Is it possible to upload a file to a Web.API method instead of a postback?

I have this problem on my form... says the file extension is not allowed on iPhone.  Users are able to take photos and upload that, but not select photos from their gallery to upload.   Works fine on Androids.   Any suggestions??   Error looks like this: ...

 I am getting an intermittent problem when users are uploading using the Cutesoft Ajax uploader.  An error message appears stating "Unable  to find the uploaded file in directory : C:\Windows\TEMP\AjaxUploaderTemp". Does anybody know why this is happening please? Thanks for your help. 

Hi, expert. using  Ajax Uploader  , i meet a problem. when i upload a file, i want to upload it again and save the file at different place. seems the control can't upload second only if i refresh. the page. how can i upload the same file many time.  

 I downloaded a trial version of ajax uploader. The browse windows comes up fine when I run it within Visual Studio but it does not show up online below   http://www.atexaslowcostefile.com/Index.aspx [please select Lead Document from the left hand side navigation]   The code snippet that I have put is below ...

We are using Asp.Net version 3.0.0.0 of teh CuteWebUI.AjaxUploader on several pages on our site. One page is loaded in an iFrame and displayed in a div styled like a modal dialog. The page that is loaded in the iFrame has a asp:DropDownList, and a few asp validators. The page works fine in all browsers except FireFox 25.0.1. When the iFrame/div ...

In IE11, ajax uploader shows error message onload and showing 2 input boxes and 2 browse buttons. When selected file, does not show progress bar. What needs to be done to resolve this issue? 

We are using AjaxUploader 3.0.20111122. Is there any update in ajax uploader? if yes, what are the new features? What would be it's use?

First of all thanks for your reply.   I made changes for configuration as you mentioned above and remove link of Resources.uploader.js. Bingoo!! its working fine.  But there is issue I observe I can select only one file in place of multiple even we set property MultipleFilesUpload="true".    This issue is ...

I am using the single file upload and note that after the file is upload, the gride with the file name and check mark appear for only a second, then immediately replaced by the Trace information.  I can not figure out what is caused the grid to disappear.     Also, I would like to customize the grid to remove the ...