Hi Team,
Good Day!
I am using a Standalone Telerik Report and I want to set a new ObjectDataSource from a Dataset during run-time. But even how much I tried the report cannot retrieved or used the new ObjectDataSource that I set during run-time. Below is My Code. Please kindly help assist on which part of my code do i get wrong or is this possible in Telerik Report?
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
Try
Me.Text = CurrReport.FileName
Dim uriReportSource As New Telerik.Reporting.UriReportSource()
uriReportSource.Uri = IO.Path.GetDirectoryName(Diagnostics.Process.GetCurrentProcess().MainModule.FileName) & "\Reports\" & CurrReport.ReportName
ReportViewer1.Cursor = Windows.Forms.Cursors.Default
ReportViewer1.ReportSource = SetUpReportSource(uriReportSource)
ReportViewer1.RefreshReport()
Catch ex As Exception
Glenfield.Common.HandleError(ex)
End Try
End Sub
Public Function SetUpReportSource(sourceReportSource As ReportSource) As ReportSource
Try
Dim uriReportSource = DirectCast(sourceReportSource, UriReportSource)
Dim reportInstance = DeserializeReport(uriReportSource)
ValidateReportSource(uriReportSource.Uri)
Me.SetConnectionString(reportInstance)
Return CreateInstanceReportSource(reportInstance, uriReportSource)
Catch ex As Exception
Glenfield.Common.HandleError(ex)
End Try
End Function
Public Function DeserializeReport(uriReportSource As UriReportSource) As Report
Dim m_Report As Telerik.Reporting.Report = New Telerik.Reporting.Report()
Dim settings = New System.Xml.XmlReaderSettings()
settings.IgnoreWhitespace = True
Try
Using xmlReader = System.Xml.XmlReader.Create(uriReportSource.Uri, settings)
Dim xmlSerializer = New Telerik.Reporting.XmlSerialization.ReportXmlSerializer()
Dim report = DirectCast(xmlSerializer.Deserialize(xmlReader), Telerik.Reporting.Report)
m_Report = report
Return m_Report
End Using
Catch ex As Exception
Glenfield.Common.HandleError(ex)
End Try
End Function
Public Sub ValidateReportSource(value As String)
Try
If value.Trim().StartsWith("=") Then
Throw New InvalidOperationException("Expressions for ReportSource are not supported when changing the connection string dynamically")
End If
Catch ex As Exception
Glenfield.Common.HandleError(ex)
End Try
End Sub
Public Sub SetConnectionString(reportItemBase As ReportItemBase)
Try
Dim objectDataSource As New Telerik.Reporting.ObjectDataSource()
objectDataSource.DataSource = CurrReport.m_CurrDataset
objectDataSource.DataMember = "rptData"
If reportItemBase.Items.Count < 1 Then
Return
End If
If TypeOf reportItemBase Is Report Then
Dim report = DirectCast(reportItemBase, Report)
report.DataSource = objectDataSource
'For Each item As Telerik.Reporting.ReportItemBase In reportItemBase.Items
' 'recursively set the connection string to the items from the Items collection
' SetConnectionString(item)
' 'set the drillthrough report connection strings
' Dim drillThroughAction = TryCast(item.Action, NavigateToReportAction)
' If drillThroughAction IsNot Nothing Then
' Dim updatedReportInstance = Me.SetUpReportSource(drillThroughAction.ReportSource)
' drillThroughAction.ReportSource = updatedReportInstance
' End If
' 'Covers all data items(Crosstab, Table, List, Graph, Map and Chart)
' If TypeOf item Is DataItem Then
' Dim dataItem = DirectCast(item, DataItem)
' dataItem.DataSource = objectDataSource
' Continue For
' End If
'Next
For Each WkFItem As Microsoft.Reporting.WinForms.ReportParameter In CurrReport.ReportParameters
If report.ReportParameters.Contains(WkFItem.Name) Then
report.ReportParameters(WkFItem.Name).Value = WkFItem.Values(0)
End If
Next
report.PageSettings.PaperKind = System.Drawing.Printing.PaperKind.Custom
report.PageSettings.Margins.Left = New Unit(0.25, UnitType.Inch)
report.PageSettings.Margins.Right = New Unit(0.25, UnitType.Inch)
report.PageSettings.Margins.Top = New Unit(0.25, UnitType.Inch)
report.PageSettings.Margins.Bottom = New Unit(0.25, UnitType.Inch)
If Glenfield.Globals.PaperSize = PrintPaperSize.Letter Then
If CurrReport.Orientation = PrintOrientation.Portrait Then
report.PageSettings.PaperSize = New SizeU(New Unit(11, UnitType.Inch), New Unit(8.5, UnitType.Inch))
Else
report.PageSettings.PaperSize = New SizeU(New Unit(8.5, UnitType.Inch), New Unit(11, UnitType.Inch))
End If
report.PageSettings.PaperKind = PaperKind.Letter
Else
If CurrReport.Orientation = PrintOrientation.Portrait Then
report.PageSettings.PaperSize = New SizeU(New Unit(11.69, UnitType.Inch), New Unit(8.25, UnitType.Inch))
Else
report.PageSettings.PaperSize = New SizeU(New Unit(8.25, UnitType.Inch), New Unit(11.69, UnitType.Inch))
End If
report.PageSettings.PaperKind = PaperKind.A4
End If
End If
Catch ex As Exception
Glenfield.Common.HandleError(ex)
End Try
End Sub
Private Function CreateInstanceReportSource(report As IReportDocument, originalReportSource As ReportSource) As ReportSource
Dim instanceReportSource = New InstanceReportSource() With { _
.ReportDocument = report _
}
Try
instanceReportSource.Parameters.AddRange(originalReportSource.Parameters)
Catch ex As Exception
Glenfield.Common.HandleError(ex)
End Try
Return instanceReportSource
End Function
1 Answer, 1 is accepted
In the SetConnectionString method you are creating an ObjectDataSource object that wraps already instantiated data object. Thus you can skip the wrapping in a data source component and directly set the report's DataSource to the created data object:
report.DataSource = CurrReport.m_CurrDataset.Tables("rptData")DirectCast(report.Items.Find("table1", True)(0),Telerik.Reporting.Table).DataSource = GetDataHere()In the same SetConnectionString method you are transferring report parameters values from other non-Telerik object, which lines may introduce issues if you are adding the same parameter's key(name) twice in the CreateInstanceReportSource method.
If you need further help, please elaborate on the issue occurring on running the code.
Regards,
Stef
Telerik