in the reporting server.

Aldwin Enriquez
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Old November 19th, 2005, 06:45 AM
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Drill-down is difficult to implement with programmatic rendering. Aside from the image streaming issue, the drill-down links will produce Get requests. I'm afraid I don't have an easy answer but it's best to use URL rendering for reports with graphics, drill-down and drill-through features. You can also use the ReportViewer control in RS2005 and SharePoint in RS2000. If you need to use programmatic rendering, use the webarchive or PDF formats. For HTML rendering, any images (including the plus sign icons) must be managed as separate Stream objects in your code. You can write these out to files in your local file system so they'll be picked-up by IE when the report is viewed. Although there may be easier ways to solve this problem, the following ASP.NET web form code manages both rendering and writing the images to files in a folder called report_images under the current web folder:

        Dim rs As New ReportServer_ReportService.ReportingService
        Dim cred As New System.Net.NetworkCredential(sReportUserID, sReportPassword)
        Dim creds As New System.Net.CredentialCache
        creds.Add(New Uri(rpt.SavedReportWebServiceURI), "NTLM", cred)
        rs.Credentials = cred

        Dim sDevInfo As String = "<DeviceInfo><StreamRoot>/report_images/</StreamRoot></DeviceInfo>"

        Dim sStreamIDs() As String
        Dim sStreamID As String

        Dim ReportBytes As Byte()
        Dim ImageBytes As Byte()
        ReportBytes = rs.Render(Session.Item("ReportName"), _
                            Session.Item("RenderFormat"), _
                            Nothing, sDevInfo, _
                            Session.Item("ParamValues"), _
                            Nothing, Nothing, Nothing, Nothing, Nothing, Nothing, sStreamIDs)

        For Each sStreamID In sStreamIDs
            ImageBytes = rs.RenderStream(Session.Item("ReportName"), Session.Item("RenderFormat"), sStreamID, Nothing, Nothing, Session.Item("ParamValues"), Nothing, Nothing)
            Dim stream As System.IO.FileStream = System.IO.File.OpenWrite(Server.MapPath("/report_images/") & sStreamID)

            stream.Write(ImageBytes, 0, CInt(ImageBytes.Length))

        With HttpContext.Current.Response
        End With

Paul Turley, MCSD, MCDBA, MCT, MSF Practitioner
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Old February 15th, 2006, 08:26 AM
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Thanks a lot Paul

Aldwin Enriquez
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Old March 3rd, 2006, 02:36 AM
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Paul you're a wrock star.

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