HTML控件<button>的点击事件怎么用啊

HTML code

<button class="btn1_mouseout" onmouseover="this.className='btn1_mouseover'" onmouseout="this.className='btn1_mouseout'" id="btnOK" onclick="btnOK_click">登录</button>

然后在该页的后台cs文件中:

C# code

protected void btnOK_click(object sender, EventArgs e)
        {
            lblWelcome.Text = "已登录";
        }

貌似点击根本就不起作用啊,应用html的button主要是应用动态漂亮的样式


------解决方案--------------------
 
加上 runat="server" 然后用onserverclick事件就可以了
<button class="btn1_mouseout" onmouseover="this.className='btn1_mouseover'" runat="server" onserverclick="btnOK_click"
onmouseout="this.className='btn1_mouseout'" id="btnOK" >登录</button>