ASPxTreeListExporter.BeforeExport Event

Occurs before the tree list content is exported.

Namespace: DevExpress.Web.ASPxTreeList

Assembly: DevExpress.Web.ASPxTreeList.v24.1.dll

NuGet Package: DevExpress.Web

Declaration

C#

public event ASPxTreeListBeforeExportEventHandler BeforeExport

VB.NET

Public Event BeforeExport As ASPxTreeListBeforeExportEventHandler

Event Data

The BeforeExport event's data class is ASPxGridBeforeExportEventArgs. The following properties provide information specific to this event:

Property	Description
ExportOptions	Specifies the export parameters.
ExportTarget	Gets the export format.

Remarks

The BeforeExport event enables you to perform custom actions before the tree list content is exported.

ASPX

<dx:ASPxTreeListExporter ID="ASPxTreeListExporter1" runat="server" OnBeforeExport="ASPxTreeListExporter1_BeforeExport">
</dx:ASPxTreeListExporter>

C#

protected void ASPxTreeListExporter1_BeforeExport(object sender, DevExpress.Web.ASPxGridBeforeExportEventArgs e) {
    switch(e.ExportTarget) {
        case ExportTarget.Pdf:
            var opts = e.ExportOptions as PdfExportOptions;
            opts.PasswordSecurityOptions.PermissionsPassword = "MyCustomPassword";
            break;
        ...
    }
}

Online Demo

ASPxTreeList - Export Data