C#验证：正则表达式 验证类和界面处理（手机号码，邮箱，IP地址）

使用步骤:

1.创建验证类

2.界面调用验证类中的方法进行验证

实例代码演示如下

1.创建验证类

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;

namespace Mobot.TeamFoundation.Client.UI.Users
{
public class Validator
{
/// <summary>
/// 验证手机号码
/// </summary>
/// <param name="source"></param>
/// <returns></returns>
public static bool IsMobilePhone(string source)
{
return Regex.IsMatch(source, @"^1[358]\d{9}$", RegexOptions.IgnoreCase);
}
/// <summary>
/// 验证邮箱
/// </summary>
/// <param name="source"></param>
/// <returns></returns>
public static bool IsEmail(string source)
{
return Regex.IsMatch(source, @"^[A-Za-z0-9](([_\.\-]?[a-zA-Z0-9]+)*)@" +
@"([A-Za-z0-9]+)(([\.\-]?[a-zA-Z0-9]+)*)\.([A-Za-z]{2,})$", RegexOptions.IgnoreCase);
}
}
}

2.界面调用验证类中的方法进行验证

private void btnAdd_Click(object sender, EventArgs e)
{
if (string.IsNullOrEmpty(txtUserName.Text)||this.txtUserName.Text.Trim().Length>50)
{
XtraMessageBox.Show("用户名不能为空，且字符不能超过50个！", "提示信息", MessageBoxButtons.OK, MessageBoxIcon.Information);
txtUserName.Focus();
txtUserName.SelectAll();
return;
}
if (string.IsNullOrEmpty(txtDisplayName.Text) || this.txtDisplayName.Text.Trim().Length > 50)
{
XtraMessageBox.Show("显示名不能为空，且字符不能超过50个！", "提示信息", MessageBoxButtons.OK, MessageBoxIcon.Information);
txtDisplayName.Focus();
txtDisplayName.SelectAll();
return;
}
if (!Validator.IsMobilePhone(txtPhoneNumber.Text.Trim()))
{
XtraMessageBox.Show("请检查手机号是否输入有误！", "提示信息", MessageBoxButtons.OK, MessageBoxIcon.Information);
cbbRoleId.Focus();
this.txtPhoneNumber.Focus();
this.txtPhoneNumber.SelectAll();
return;
}
if (!Validator.IsEmail(this.txtEmail.Text.Trim()))
{
MessageBox.Show("邮箱地址格式不正确！", "系统提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);
this.txtEmail.Focus();
this.txtEmail.SelectAll(); ;
return;
}
if (this.cbbRoleId.SelectedIndex == -1)
{
MessageBox.Show("请选择角色！", "系统提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);
this.cbbRoleId.Focus();
return;
}

}

杂记:下面是本人的邮箱另一种简单验证,可行性还求高人指点,是否可行?

if (!this.txtEmail.Text.Trim().Contains("@"))
{
MessageBox.Show("邮箱地址格式不正确！", "系统提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);
this.txtEmail.Focus();
this.txtEmail.SelectAll(); ;
return;
}
if (this.txtEmail.Text.Trim().Length == 0 || this.txtEmail.Text.Trim().Length > 50)
{
MessageBox.Show("邮箱不能为空，且字符不能超过50个！", "系统提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);
this.txtEmail.Focus();
this.txtEmail.SelectAll(); ;
return;
}
if (!Validator.IsEmail(this.txtEmail.Text.Trim()))
{
MessageBox.Show("邮箱地址格式不正确！", "系统提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);
this.txtEmail.Focus();
this.txtEmail.SelectAll(); ;
return;
}

补充:验证服务端IP @2013.01.29

/// <summary>
/// 验证服务端IP
/// </summary>
/// <returns></returns>
public static bool ValidateIpAddress(string ip, out string msg)
{
msg = string.Empty;
string strReg = @"^(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9])\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[0-9])$";
System.Text.RegularExpressions.Regex regex = new System.Text.RegularExpressions.Regex(strReg);
if (!regex.IsMatch(ip))
{
msg = "配置的IP地址格式不正确!";
return false;
}
return true;
}