How to start uploading file as soon as user selects the file but save only when user clicks button.

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I have a few FileUpload controls , i am currently saving the files in database on Button click. The scenario is that i want to start transferring file the moment user selects a file.. but save them on database only when user clicks on the save button. I have googled a lot but could not find anything on such scenario.. I did find tutorials on how to save files without button click but that is not what i want because i want to save it only on Button Click BUT i want to start the transfer as soon as file is selected (just like Gmail).

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Currently i am using a custom file control made with the help of javascript..
<span class="FileUpload">
    <input type="file" size="24" id="BrowserHidden" runat="server" onchange="getElementById('FileField').value = getElementById('BrowserHidden').value;" />
    <span class="BrowserVisible"><input type="text" id="FileField" runat="server" /></span>
    </span>

Posted 5-Sep-13 23:32pm

arbaaz jalil

Updated 5-Sep-13 23:44pm

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Khandwawala Hatim 6-Sep-13 5:40am

which type of file upload control you are using (i.e. ASP file upload control or ajax or jquery)

arbaaz jalil 6-Sep-13 5:44am

Updated my question

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Khandwawala Hatim · Answer 1 · 2013-09-05T23:56:00

Solution 1

Check this. And reply if it wont solve your problem.

Posted 5-Sep-13 23:56pm

Khandwawala Hatim

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arbaaz jalil 6-Sep-13 6:08am

I am not sure if that links answers my question.. my question is that how can i start transferring the bytes to the server the moment i select file.. but save it on database only on button click.. I am trying to utilize the time during which user will be selecting more files.

Khandwawala Hatim 6-Sep-13 6:26am

if this is the case you can use threading concept and with the above link help you can achieve the functionality. not sure with the implementation.