今天遇到一個文章，老外問我如何給FILEUPLOAD 控制項上色，就連老外的MVP也說不是容易的事情，呵呵。
其實有些時候我們只要變通下就可以解決這樣的小問題，看看My Code。
<%@ Page Language="C#" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<style type="text/css">
#divFileUpload input
{
border-color: Olive;
border-style: solid;
border-width: 1px;
}
</style>
</head>
<body>
<form id="form1" runat="server">
<div id="divFileUpload">
<asp:FileUpload ID="FileUploadCSSDemo" runat="server" />
</div>
<asp:Button ID="btnSubmit" runat="server" Text="Submit" />
</form>
</body>
</html>
注意代碼裡面的CSS部分，其實道理很簡單，我們知道FILEUPLOAD 會被瀏覽器解釋成為以INPUT為標記的HTML元素，所以我就把樣式應用給這個特定的DIV【divFileUpload】裡面的HTML元素，所以如果你運行My Code，你會看到樣式只會應用到FILEUPLOAD控制項上，而不會應用到其它可以解釋為INPUT的HTML元素上。 #divFileUpload input
{
border-color: Olive;
border-style: solid;
border-width: 1px;
}
這個是我給老外回答問題的源地址：
http://forums.asp.net/p/1423781/3176963.aspx#3176963
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