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Printing with ASP.Net hosted on IIS 7.0

Hello Experts,
I am using ASP.NET /VB.Net web application.

I am trying to print the report, it work locally when tested from visual studio 2010... but not from the Server when deployed to IIS.

I tried different options, it is not finding the printer when the application deployed to IIS on the Network server...

here is some snippet I used with no luck...

 Private Function DefaultPrinterName() As String
        Dim settings As Drawing.Printing.PrinterSettings = New Drawing.Printing.PrinterSettings()
        Return settings.PrinterName
    End Function

 Private Sub Print()
        If m_streams Is Nothing OrElse m_streams.Count = 0 Then
            Throw New Exception("Error: no stream to print.")
        End If
        Dim printDoc As New PrintDocument()
        printDoc.PrinterSettings.PrinterName = DefaultPrinterName()
        AddHandler printDoc.PrintPage, AddressOf PrintPage
        m_currentPageIndex = 0

    End Sub

any idea?

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1 Solution
mani_saiAuthor Commented:
From the event log, it is not finding the printer

Here is error I see from event log on the server:

Event code: 3005
Event message: An unhandled exception has occurred.
Event time: 3/25/2015 12:28:08 PM
Event time (UTC): 3/25/2015 5:28:08 PM
Event ID: aabdefc27938450d876f3271cd3481d0
Event sequence: 42
Event occurrence: 1
Event detail code: 0
Application information:
    Application domain: /LM/W3SVC/2/ROOT-3-130717780815649192
    Trust level: Full
    Application Virtual Path: /
    Application Path: C:\ReqTracker\
    Machine name: CPSTAGING
Process information:
    Process ID: 4416
    Process name: w3wp.exe
    Account name: IIS APPPOOL\ReqTrackerStaging
Exception information:
    Exception type: InvalidPrinterException
    Exception message: No printers are installed.
   at PrintObject.PrintReport(Int32 reqId)
   at Requisitions.btnBatchPrint_Click(Object sender, EventArgs e)
   at System.Web.UI.WebControls.Button.OnClick(EventArgs e)
   at System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument)
   at System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument)
   at System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument)
   at System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData)
   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
Robberbaron (robr)Commented:
the code is running on the server, so it is only able to access printer defined on the server.

thats why most apps provide a 'preview' open that the user prints locally.
mani_saiAuthor Commented:
i am seeing the network printer installed on the server.

When I logged in , the print function work.  If I am not logged in to the server , it is not working

Any idea?

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mani_saiAuthor Commented:
I need a sample code(VB.Net/ASP.Net) that will print the report in batch..i need to print multiple reports...
Its not a report is it? You are printing rendering text yourself into printer driver. That is more suitable for a windows based application rather than a web application. Have you considered using a report component like crystal reports?
mani_saiAuthor Commented:
I am having a report build like this:

Not able to print when I access the report  outside the server.  it prints locally and also when I logged into the server...but not outside the server...

 Public Sub PrintReport(ByVal reqId As Integer)
        Dim printObject As New PrintObject
        Dim report As New Microsoft.Reporting.WebForms.LocalReport()
        Dim item As Requisition = RequisitionManager.getReqbyReqid(reqId)
            If item.Revised Then
                report.ReportPath = "ReqReportRevised.rdlc"
                report.ReportPath = "ReqReport.rdlc"
            End If
            report.DataSources.Add(New Microsoft.Reporting.WebForms.ReportDataSource("DataSet1_getPartList", printObject.GetPartListReport(reqId)))
            report.DataSources.Add(New Microsoft.Reporting.WebForms.ReportDataSource("DataSet1_getReqbyReqid", printObject.GetReqbyReqId(reqId)))

        Catch ex As Exception
            Throw (ex)
            item = Nothing
            report = Nothing
        End Try

    End Sub
mani_saiAuthor Commented:
remaning   code:

  Private Sub Export(ByVal report As Microsoft.Reporting.WebForms.LocalReport)

        Dim warnings As Microsoft.Reporting.WebForms.Warning() = Nothing
        Dim streamids() As String = Nothing
        Dim mimeType As String = String.Empty
        Dim encoding As String = String.Empty
        Dim extension As String = String.Empty

        Dim _r As Random = New Random
        Dim uniqueNumber As String = _r.Next().ToString()

        Dim bytes() As Byte = report.Render("PDF", Nothing, mimeType, encoding, extension, streamids, warnings)
        Dim fs As FileStream = New FileStream(HttpContext.Current.Server.MapPath("Output_" + uniqueNumber + ".pdf"), FileMode.Create)
        fs.Write(bytes, 0, bytes.Length)

        Dim document As iTextSharp.text.Document = New iTextSharp.text.Document(iTextSharp.text.PageSize.LETTER)
        Dim reader As iTextSharp.text.pdf.PdfReader = New iTextSharp.text.pdf.PdfReader(HttpContext.Current.Server.MapPath("Output_" + uniqueNumber + ".pdf"))
        PrintPDFfiles(HttpContext.Current.Server.MapPath("Output_" + uniqueNumber + ".pdf"))

        document = Nothing
        reader = Nothing

        FileCleanUpOnServer(HttpContext.Current.Server.MapPath("Output_" + uniqueNumber + ".pdf"))
    End Sub

    Private Sub PrintPDFfiles(ByVal fileName As String)
        Dim p As New Process()
        p.StartInfo = New ProcessStartInfo() With {.CreateNoWindow = True, .Verb = "print", .FileName = fileName}
    End Sub
Printers are installed for users. When no user is logged in, there is no printer. What happens if you run your application pool under your own windows account?
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