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combit.Reporting.Web Namespace / Html5ViewerConfig Class / OnListLabelRequest Event

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    OnListLabelRequest Event (Html5ViewerConfig)
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    Event that is called when the Html5Viewer exports a report and no OnListLabelRequest handler was set for the Html5ViewerOptions object of the Html5Viewer instance. This event must create a fully initialized List & Label instance.
    Public Event OnListLabelRequest As EventHandler(Of ListLabelRequestEventArgs)
    public event EventHandler<ListLabelRequestEventArgs> OnListLabelRequest
    event EventHandler<ListLabelRequestEventArgs^>^ OnListLabelRequest
    Event Data

    The event handler receives an argument of type ListLabelRequestEventArgs containing data related to this event. The following ListLabelRequestEventArgs properties provide information specific to this event.

    A custom object that was passed by the user when creating the viewer control.  
    Sets the directory for temporary files that are generated while the report is created.  
    If true, the Html5Preview will use the LL instance created in this callback for its own settings (language etc.).  
    Returns the logger of the Html5Viewer instance as defined in Html5ViewerOptions.SetLogger. It is recommended to pass this logger to the ListLabel constructor in your event handler.  
    This property must be assigned to the created List & Label instance.  
    Contains the report name that was specified in the ReportName property (Html5ViewerControl) or the report name argument of @Html.Html5Viewer().  
    string _reportsPath;
    protected void Application_Start(Object sender, EventArgs e)
       Html5ViewerConfig.OnListLabelRequest += Services_OnListLabelRequest;
       _reportsPath = Server.MapPath("~/reports/");
    void Services_OnListLabelRequest(object sender, ListLabelRequestEventArgs e)
       ListLabel ll = new ListLabel();
       //Set datasource
       ll.DataSource = DataAccess.CreateProviderCollection();
       ll.AutoProjectFile = _reportsPath + e.ReportName;
       //Set temp directory
       e.ExportPath = Path.GetTempPath();  
       e.NewInstance = ll;

    Platforms: Windows 8.1, Windows 10 (Version 20H2 - 22H2), Windows 11 (21H2 - 22H2), Windows Server 2012 - 2022

    See Also