Problems During Load Report VB.net

[Francisco Fonseca]

Hi, I have problems in LS SL VB.NET to open embedded reports, I tested with C # and I have no problems but in VB.NET returns error:

{System.ArgumentNullException: Value cannot be null." & vbCrLf & "Parameter name: input" & vbCrLf & "   at System.Xml.XmlReaderSettings.CreateReader(Stream input, Uri baseUri, String baseUriString, XmlParserContext inputContext)" & vbCrLf & "   at System.Xml.XmlReader.Create(Stream input, XmlReaderSettings settings, String baseUri)" & vbCrLf & "   at System.Xml.XmlReader.Create(Stream input)" & vbCrLf & "   at Syncfusion.RDL.Data.ReportModel.LoadReport(Stream fileStream, Boolean internalpass)" & vbCrLf & "   at Syncfusion.RDL.Data.ReportModel.LoadReport(Stream fileStream)" & vbCrLf & "   at Syncfusion.Windows.Reports.Viewer.ReportViewer.LoadReport(Stream fileStream)" & vbCrLf & "   at Syncfusion.LightSwitch.Extension.ReportViewer.Presentation.Controls.ReportViewer.ShowReport()" & vbCrLf & "   at LightSwitchApplication.Reporte._Closure$__1._Lambda$__2()" & vbCrLf & "   at Microsoft.LightSwitch.Threading.ClientGenerated.Internal.MainDispatcher.<>c__DisplayClass2.<BeginInvoke>b__0()}

VB Code:

Private Sub CompanySales_Activated()
    AddHandler Me.FindControl("ScreenContent").ControlAvailable, AddressOf CompanySales_ControlAvailable
End Sub

Private Sub CompanySales_ControlAvailable(sender As Object, e As ControlAvailableEventArgs)
    RemoveHandler Me.FindControl("ScreenContent").ControlAvailable, AddressOf CompanySales_ControlAvailable
    Me.Details.Dispatcher.BeginInvoke(Sub() 
    Dim items As Object = Me.DataWorkspace.ApplicationData.SalesDetailsSet.GetQuery().Execute().Cast(Of Object)().ToList()
    Dispatchers.Main.BeginInvoke(Sub() 
    Dim viewer As ReportViewer = TryCast(e.Control, ReportViewer)
    Dim dataSource As New ReportDataSource("Sales", items)
    viewer.DataSources = New List(Of ReportDataSource)()
    viewer.DataSources.Add(dataSource)
    viewer.ShowReport()
End Sub)
End Sub)
End Sub

ReportPath: LightSwitchApplication.ReportTemplate.CompanySalesDemo.rdlc

Buil Action: Embedded Resource

Someone help me??, thanks,

Francisco.

[Francisco Fonseca]

Thanks, I resolved my problem,  the ReportPath in VB.net is not necessary to place the namespace or the folder, only the report name.

[Francisco Fonseca]

Thanks, I resolved my problem,  the ReportPath in VB.net is not necessary to place the namespace or the folder, only the report name.

[cyril]

how did you fix your problem, i am stuck please share how you resolved the problem

[Nithya B]

Hi Cyril,

Thank you for using Syncfusion products.

ReportViewer throws the above mentioned error, if an incorrect report path assigned to ReportViewer’s ReportPath property. In VB.NET, no need to specify the namespace or folder and the ReportName alone enough(CompanySalesDemo.rdlc), instead of specifying like LightSwitchApplication.ReportTemplate.CompanySalesDemo.rdlc in lsml file. And also set “Build Action” report property as “Embedded Resource”.

Please let us know if you need any further assistance on this.

Regards,
Nithya B