Question

I am having an dropdownlistbox and fileupload control.After selecting a file from upload control,if i change the dropdownlist value(postback occurs) then the file path i chosen earlier is shown empty.
here is my code:

<asp:Label ID="lblupload" runat="server" Text="Upload a file: "></asp:Label>                
   <asp:FileUpload ID="upload" runat="server" Width="320" Height="18" BorderColor="Gray" BorderWidth="1" />
   <asp:Label ID="Perimission" runat="server" Text="Perimission"></asp:Label>
   <asp:DropDownList ID="ddlState" runat="server" OnSelectedIndexChanged="ddlState_SelectedIndexChanged" AutoPostBack="true" >
        <asp:ListItem Text="Everybody"  Value="Everybody"></asp:ListItem>
        <asp:ListItem Text="Students"  Value="Students"></asp:ListItem>
        <asp:ListItem Text="Selected Users"  Value="Selected Users"></asp:ListItem>
    </asp:DropDownList>

Answer 1

Don’t know if you really need that autopostback on the dropdownlist. But clear it and you’re ok. FileUpload values won’t be saved during postback..