StartsWith()
C#中的方法用于确定此字符串实例的开头是否与指定的字符串匹配。
public bool StartsWith (string val);
上面的val是要比较的字符串。
using System; public class Demo { public static void Main() { string str = "JohnAndJacob"; Console.WriteLine("String = "+str); Console.WriteLine("Does String begins with J? = "+str.StartsWith("J")); char[] destArr = new char[20]; str.CopyTo(1, destArr, 0, 4); Console.Write(destArr); } }
输出结果
这将产生以下输出-
String = JohnAndJacob Does String begins with J? = True ohnA
现在让我们来看另一个例子-
using System; public class Demo { public static void Main(String[] args) { string str1 = "Akon"; string str2 = "Eminem"; Console.WriteLine("String 1 = "+str1); Console.WriteLine("HashCode of String 1 = "+str1.GetHashCode()); Console.WriteLine("Does String1 begins with E? = "+str1.StartsWith("E")); Console.WriteLine("\nString 2 = "+str2); Console.WriteLine("HashCode of String 2 = "+str2.GetHashCode()); Console.WriteLine("Does String2 begins with E? = "+str2.StartsWith("E")); Console.WriteLine("\nString 1 is equal to String 2? = {0}", str1.Equals(str2)); } }
输出结果
这将产生以下输出-
String 1 = Akon HashCode of String 1 = 416613838 Does String1 begins with E? = False String 2 = Eminem HashCode of String 2 = 40371907 Does String2 begins with E? = True String 1 is equal to String 2? = False