How to get serverside renaming filename in clientside while using AsyncFileUpload

Question

server sidecode

protected void UploadComplete(object sender, AjaxControlToolkit.AsyncFileUploadEventArgs e)
{
    rlativepath =GeneratePrefixFileName() + Asy         


        

Answer 1

Add HiddenField control onto a form:

<asp:HiddenField runat="server" ID="UploadedPathHiddenField" />

Rewrite UploadComplete method as below:

protected void UploadComplete(object sender, AsyncFileUploadEventArgs e)
{
    var fileName = GeneratePrefixFileName() +  System.IO.Path.GetFileName(e.FileName);
    var relativePath = "~/Image/" + fileName;
    var filePath = Server.MapPath(relativePath);
    AsyncFileUpload1.SaveAs(filePath);
    ScriptManager.RegisterClientScriptBlock(this, this.GetType(), "filePath", "top.$get(\"" + UploadedPathHiddenField.ClientID + "\").value = '" + ResolveClientUrl(relativePath) + "';", true);
}

After that you can get path of saved image in showConfirmation method by :

var src = $get("<%= UploadedPathHiddenField.ClientID %>").value;