I am having similar issue. I was using <asp:FileUpload .. /> on upload click i would save it to temporary location on server once saved, i delete (there is virus scan that happens when saving on temp location) and save its bytes to DB.
However, with same exact file when i am try to use <telerik:RadAsyncUpload .. /> it is taking significantly longer to save it on SAME temp location using its TemporaryFolder property. Is this a known issue? or am i doing something wrong? am i missing something? This is what my RadAsyncUpload looks like:
<telerik:RadAsyncUpload ID="Upload" runat="sever" CssClass="someCssClass" AutoAddFileInputs="false" MaxFileSize="52428800" DisablePlugins="true" PostbackTriggers="RadUploadButton" AllowedFileExtensions="docx,xlsx,png" TemporaryFileExpiration="00:20:00" OnFileUploaded="Upload_FileUploaded" OnClientFileSelected="FileSelected" OnClientFileUploadRemoved="FileRemoved" OnClientValidationFailed="ValidationFailed" >
this is my asp upload control:
<asp:FileUpload runat="server" ID="AspUploadID" />
Any help will be appreciated.