Hi,

There is no documentation for ValidateOption.AllowedFileMimeTypes. How can I use this property to limit the file types a user can upload? And more importantly, where can I set the error message shown to the user if he/she uploads a file with an invalid type?

Thanks. 

Hi Ardalan,

1. To limit the upload file extension, I suggest you set "AllowedFileExtensions".

  <ValidateOption  AllowedFileExtensions="jpg,gif,txt"/> 

2. Please refer to http://www.ajaxuploader.com/document/scr/html/How-to-catch-uploader-error.htm, it shows you how to catch the uploader error then shows you custom error message.

Regards,

Ken 

Hi Ken,

I want to check the MIME type because the user can easily bypass the file extension validation by renaming the file. Does this control support MIME type checking?

Hi Ardalan,

Yes, just need to set EnableMimetypeChecking to true.

  <ValidateOption EnableMimetypeChecking="true" /> 

Regards,

Ken 

How can I specify which MIME types to check? That was my initial question. How do I set the ValidateOption.AllowedFileMimeTypes property? Would you please give me an example?

Also, this link that you provided (http://www.ajaxuploader.com/document/index.htm#page=html/How-to-catch-uploader-error.htm) does not give specific instructions on how to catch the MIME error. What do the parameters of the CuteWebUI_AjaxUploader_OnTaskError event do? How can I know if this is the MIME error?

CuteWebUI_AjaxUploader_OnTaskError(obj,msg,reason)

Hi Ardalan,

1. set the mime type like below

  <ValidateOption AllowedFileMimeTypes="image/gif,image/jpeg" />

2. The mime type error message is "The file is corrupt or has an incorrect extension. ", you can catch this message link below, then shows your custom error.

<script type="text/javascript">
    function CuteWebUI_AjaxUploader_OnError(msg) {
        if (msg.indexOf("The file is corrupt or has an incorrect extension") != -1) {
            //show the message you want
            alert("The file is locked");
            return false;
        }
    }
</script>
 

Regards,

Ken