注销

function ClearSession() {
            $.ajax({
                type: "get",
                url: "/Main/Logout.aspx",
                data: "clear=true",
                success: function(msg) {
                    if (msg != null) {
                        if (msg == 'true') {
                            alert('成功注销该用户!');
                            location.href = '/IndexTransferPage.aspx';
                            return true;
                        }
                    }
                    return false;
                }
            })
        }

   <input type="button" class="button_gray_s" value="注销" onclick="ClearSession();" style="cursor: hand; border:0px" />

Logout.aspx页面
  protected void Page_Load(object sender, EventArgs e)
        {
            if (Request.QueryString["clear"] != null) {
                if (Request.QueryString["clear"].ToLower().Trim() == "true")
                {
                    Session.Abandon();
                    Response.Write("true");
                    Response.End();
                }
                else {
                    Response.Write("false");
                }
            }
        }