When AjaxFileUpload post back it takes your page URL and appends onto the end of it it's own query strings (contextkey and guid). This works fine if your page URL doesn't already contain any query strings but if it does then you end up with a URL that contains two question marks which then corrupts your own final query string value and this in turn stops the upload from working.
Comments: I am facing same issue in my application & I am using ajax control toolkit (v15.1.4) It seems to me that this bug is yet not resolved in latest version of toolkit, can you please guide me how to resolve the same in latest version as I have gone through code but found structure is totally changed.
Comments: I am facing same issue in my application & I am using ajax control toolkit (v15.1.4) It seems to me that this bug is yet not resolved in latest version of toolkit, can you please guide me how to resolve the same in latest version as I have gone through code but found structure is totally changed.