WebForm注册界面

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class zhuce : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)//判断是否为响应回发
        {
            Insert("0001");
        }       
    }

    //联动
    protected void DropDownListSheng_SelectedIndexChanged(object sender, EventArgs e)
    {
        string Code = DropDownListSheng.SelectedItem.Value;
        List<ChinaStates> listShi = new ChinaStatesDA().SelectByParentAreaCode(Code);
        DropDownListShi.DataSource = listShi;
        DropDownListShi.DataTextField = "AreaName";
        DropDownListShi.DataValueField = "AreaCode";
        DropDownListShi.DataBind();

        UpdatePanel1.Update();
    }

    //初始加载页面的地区显示
    public void Insert(string parentCode)
    {
        List<ChinaStates> listSheng = new ChinaStatesDA().SelectByParentAreaCode(parentCode);
        DropDownListSheng.DataSource = listSheng;
        DropDownListSheng.DataTextField = "AreaName";
        DropDownListSheng.DataValueField = "AreaCode";
        DropDownListSheng.DataBind();

        List<ChinaStates> listShi = new ChinaStatesDA().SelectByParentAreaCode("11");
        DropDownListShi.DataSource = listShi;
        DropDownListShi.DataTextField = "AreaName";
        DropDownListShi.DataValueField = "AreaCode";
        DropDownListShi.DataBind();

        List<ChinaStates> listDiqu = new ChinaStatesDA().SelectByParentAreaCode("1101");
        DropDownListDdiqu.DataSource = listDiqu;
        DropDownListDdiqu.DataTextField = "AreaName";
        DropDownListDdiqu.DataValueField = "AreaCode";
        DropDownListDdiqu.DataBind();
    }

    //地区联动
    protected void DropDownListShi_SelectedIndexChanged(object sender, EventArgs e)
    {
        string Code = DropDownListShi.SelectedItem.Value;
        List<ChinaStates> listDiqu = new ChinaStatesDA().SelectByParentAreaCode(Code);
        DropDownListDdiqu.DataSource = listDiqu;
        DropDownListDdiqu.DataTextField = "AreaName";
        DropDownListDdiqu.DataValueField = "AreaCode";
        DropDownListDdiqu.DataBind();

        UpdatePanel1.Update();
    }

    //用户名文本改变时触发
    protected void txtuser_TextChanged(object sender, EventArgs e)
    {
        if (txtuser.Text.Length<4)
        {
            LabelUser.Text = "用户名长度不能小于4";
        }
        else
        {
            bool isok = new UsersDA().CheckUsersName(txtuser.Text);
            if (isok)
            {
                LabelUser.Text = "√";
            }
            else
            {
                LabelUser.Text = "X";
            }
        }
    }
    //姓名文本改变时触发
    protected void txtname_TextChanged(object sender, EventArgs e)
    {
        if (txtname.Text.Length<4)
        {
            LabelName.Text = "用户名长度不能小于4";
        }
        else
        {
            LabelName.Text = "√";
        }
    }
    //密码文本改变时触发
    protected void txtpwd_TextChanged(object sender, EventArgs e)
    {
        if (txtpwd.Text.Length<6)
        {
            LabelPwd.Text = "密码长度不能小于6位";
        }
        else
        {
            
            LabelPwd.Text = "√";
        }
    }
    //判断密码是否一致
    protected void txtpwd2_TextChanged(object sender, EventArgs e)
    {
        if (txtpwd2.Text==txtpwd.Text)
        {
            LabelPwd2.Text = "√";
        }
        else
        {
            LabelPwd2.Text = "两次密码不一致";
        }
    }
    //注册按钮
    protected void Button1_Click(object sender, EventArgs e)
    {
        try
        {
            Users p = new Users();
            p.UsersName = txtuser.Text;
            p.Name = txtname.Text;
            p.Pwd = txtpwd.Text;
            p.Account = txtpwd2.Text;
            p.Sex = RadioButton1.Checked == true ? "男" : "女";
            p.Home = DropDownListSheng.SelectedItem.Text + DropDownListShi.SelectedItem.Text + DropDownListDdiqu.SelectedItem.Text;
            p.Brithday = DateTime.Parse(txtbir.Text);
            p.Tel = txttel.Text;
            p.QQ = txtqq.Text;
            p.Email = txtemail.Text;
            new UsersDA().Insert(p);
            var re = base.Response;
            re.Redirect("LogInss.aspx");
        }
        catch (Exception)
        {

            Response.Write("<script>alert('填写信息有误')</script>");
        }
        finally
        {
            var re = base.Response;
            re.Redirect("zhuce.aspx");
        }
    }
    //判断邮箱输入格式
    protected void txtemail_TextChanged(object sender, EventArgs e)
    {
        MatchCollection mc = Regex.Matches(txtemail.Text.ToString().Trim(), @"[a-zA-Z0-9_\-\.]+@\w+(\.\w+)+");
        if (mc!=null)
        {
            
        }
        else
        {
            Labelemail.Text = "邮箱格式不正确";
        }
    }
}