Question

aspx:

<asp:UpdatePanel ID="updtEmpMaster" runat="server">
<ContentTemplate>

<asp:FileUpload ID="tPhoto" Height="23px" runat="server" />
<asp:Button ID="Button1" CssClass="btnImage" runat="server" Text="OK" 
onclick="Button1_Click" />

</ContentTemplate>
</asp:UpdatePanel>  

aspx.cs:

protected void Button1_Click(object sender, EventArgs e)
{
    if (tPhoto.HasFile)
    {
    …………………..;
    }
    else
    {
        …………………..;
    }
}   

Here if condition is failing even after an image file is uploaded. No problem when using without UpdatePanel. UpdatePanel is also needed in current scenario. Any way I can have solution with UpdatePanel.

Answer 1

As per link http://forums.asp.net/p/1105208/1689084.aspx

This problem is somewhat well documented, the update panel is listed as not working with certain controls.

File upload, and tree view being 2 of the biggies.

IN any case, one solution is available on code project:

http://www.codeproject.com/useritems/simpleajaxupload.asp

if you look around the forums and google, you can read more about the problem if your interested, but the code project solution should get you started.