FileUpload control Implementation code that prohibits manual input or paste

html tag:

<input type="text" name="txt" onkeydown="=false;" onpaste="return false" />

Server controls:

<asp:TextBox ID="txt" runat="server" onkeydown="=false;" onpaste="return false"></asp:TextBox>

Manual input is often prohibited when using FileUpload:

<asp:FileUpload ID="fu" runat="server" onkeydown="=false;" onpaste="return false" />