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Problems During Load Report VB.net

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
    Dim items As Object = Me.DataWorkspace.ApplicationData.SalesDetailsSet.GetQuery().Execute().Cast(Of Object)().ToList()
    Dim viewer As ReportViewer = TryCast(e.Control, ReportViewer)
    Dim dataSource As New ReportDataSource("Sales", items)
    viewer.DataSources = New List(Of ReportDataSource)()
End Sub)
End Sub)
End Sub

ReportPath: LightSwitchApplication.ReportTemplate.CompanySalesDemo.rdlc

Buil Action: Embedded Resource

Someone help me??, thanks,


4 Replies

FF Francisco Fonseca February 24, 2015 04:07 PM UTC

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

FF Francisco Fonseca February 24, 2015 04:10 PM UTC

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

CY cyril May 19, 2015 01:50 AM UTC

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

NB Nithya B Syncfusion Team May 19, 2015 12:39 PM UTC

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.

Nithya B

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