Run crestal report whith sub report in vb.net 2005

i use crestal report xi & vb.net & database ms sql server 2000

when i need to run the report from vb.net i use this code

Code:

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Sub vrep(ByVal vsql As String, ByVal vname As String)

        Cn.Execute("Drop View " & vname)
        Cn.Execute("Create View " & vname & " as " & vsql)

        Dim sql As String = vsql
        Dim da As New SqlClient.SqlDataAdapter(sql, Col)

        Dim ds As New DataSet
        Dim FrmCrystalReport As New FrmPrivew

        Dim CrystalReport As New report filse

        ds.Clear()
        da.Fill(ds, vname)
        CrystalReport.Database.Tables(0).SetDataSource(ds)
       
        FrmCrystalReport.CrystalReportViewer1.ReportSource = CrystalReport
        FrmCrystalReport.Show()

    End Sub

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and its ok

but now i make report contains a subreport plz help me to Modified the code
Because the report in this case contains two reports and two queries

And when i used the previous code does not update the data in the subreport

The next is a general sample, you could check just the subreports part...

The following code shows how to load Crystal Reports in VB.NET, solving all the issues of logon, including sub reports and parameter passing.
You can view your reports by simply calling the required functions with its parameters.

Using this code in your application is very simple.
In the first step you need to add a form, and name it frmViewReport, then place the Crystal Report Viewer control on the form and name it rptViewer.
In the code section, simply paste the following function.
You can call this function from anywhere in your application with reference to the frmViewReport form.
The sample code for calling the function is given below:

Code:

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        Dim objForm As New frmViewReport
        objForm.ViewReport("C:\test.rtp", , "@parameter1=test¶mter2=10")
        objForm.show()

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Now let me explain you in detail what is going on in the code and what the format of the parameter string is.
If there are parameters in the Crystal Reports then they should be passed with their values to the param of the function.
The parameter string should be in the following format:

<First Parameter Name>=<First Paramter Value>&
<Second Parameter Name>=<Second Paramter Value>..

Note the parameter name and its value pairs are separated by an '&'.
The report name with its full path should be passed to sReportName function.

Following is the function code with comments.

Code:

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Friend Function ViewReport(ByVal sReportName As String, Optional ByVal sSelectionFormula As String = "", Optional ByVal param As String = "") As Boolean

    'Declaring variables
    Dim intCounter  As Integer
    Dim intCounter1  As Integer
    Dim strTableName As String
    Dim objReportsParameters As frmReportsParameters

    'Crystal Report's report document object
    Dim objReport As New rystalDecisions.CrystalReports.Engine.ReportDocument

    Dim mySection  As CrystalDecisions.CrystalReports.Engine.Section
    Dim mySections As CrystalDecisions.CrystalReports.Engine.Sections

    'object of table Log on info of Crystal report
    Dim ConInfo As New CrystalDecisions.Shared.TableLogOnInfo

    'Parameter value object of crystal report
    ' parameters used for adding the value to parameter.
    Dim paraValue As New CrystalDecisions.Shared.ParameterDiscreteValue

    'Current parameter value object(collection) of crystal report parameters.
    Dim currValue As CrystalDecisions.Shared.ParameterValues

    'Sub report object of crystal report.
    Dim SubRptO As CrystalDecisions.CrystalReports.Engine.SubreportObject

    'Sub report document of crystal report.
    Dim SubRptD As New CrystalDecisions.CrystalReports.Engine.ReportDocument
   
    Dim strParamenters As String
    Dim strParValPair() As String
    Dim strVal() As String
    Dim sFileName As String
    Dim index As Integer

    Try

        'Load the report
        sFileName = DownloadReport(sReportName, m_strReportDir)
        objReport.Load(sFileName)

        'Check if there are parameters or not in report.
        'As parameter fields collection also picks the selection formula
        ' which is not the parameter so if total parameter count is 1
        ' then we check whether its a parameter or selection formula.
        intCounter = objReport.DataDefinition.ParameterFields.Count
        If intCounter = 1 Then
            If InStr(objReport.DataDefinition.ParameterFields(0).ParameterFieldName, ".", CompareMethod.Text) > 0 Then
                intCounter = 0
            End If
        End If

        'If there are parameters in report and user has passed them then
        ' split the parameter string and Apply the values to their concurrent parameters.
        If intCounter > 0 And Trim(param) <> "" Then
            strParValPair = strParamenters.Split("&")
            For index = 0 To UBound(strParValPair)
                If InStr(strParValPair(index), "=") > 0 Then
                    strVal = strParValPair(index).Split("=")
                    paraValue.Value = strVal(1)
                    currValue = objReport.DataDefinition.ParameterFields(strVal(0)).CurrentValues
                    currValue.Add(paraValue)
                        objReport.DataDefinition.ParameterFields(strVal(0)).ApplyCurrentValues(currValue)
                End If
            Next
        End If

      'Set the connection information to ConInfo object so that we can apply the
      ' connection information on each table in the report
        ConInfo.ConnectionInfo.UserID = objDataBase.UserName
        ConInfo.ConnectionInfo.Password = objDataBase.Password
        ConInfo.ConnectionInfo.ServerName = objDataBase.Server
        ConInfo.ConnectionInfo.DatabaseName = objDataBase.Database

        For intCounter = 0 To objReport.Database.Tables.Count - 1
            objReport.Database.Tables(intCounter).ApplyLogOnInfo(ConInfo)
        Next

        'Loop through each section on the report then look through each object
        ' in the section if the object is a subreport, then apply logon info
        ' on each table of that sub report
        For index = 0 To objReport.ReportDefinition.Sections.Count - 1
            For intCounter = 0 To objReport.ReportDefinition.Sections(index).ReportObjects.Count - 1
                With objReport.ReportDefinition.Sections(index)
                    If .ReportObjects(intCounter).Kind = CrystalDecisions.Shared.ReportObjectKind.SubreportObject Then
                        SubRptO = CType(.ReportObjects(intCounter), CrystalDecisions.CrystalReports.Engine.SubreportObject)
                        SubRptD = SubRptO.OpenSubreport(SubRptO.SubreportName)
                        For intCounter1 = 0 To SubRptD.Database.Tables.Count - 1
                            SubRptD.Database.Tables(intCounter1).ApplyLogOnInfo(ConInfo)
                        Next
                    End If
                End With
            Next
        Next

      'If there is a selection formula passed to this function then use that
        If sSelectionFormula.Length > 0 Then
            objReport.RecordSelectionFormula = sSelectionFormula
        End If

        'Re setting control
        rptViewer.ReportSource = Nothing

        'Set the current report object to report.
        rptViewer.ReportSource = objReport

        'Show the report
        rptViewer.Show()

        Application.DoEvents()

        Me.Text = sReportName
        MyBase.Visible = True
        Me.BringToFront()

        Return True

        Catch ex As System.Exception
            MsgBox(ex.Message)
    End Try

End Function

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JG

I ran across this searching the forum for something in a CR I'm working on. Other than a typo and a couple missing declarations (VB 2008) it is an excellent example. Kudos to jggtz. We will be using it here at our shop. Thanks! jggtz

How can i pass the numeric value as a parameter

Quote:

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Originally Posted by asm

How can i pass the numeric value as a parameter

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Using this example I pass numerics without issues. Is it failing somehow?

I have made a report using sql store procedure directly where procedure requires three parameter .. one is numeric and two are string.
In CR it show correctly but when i call it in vb 2005 using same type of function for calling report... CR want parameter value?
I do't understand why?

It sounds like you are not actually overriding the parameters in the CR from VB and CR is asking for them. Is the connection in the CR using a DSN?

The above sample show how to pass parameters to a CR report that has parameters
In your case you need to pass parameters values to the Stored Procedure in order to execute it and after that pass the returned dataset to CR

The next link show a sample, follow it --> http://www.macronimous.com/resources...and_VB.NET.asp
or google it --> http://www.google.com.mx/search?hl=e...meta=&aq=f&oq=

not using dsn connection