New answers tagged attachments
According to this thread: There is no maximum limit specified for the number of attachments that you can add to a SharePoint list item. But if you have a mobile view, the number of attachments displayed is limited to 3.
There isn't anyway to do this in the UI or SharePoint Designer. You would need to create a custom Visual Studio solution. A couple things you could do in Visual Studio: 1) create a Visual Studio workflow that runs each time the item is edited to get the information, or 2) create a list event receiver that accomplishes the same thing.
Actually InfoPath attachments are stored as pieces of text called base64 encoded strings within the InfoPath form itself. To be able to store a file as a string, InfoPath converts the binary data of the file to a string. Once you’ve added a file as an attachment to an InfoPath form, you can use the menu options Open or Save As on the File Attachment ...
You can use plupload - its quite popular. Demo: http://www.west-wind.com/weblog/posts/2013/Mar/12/Using-plUpload-to-upload-Files-with-ASPNET
You can use AjaxFileUpload. Have a look at the demo on below link. http://www.asp.net/ajaxLibrary/AjaxControlToolkitSampleSite/ajaxFileUpload/ajaxFileUpload.aspx
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