本文整理匯總了C#中System.Array.Exists<T>方法的典型用法代碼示例。如果您正苦於以下問題：C# Array.Exists<T>方法的具體用法？C# Array.Exists<T>怎麽用？C# Array.Exists<T>使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類System.Array的用法示例。
在下文中一共展示了Array.Exists<T>方法的3個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的C#代碼示例。
示例1: Main
//引入命名空間
using System;
namespace Example
{
class Program
{
static void Main(string[] args)
{
string[] planets = { "Mercury", "Venus",
"Earth", "Mars", "Jupiter",
"Saturn", "Uranus", "Neptune" };
Console.WriteLine("One or more planets begin with 'M': {0}",
Array.Exists(planets, element => element.StartsWith("M")));
Console.WriteLine("One or more planets begin with 'T': {0}",
Array.Exists(planets, element => element.StartsWith("T")));
Console.WriteLine("Is Pluto one of the planets? {0}",
Array.Exists(planets, element => element == "Pluto"));
}
}
}輸出：
One or more planets begin with 'M': True One or more planets begin with 'T': False Is Pluto one of the planets? False
示例2: Main
//引入命名空間
using System;
public class Example
{
public static void Main()
{
String[] names = { "Adam", "Adel", "Bridgette", "Carla",
"Charles", "Daniel", "Elaine", "Frances",
"George", "Gillian", "Henry", "Irving",
"James", "Janae", "Lawrence", "Miguel",
"Nicole", "Oliver", "Paula", "Robert",
"Stephen", "Thomas", "Vanessa",
"Veronica", "Wilberforce" };
Char[] charsToFind = { 'A', 'K', 'W', 'Z' };
foreach (var charToFind in charsToFind)
Console.WriteLine("One or more names begin with '{0}': {1}",
charToFind,
Array.Exists(names, (new StringSearcher(charToFind)).StartsWith));
}
}
public class StringSearcher
{
Char firstChar;
public StringSearcher(Char firstChar)
{
this.firstChar = Char.ToUpper(firstChar);
}
public bool StartsWith(String s)
{
if (String.IsNullOrEmpty(s)) return false;
if(s.Substring(0, 1).ToUpper() == firstChar.ToString())
return true;
else
return false;
}
}輸出：
One or more names begin with 'A': True One or more names begin with 'K': False One or more names begin with 'W': True One or more names begin with 'Z': False
示例3: Main
//引入命名空間
using System;
public class Example
{
public static void Main()
{
String[] names = { "Adam", "Adel", "Bridgette", "Carla",
"Charles", "Daniel", "Elaine", "Frances",
"George", "Gillian", "Henry", "Irving",
"James", "Janae", "Lawrence", "Miguel",
"Nicole", "Oliver", "Paula", "Robert",
"Stephen", "Thomas", "Vanessa",
"Veronica", "Wilberforce" };
Char[] charsToFind = { 'A', 'K', 'W', 'Z' };
foreach (var charToFind in charsToFind)
Console.WriteLine("One or more names begin with '{0}': {1}",
charToFind,
Array.Exists(names,
s => { if (String.IsNullOrEmpty(s))
return false;
if (s.Substring(0, 1).ToUpper() == charToFind.ToString())
return true;
else
return false;
} ));
}
}輸出：
One or more names begin with 'A': True One or more names begin with 'K': False One or more names begin with 'W': True One or more names begin with 'Z': False