FileUploadCompleteEventArgs.CallbackData Property

Gets or sets a string that contains specific information (if any) to be passed from the server side to the client.

Namespace: DevExpress.Web

Assembly: DevExpress.Web.v18.2.dll

Declaration

C#

public string CallbackData { get; set; }

VB.NET

Public Property CallbackData As String

Property Value

Type	Description
String	A String value representing callback data.

Remarks

Use the CallbackData property to define specific information which has been collected on the server side, and should be passed to the client for further processing within the ASPxClientUploadControl.FileUploadComplete client event.

Related GitHub Examples

The following code snippets (auto-collected from DevExpress Examples) contain references to the CallbackData property.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

C#

how-to-upload-and-download-html-files-to-from-htmleditor-e2838/CS/Controllers/HomeController.cs#L42

if (e.UploadedFile.IsValid) {
    e.CallbackData = System.Text.Encoding.UTF8.GetString(e.UploadedFile.FileBytes);
}

how-to-use-the-client-performdatacallback-method-and-the-server-customdatacallback-event-e1397/CS/HtmlEditorSaveHtml/DevExpress/ASPxHtmlEditorForms/InsertImageForm.ascx.cs#L80

try {
    args.CallbackData = SaveUploadFile();
} catch (Exception e) {

how-to-set-up-a-custom-font-dialog-e1934/CS/HtmlEditorCustomFontDialog/DevExpress/ASPxHtmlEditorForms/InsertImageForm.ascx.cs#L80

try {
    args.CallbackData = SaveUploadFile();
} catch (Exception e) {

how-to-provide-an-end-user-with-a-list-of-templates-to-insert-into-the-editor-e1974/CS/InsertTemplateText/DevExpress/ASPxHtmlEditorForms/InsertImageForm.ascx.cs#L80

try {
    args.CallbackData = SaveUploadFile();
} catch (Exception e) {

gridview-batch-edit-how-to-use-the-upload-control-in-batch-edit-mode-t191714/CS/Sample/Controllers/HomeController.cs#L32

var name = e.UploadedFile.FileName;
e.CallbackData = name;

VB.NET

how-to-upload-and-download-html-files-to-from-htmleditor-e2838/VB/Controllers/HomeController.vb#L42

If e.UploadedFile.IsValid Then
    e.CallbackData = System.Text.Encoding.UTF8.GetString(e.UploadedFile.FileBytes)
End If

how-to-use-the-client-performdatacallback-method-and-the-server-customdatacallback-event-e1397/VB/HtmlEditorSaveHtml/DevExpress/ASPxHtmlEditorForms/InsertImageForm.ascx.vb#L78

Try
    args.CallbackData = SaveUploadFile()
Catch e As Exception

how-to-set-up-a-custom-font-dialog-e1934/VB/HtmlEditorCustomFontDialog/DevExpress/ASPxHtmlEditorForms/InsertImageForm.ascx.vb#L78

Try
    args.CallbackData = SaveUploadFile()
Catch e As Exception

how-to-provide-an-end-user-with-a-list-of-templates-to-insert-into-the-editor-e1974/VB/InsertTemplateText/DevExpress/ASPxHtmlEditorForms/InsertImageForm.ascx.vb#L78

Try
    args.CallbackData = SaveUploadFile()
Catch e As Exception

gridview-batch-edit-how-to-use-the-upload-control-in-batch-edit-mode-t191714/VB/Sample/Controllers/HomeController.vb#L34

Dim name = e.UploadedFile.FileName
e.CallbackData = name