File Upload not worked in update panel

[hetalupadhyay]

hi
i take one file upload control put in update panel when i click save button then file upload control not read taken file
if remove update panel then work
pls give me answer fro this..........................

[tagg3rx]

this is a known issue with Microsoft Ajax and has been discussed at length in many forums. There are several work arounds - the one I use (which isnt my favorite approach) is placing a second aspx page with only your file upload box in an i-frame and having a button on that page to attach the file (basically resulting in 2 submit button on the page - one to handle the file upload - one to complete the entire form submit. Then in your calling page that has the i-frame on it you pass the i-frame the record id your working with like :

----------aspx page
    <iframe runat="server" id="myIframe"></iframe>
 

----------aspx.cs page
    protected void OnDetailLoad()
    {
        string _recID = 23;
        myIframe.Attributes.Add("src", "upl.aspx?recID=" + _recID);
    }