Yogesh,   File extension allowed to upload and MaxsizeKb are required to set in the server side.   If you want o use Javascript script to change the above setting, please use Ajax.

Hi, I've created an ASPX form and have added a UploadAttachements control.  Is there any way that I can automatically invoke the upload button and display the file browser dialog when my page loads?  Many thanks,Tim

It's strange.   Do you mean after showing this error dialog, the upload function of ''Image Gallery'' work just fine?

Hi,   I think you need test a general asp.net upload control for the large file , to validate your configuration.   <asp:FileUpload runat=server ID=FileUpload1 />   Regards, Terry    

this is the error I get when using the last build

Hi,   Can you test this url again ?   http://ajaxuploader.com/demo/Large-File-Upload.aspx?UploaderDebug=1   In the top-right , there's a trace box , you can get more informat from it.   Regards, Terry

Thats the exact same problem I'm having, upload process works fine but manually dropping into the directory doesn't work. Adam my pictures are all .JPG.   Andrew

Hi,   Can you post screen shot ?   I tested this and no error :   Attachments1.Upload(0, ''hello.zip'', Stream.Null);   Regards, Terry  

We have found the reason and will upload a new update soon.   Regards , Terry .

FrankMoroney ,   It's strange. Can you upload the document now?