最新下载
热门教程
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
正则表达式应用范例（转）
时间：2022-06-30 11:52:31 编辑：袖梨 来源：一聚教程网
The following example shows the use of Regular Expresssions in C#.This program has basic validation scripts for validation easily useable in all programs.
/*
csc /r:System.Text.RegularExpressions.dll,System.dll Validation.cs
*/
using System.Text.RegularExpressions;
using System;
class Validation
{
public static void Main()
{
String strToTest;
Validation objValidate=new Validation();
Console.Write("Enter a String to Test for Alphabets:");
strToTest=Console.ReadLine();
if(objValidate.IsAlpha(strToTest))
{
Console.WriteLine("{0} is Valid Alpha String",strToTest);
}
else
{
Console.WriteLine("{0} is not a Valid Alpha String",strToTest);
}
}
// Function to test for Positive Integers.
public bool IsNaturalNumber(String strNumber)
{
Regex objNotNaturalPattern=new Regex("[^0-9]");
Regex objNaturalPattern=new Regex("0*[1-9][0-9]*");
return !objNotNaturalPattern.IsMatch(strNumber) &&
objNaturalPattern.IsMatch(strNumber);
}
// Function to test for Positive Integers with zero inclusive
public bool IsWholeNumber(String strNumber)
{
/*
csc /r:System.Text.RegularExpressions.dll,System.dll Validation.cs
*/
using System.Text.RegularExpressions;
using System;
class Validation
{
public static void Main()
{
String strToTest;
Validation objValidate=new Validation();
Console.Write("Enter a String to Test for Alphabets:");
strToTest=Console.ReadLine();
if(objValidate.IsAlpha(strToTest))
{
Console.WriteLine("{0} is Valid Alpha String",strToTest);
}
else
{
Console.WriteLine("{0} is not a Valid Alpha String",strToTest);
}
}
// Function to test for Positive Integers.
public bool IsNaturalNumber(String strNumber)
{
Regex objNotNaturalPattern=new Regex("[^0-9]");
Regex objNaturalPattern=new Regex("0*[1-9][0-9]*");
return !objNotNaturalPattern.IsMatch(strNumber) &&
objNaturalPattern.IsMatch(strNumber);
}
// Function to test for Positive Integers with zero inclusive
public bool IsWholeNumber(String strNumber)
{
相关文章
- 《弓箭传说2》新手玩法介绍 01-16
- 《地下城与勇士：起源》断桥烟雨多买多送活动内容一览 01-16
- 《差不多高手》醉拳龙技能特点分享 01-16
- 《鬼谷八荒》毕方尾羽解除限制道具推荐 01-16
- 《地下城与勇士：起源》阿拉德首次迎新春活动内容一览 01-16
- 《差不多高手》情圣技能特点分享 01-16