Occurs before the tree list content is exported.
Namespace: DevExpress.Web.ASPxTreeList
Assembly: DevExpress.Web.ASPxTreeList.v19.2.dll
public event ASPxTreeListBeforeExportEventHandler BeforeExportPublic Event BeforeExport As ASPxTreeListBeforeExportEventHandlerThe BeforeExport event handler receives an argument of the ASPxGridBeforeExportEventArgs type. The following properties provide information specific to this event.
| Property | Description |
|---|---|
| ExportOptions | Specifies the export parameters. |
| ExportTarget | Gets the export format. |
The BeforeExport event enables you to perform custom actions before the tree list content is exported.
<dx:ASPxTreeList ID="ASPxTreeList1" runat="server" OnBeforeExport="ASPxTreeList1_BeforeExport">
</dx:ASPxTreeList>
protected void ASPxTreeList1_BeforeExport(object sender, DevExpress.Web.ASPxGridBeforeExportEventArgs e) {
switch(e.ExportTarget) {
case ExportTarget.Pdf:
var opts = e.ExportOptions as PdfExportOptions;
opts.PasswordSecurityOptions.PermissionsPassword = "MyCustomPassword";
break;
...
}
}