有验证码的登陆界面（ajax,ashx技术制作）(6)

                        Height="20px" ImageUrl="ashx/VDC.ashx"
                    Style="left: 0px; position: relative; top: 3px; width: 64px;" />
                <input id="Eyes" style="width: 44px; height: 21px" type="button" onclick="javascript:window.location.reload();" value="看不清" class="btn" /></div>
            <div style="width: 320px; height: 35px">
            </div>
            <div style="width: 320px; height: 33px; text-align: left;">
                &nbsp;
                <input id="Login" type="button" value="登  陆"  onclick="checkcode();" style="width: 75px" class="btn"/>
                &nbsp; &nbsp;&nbsp; &nbsp;
                <input id="Reset" style="width: 75px" type="reset" value="重  置" class="btn" /></div>
        </div>
        </div>
    </form>
</body>
</html>

3、编写登陆界面的代码部分：testlogin.aspx.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace TestExtjsJson
{
    public partial class TestLogin : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            //注册ajax
            if (!Page.IsPostBack)
            {
                AjaxPro.Utility.RegisterTypeForAjax(typeof(TestExtjsJson.TestLogin));     //注册时一定要写  命名空间.类名