//字符串操作方法(拼接,截取,下标,替换,分割,去空格,转大小写)string str = " comand ";//截取string s = str.Substring(1,2);//om 从0开始。Console.WriteLine(str.Substring(1, 2));//找下标Console.WriteLine(str.IndexOf ("c"));//字符串拼接Console.WriteLine("你是？"+"你爸爸");//替换str.Replace("c","f");Console.WriteLine(str.Replace("c", "f"));//fomandstring s1 = "aa,bb,cc";string[] arr = s1.Split(',','3');//Split('按什么分割');for (int i = 0; i < arr.Length; i++){Console.Write(arr[i]+" ");}Console.WriteLine(str.Trim());//aa bb cc//转大小写Console.WriteLine(str.ToUpper());//COMAND//转小写就调用 str.ToLower();方法
各大编程语言的字符串操作大同小异,留心总结.
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