下边是实现的代码：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Text.RegularExpressions;
namespace Registerting
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
txtUserName.Enter += new EventHandler(txtUserName_Enter);
txtUserName.Leave += new EventHandler(txtUserName_Leave);
txtPassword.Enter += new EventHandler(txtUserName_Enter);
txtPassword.Leave += new EventHandler(txtPassWord_Leave);
txtPWConfirm.Enter += new EventHandler(txtPWConfirm_Enter);
txtPWConfirm.Leave += new EventHandler(txtPWConfirm_Leave);
txtMail.Enter += new EventHandler(txtMail_Enter);
txtMail.Leave += new EventHandler(txtMail_Leave);
chkAll.Enter += new EventHandler(chkAll_Enter);
chkAll.Leave += new EventHandler(chkAll_Leave);
}
/// <summary>
/// txtUserName(用户名)失去焦点事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void txtUserName_Leave(object sender, EventArgs e)
{
if (txtUserName.Text.Length < 1)
{
lblUNAttention.Visible = true;
lblUNAttention.Text = "用户名不能为空";
}
}
/// <summary>
/// txtUserName(用户名)获得焦点事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void txtUserName_Enter(object sender, EventArgs e)
{
if (txtUserName.Text.Length > 0)
{
lblUNAttention.Visible = false;
}
}
/// <summary>
/// txtPassWord(密码)失去焦点事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void txtPassWord_Leave(object sender, EventArgs e)
{
if ((0 < txtPassword.Text.Length) && (txtPassword.Text.Length < 6))
{
lblPasswordAttenton.Visible = true;
lblPasswordAttenton.Text = "密码不能少于六位";
}
else if (txtPassword.Text.Length < 1)
{
lblPasswordAttenton.Visible = true;
lblPasswordAttenton.Text = "密码不能为空";
}
}
/// <summary>
/// txtPassWord(密码)获得焦点事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void txtPassWord_Enter(object sender, EventArgs e)
{
if (txtUserName.Text.Length > 0)
{
lblUNAttention.Visible = false;
}
else
{
lblUNAttention.Visible = true;
}
lblPasswordAttenton.Visible = false;
}
/// <summary>
/// txtPWConfirm(密码)失去焦点事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void txtPWConfirm_Enter(object sender, EventArgs e)
{
if (txtUserName.Text.Length > 0)
{
lblUNAttention.Visible = false;
}
else
{
lblUNAttention.Visible = true;
}
if (txtPassword.Text.Length > 0)
{
lblPasswordAttenton.Visible = false;
}
else
{
lblPasswordAttenton.Visible = true;
}
}
/// <summary>
/// txtPWConfirm(密码)获得焦点事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void txtPWConfirm_Leave(object sender, EventArgs e)
{
if (txtPWConfirm.Text.Length < 1)
{
lblPWAttionC.Text = "确认密码输入不能为空";
lblPWAttionC.Visible = true;
}
else if (txtPWConfirm.Text != txtPassword.Text)
{
lblPWAttionC.Text = "两次密码输入不一致，
请重新输入";
lblPWAttionC.Visible = true;
}
else if (txtPWConfirm.Text == txtPassword.Text)
{
lblPWAttionC.Visible = false;
}
}
private void txtMail_Enter(object sender, EventArgs e)
{
lblMAttion.Visible = false;
}
private void txtMail_Leave(object sender, EventArgs e)
{
string reg = @"^s*([A-Za-z0-9_-]+(.w+)*@([w-]+.)+w{2,10})s*$";
if (txtMail.Text.Length < 1)
{
lblMAttion.Text = "邮箱输入不能为空";
lblMAttion.Visible = true;
}
else if (Regex.IsMatch(txtMail.Text, reg) == false)
{
lblMAttion.Text = "邮箱输入不合法";
lblMAttion.Visible = true;
}
}
private void chkAll_Enter(object sender, EventArgs e)
{
lblHobbyAttention.Visible = false;
}
private void chkAll_Leave(object sender, EventArgs e)
{
int sum = 0;
for (int i = 0; i < chklEate.Items.Count; i++)
{
if (chklEate.GetItemChecked(i) == true)
{
sum = sum + 1;
}
}
if (sum < 1)
{
lblHobbyAttention.Visible = true;
lblHobbyAttention.Text = "您还没有选择任何爱好";
}
}
/// <summary>
/// 全选或者全不选按钮
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void chkAll_CheckedChanged(object sender, EventArgs e)
{
for (int i = 0; i < chklEate.Items.Count; i++)
{
if (chkAll.Checked == true)
{
//全选
chklEate.SetItemChecked(i, true);
}
else
{
//全不选
chklEate.SetItemChecked(i, false);
}
}
}
/// <summary>
/// 提交注册信息，如果注册信息都满足条件，那么提交成功，如果没有，则注册失败
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnRegister_Click(object sender, EventArgs e)
{
//邮箱的正则表达式
string reg = @"^w+((-w+)|(.w+))*@[A-Za-z0-9]+((.|-)[A-Za-z0-9]+)*.[A-Za-z0-9]+$";
int sum = 0;
//计算选择的爱好数目
for (int i = 0; i < chklEate.Items.Count; i++)
{
if (chklEate.GetItemChecked(i) == true)
{
sum = sum + 1;
}
}
//判断注册的所有信息是否合法，合法就注册成功，并关闭窗口
if ((txtUserName.Text.Length > 0) && (txtPassword.Text.Length > 5) && (txtPassword.Text == txtPWConfirm.Text) && (Regex.IsMatch(txtMail.Text, reg) == true) && (sum > 0))
{
DialogResult dr = MessageBox.Show("您注册成功！", "系统提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
if (dr == DialogResult.OK)
{
this.Close();
}
}
else
{
MessageBox.Show("您注册失败！", "系统提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
/// <summary>
/// 清空输入信息和提示信息
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnConcel_Click(object sender, EventArgs e)
{
txtUserName.Clear();
lblUNAttention.Text = "";
txtPassword.Clear();
lblPasswordAttenton.Text = "";
txtPWConfirm.Clear();
lblPWAttionC.Text = "";
txtMail.Clear();
lblMAttion.Text = "";
chklEate.ClearSelected();
lblHobbyAttention.Text = "";
chkAll.Checked = false;
}
}
}