日期 时间 正则表达式

　【日期的验证表达式】

　　A.以下正确的输入格式： [2004-2-29], [2004-02-29 10:29:39 pm], [2004/12/31]

^((\d{2}(([02468][048])|([13579][26]))[\-\/\s]?((((0?[13578])|(1[02]))[\-\/\s]?((0?[1-9])|([1-2][0-9])|(3[01])))|(((0?[469])|(11))[\-\/\s]?((0?[1-9])|([1-2][0-9])|(30)))|(0?2[\-\/\s]?((0?[1-9])|([1-2][0-9])))))|(\d{2}(([02468][1235679])|([13579][01345789]))[\-\/\s]?((((0?[13578])|(1[02]))[\-\/\s]?((0?[1-9])|([1-2][0-9])|(3[01])))|(((0?[469])|(11))[\-\/\s]?((0?[1-9])|([1-2][0-9])|(30)))|(0?2[\-\/\s]?((0?[1-9])|(1[0-9])|(2[0-8]))))))(\s(((0?[1-9])|(1[0-2]))\:([0-5][0-9])((\s)|(\:([0-5][0-9])\s))([AM|PM|am|pm]{2,2})))?$


具体使用:
日期:<asp:TextBox id="TextBox1" runat="server"></asp:TextBox>
<asp:RegularExpressionValidator id="RegularExpressionValidator1" runat="server" ErrorMessage="日期格式错误!"
      ControlToValidate="TextBox1" ValidationExpression="^((\d{2}(([02468][048])|([13579][26]))[\-\/\s]?((((0?[13578])|(1[02]))[\-\/\s]?((0?[1-9])|([1-2][0-9])|(3[01])))|(((0?[469])|(11))[\-\/\s]?((0?[1-9])|([1-2][0-9])|(30)))|(0?2[\-\/\s]?((0?[1-9])|([1-2][0-9])))))|(\d{2}(([02468][1235679])|([13579][01345789]))[\-\/\s]?((((0?[13578])|(1[02]))[\-\/\s]?((0?[1-9])|([1-2][0-9])|(3[01])))|(((0?[469])|(11))[\-\/\s]?((0?[1-9])|([1-2][0-9])|(30)))|(0?2[\-\/\s]?((0?[1-9])|(1[0-9])|(2[0-8]))))))(\s(((0?[1-9])|(1[0-2]))\:([0-5][0-9])((\s)|(\:([0-5][0-9])\s))([AM|PM|am|pm]{2,2})))?$"></asp:RegularExpressionValidator>
     <asp:Button id="Button2" runat="server" Text="确认"></asp:Button>


判断日期2      2004-04-30 00:00:00

public class Class1
{
 static void Main(string[] args)
 {
 // string regex = @"^((\d{2}(([02468][048])|([13579][26]))[\-\/\s]?((((0?[13578])|(1[02]))[\-\/\s]?((0?[1-9])|([1-2][0-9])|(3[01])))|(((0?[469])|(11))[\-\/\s]?((0?[1-9])|([1-2][0-9])|(30)))|(0?2[\-\/\s]?((0?[1-9])|([1-2][0-9])))))|(\d{2}(([02468][1235679])|([13579][01345789]))[\-\/\s]?((((0?[13578])|(1[02]))[\-\/\s]?((0?[1-9])|([1-2][0-9])|(3[01])))|(((0?[469])|(11))[\-\/\s]?((0?[1-9])|([1-2][0-9])|(30)))|(0?2[\-\/\s]?((0?[1-9])|(1[0-9])|(2[0-8]))))))(\s(((0?[0-9])|([1-2][0-3]))\:([0-5]?[0-9])((\s)|(\:([0-5]?[0-9])))))?$";
  string regex = @"^((\d{2}(([02468][048])|([13579][26]))[\-\/\s]?((((0?[13578]
)|(1[02]))[\-\/\s]?((0?[1-9])|([1-2][0-9])|(3[01])))|(((0?[4
69])|(11))[\-\/\s]?((0?[1-9])|([1-2][0-9])|(30)))|(0?2[\-\/\
s]?((0?[1-9])|([1-2][0-9])))))|(\d{2}(([02468][1235679])|([1
3579][01345789]))[\-\/\s]?((((0?[13578])|(1[02]))[\-\/\s]?((
0?[1-9])|([1-2][0-9])|(3[01])))|(((0?[469])|(11))[\-\/\s]?((
0?[1-9])|([1-2][0-9])|(30)))|(0?2[\-\/\s]?((0?[1-9])|(1[0-9]
)|(2[0-8]))))))"; //日期部分
  regex += @"(\s(((0?[0-9])|([1-2][0-3]))\:([0-5]?[0-9])((\s)|(\:([0-5]?[0-9])))))?$"; //时间部分
  System.Text.RegularExpressions.RegexOptions options = ((System.Text.RegularExpressions.RegexOptions.IgnorePatternWhitespace | System.Text.RegularExpressions.RegexOptions.Multiline) | System.Text.RegularExpressions.RegexOptions.IgnoreCase);
  System.Text.RegularExpressions.Regex reg = new System.Text.RegularExpressions.Regex(regex, options);

  string s = "2003-02-29 23:59:59";
  System.Console.Out.WriteLine(s + " {0}",reg.IsMatch(s));
  
  s = "2004-02-29 23:59:59";
  System.Console.Out.WriteLine(s + " {0}",reg.IsMatch(s));
  
  s = "2004-04-30 0:59:59";
  System.Console.Out.WriteLine(s + " {0}",reg.IsMatch(s));

  s = "2004-04-30 01:11:0";
  System.Console.Out.WriteLine(s + " {0}",reg.IsMatch(s));

  s = "2004-04-30 0:0:0";
  System.Console.Out.WriteLine(s + " {0}",reg.IsMatch(s));

  s = "2004-04-30 00:00:00";
  System.Console.Out.WriteLine(s + " {0}",reg.IsMatch(s));
 }
}
运行截图

判断输入的是否全是数字/字母.

using System.Text.RegularExpressions;

  private void Button3_Click(object sender, System.EventArgs e)
  {
   string str = this.TextBox2.Text.Trim();
   System.Text.RegularExpressions.Regex strRegex = new Regex(@"[0-9]",RegexOptions.IgnoreCase);
   //MatchCollection metches = strRegex.Matches(str);
   if(strRegex.Matches(str).Count == str.Length)
   {
    Response.Write("<br>输入的全是数");
   }
   System.Text.RegularExpressions.Regex strRegex2 = new Regex(@"[a-z]",RegexOptions.IgnoreCase);
   if(strRegex2.Matches(str).Count == str.Length)
   {
    Response.Write("输入的全是字母");
   }
  }

转自：http://www.cnblogs.com/adandelion/articles/262205.html