asp.net服务器控件如何在后台添加或删除样式

<style>

.TestStyle

{

font: 12pt verdana

font-weight:700

color:orange

}

</style>

<form runat="server">

<asp:Button id="Button" CssClass="TestStyle"

Text="Submit" runat="server"/>

</form>

1、Button1.Style.Add(HtmlTextWriterStyle.Color,"red")

2、Button1.Style.Add("color","red")

3、Button1.Attributes.Add("style","color:red")

<asp:Button ID="Button1" style="color:red"></asp:Button>是不管用的。

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