Reading RPT File Then Display Report as PDF
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Oct 24, 2005
3 min read
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This Article Teach You How To Use External RPT File Rather Than Embedded RPT File (.DLL)
Introduction
When we develop a report for web application, the RPT file usually embedded into an DLL file. So when we want to edit the report, we must recompile the project. This is the simple solution for reading RPT file then displays it as PDF.
Now let’s creating a function to export and display your report into PDF.
Private Function PrintDocument(ByVal SourceReport As Object, ByVal FormatType As CrystalDecisions.Shared.ExportFormatType, ByVal PaperSize As CrystalDecisions.Shared.PaperSize, ByVal PaperOrientation As CrystalDecisions.Shared.PaperOrientation)
'Copyright IMAWA 2005 (Bluechip_Asia@yahoo.com)
'For Educational Purpose Only
'For Explanation of this function, see my previous article
With SourceReport.FormatEngine.PrintOptions
.PaperSize = PaperSize
.PaperOrientation = PaperOrientation
End With
Dim st As System.IO.Stream
Dim b() As Byte
st = SourceReport.ExportToStream(FormatType)
Page.Response.ClearHeaders()
Page.Response.ContentType = "application/pdf"
ReDim b(st.Length)
st.Read(b, 0, CInt(st.Length))
Page.Response.BinaryWrite(b)
Page.Response.End()
End Function
Next, we call the function when page loaded.
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'Copyright IMAWA 2005 (Bluechip_Asia@yahoo.com)
'For Educational Purpose Only
'For Explanation of this function, see my previous article
Dim myRpt As New ReportDocument
myRpt.Site = Me.Site
Try
myRpt.Load(MapPath("../RPTFiles/Training.Rpt"))
PrintDocument(myRpt, CrystalDecisions.[Shared].ExportFormatType.PortableDocFormat, CrystalDecisions.[Shared].PaperSize.PaperLetter, CrystalDecisions.[Shared].PaperOrientation.Portrait)
Catch ex As Exception
Exit Sub
End Try
End Sub
The Complete Source code are :
Imports CrystalDecisions.CrystalReports.Engine
Imports CrystalDecisions.ReportSource
Imports CrystalDecisions.Shared
Public Class ReportTraining
Inherits System.Web.UI.Page
#Region " Web Form Designer Generated Code "
'This call is required by the Web Form Designer.
<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
End Sub
'NOTE: The following placeholder declaration is required by the Web Form Designer.
'Do not delete or move it.
Private designerPlaceholderDeclaration As System.Object
Private Sub Page_Init(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Init
'CODEGEN: This method call is required by the Web Form Designer
'Do not modify it using the code editor.
InitializeComponent()
End Sub
#End Region
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'Put user code to initialize the page here
Dim myRpt As New ReportDocument
myRpt.Site = Me.Site
Try
myRpt.Load(Me.MapPath("../CPXPrint/Training.Rpt"))
PrintDocument(myRpt, CrystalDecisions.[Shared].ExportFormatType.PortableDocFormat, CrystalDecisions.[Shared].PaperSize.PaperLetter, CrystalDecisions.[Shared].PaperOrientation.Portrait)
Catch ex As Exception
Exit Sub
End Try
End Sub
Private Function PrintDocument(ByVal SourceReport As Object, ByVal FormatType As CrystalDecisions.Shared.ExportFormatType, ByVal PaperSize As CrystalDecisions.Shared.PaperSize, ByVal PaperOrientation As CrystalDecisions.Shared.PaperOrientation)
'Copyright IMAWA 2005 (Bluechip_Asia@yahoo.com)
'For Educational Purpose Only
'For Explanation of this function, see my previous article
With SourceReport.FormatEngine.PrintOptions
.PaperSize = PaperSize
.PaperOrientation = PaperOrientation
End With
Dim st As System.IO.Stream
Dim b() As Byte
st = SourceReport.ExportToStream(FormatType)
Page.Response.ClearHeaders()
Page.Response.ContentType = "application/pdf"
ReDim b(st.Length)
st.Read(b, 0, CInt(st.Length))
Page.Response.BinaryWrite(b)
Page.Response.End()
End Function
End Class