Can't get AsyncFileUpload to work in update panel

Question

I have a user control with a updatepanel, script manager and a asyncfileupload control.

<%@ Register Assembly=\"AjaxControlToolkit\" Namespace=\"AjaxContr         


        

Answer 1

In case this helps someone, I fixed my problem by adding the following to the form tag:

enctype="multipart/form-data" method="post"

Answer 2

Make sure that the usercontrol with asyncfileupload control is not loaded asynchronously, for example via Response.Redirect("pageWithUploadControl").

Have you handled the FileUploadComplete Event and checked if AsyncFileUploadState is Success?

   Private Sub AsyncFileUpload1_UploadedComplete(ByVal sender As Object, ByVal e As AjaxControlToolkit.AsyncFileUploadEventArgs) Handles AsyncFileUpload1.UploadedComplete
        If e.state = AjaxControlToolkit.AsyncFileUploadState.Success Then
            '....'
        Else
            showErrorMessage(e)
        End If
    End Sub

    Private Sub showErrorMessage(ByVal e As AjaxControlToolkit.AsyncFileUploadEventArgs)
        Dim message As String = String.Empty
        Select Case e.statusMessage
            Case AjaxControlToolkit.AsyncFileUpload.Constants.Errors.EmptyContentLength
                message = "Empty content length!"
            Case AjaxControlToolkit.AsyncFileUpload.Constants.Errors.FileNull
                message = "Fill NULL!"
            Case AjaxControlToolkit.AsyncFileUpload.Constants.Errors.InputStreamNull
                message = "Input Stream NULL!"
            Case AjaxControlToolkit.AsyncFileUpload.Constants.Errors.NoFileName
                message = "No File Name!"
            Case AjaxControlToolkit.AsyncFileUpload.Constants.Errors.NoFiles
                message = "No Files!"
        End Select
        LblMessage.Text = message 
    End Sub

Try to change change the enctype of your form:

<form id="form1" enctype="multipart/form-data" runat="server">

Answer 3

I was having the same problem, read and tried countless posts on how to fix it (obviously a lot of people are having this issue) but nothing worked. Until I replaced the ScriptManager with the ToolkitScriptManager
Change:

<asp:ScriptManager ID="ScriptManager2" runat="server" ></asp:ScriptManager>

with:

<cc1:ToolkitScriptManager ID="ScriptManager2" runat="Server" />

I am not sure if this is requirement on the latest tool kit (December 2013), but it worked for me. Hopefully it will help someone else too.

Answer 4

Hi you can do it by using OnUploadedComplete="AsyncFileUploadPDF_UploadedComplete" in .cs file add

protected void AsyncFileUploadPDF_UploadedComplete(object sender, AjaxControlToolkit.AsyncFileUploadEventArgs e)
        {
            if (AsyncFileUploadImage.HasFile)
            {
                Session["AsyncFileUploadPDF"] = AsyncFileUploadImage;
            }
        }

and you can get data from session where ever you want as I get on click event of button

protected void btnSaveParts_Click(object sender, EventArgs e)
        {
            AsyncFileUploadPDF = (AsyncFileUpload)Session["AsyncFileUploadPDF"];
            PdfFileName = AsyncFileUploadPDF.FileName;         
        }