<input runat="server" type="button" onclick="复制"

<input runat="server" type="button" onclick="复制" value="内容"> 没反应
点击,随便找个地方粘贴不了, 根本没复制到.

HTML code

<input runat="server" id="source" type="button" onclick="document.execCommand('Copy')" size="50" value="<%# url %>"/>