Question

C#怎么判断鼠标是否离开某个控件

Answer 1

<script>
function aa()
{
alert("a");
}
</script>

<asp:TextBox ID="TextBox1" runat="server" onmouseout="aa()"></asp:TextBox>
onmouseout鼠标离开事件

Answer 2

用onmouseout（）事件吧！