asp.net 按钮提交前锁定按钮

客户端：
<asp:Button ID="btnSubmit" runat="server" Text="提 交" class="btn2" OnClick="btnSubmit_Click" 
 OnClientClick="this.disabled=true;" UseSubmitBehavior="false"/> 

在服务器端：

        if(something error before insert  to database){
            Response.Write("error");
            this.btnSubmit.Enabled = true;//解除锁定
        }
        else{
            SubmitToDB();
        }

关键点：UseSubmitBehavior