asp.net 禁用ViewState的方法

<configuration>
    <system.web>
        <pages enableViewState="false" />
    </system.web>
</configuration>
public partial class Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    { // www.jb200.com
        if (!Page.IsPostBack)
            ViewState["data"] = "Hello World!";
    }
 
    //禁用ViewState后,点击按钮显示不出"Hello World!"
    protected void Button1_Click(object sender, EventArgs e)
    {
        if (ViewState["data"] != null)
            Response.Write(ViewState["data"].ToString());
}
}