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字符串的高效处理String‘Builder类（高频率的字符串拼接）

news 2025/8/2 7:02:07

1：Append方法：在结尾追加

namespace ConsoleApp2
{class Program{static void Main(string[] args){StringBuilder stringBuilder = new StringBuilder();stringBuilder.Append("A");stringBuilder.Append("B");stringBuilder.Append("C");string result = stringBuilder.ToString();//得到字符串必须用Tostring()方法 Console.WriteLine(result);stringBuilder.Clear();//移除Console.WriteLine(stringBuilder.ToString());Console.ReadKey();}}}

2：Insert方法：在指定位置插入指定字符串

namespace ConsoleApp2
{class Program{static void Main(string[] args){StringBuilder stringBuilder = new StringBuilder();stringBuilder.Append("ABCEF");int Result = stringBuilder.ToString().IndexOf("E");stringBuilder.Insert(Result, "D");string result = stringBuilder.ToString();//得到字符串必须用Tostring()方法 Console.WriteLine(result);Console.ReadKey();}}}

3：Remove:移除指定字符串

namespace ConsoleApp2
{class Program{static void Main(string[] args){StringBuilder stringBuilder = new StringBuilder();stringBuilder.Append("ABCEF");int Result = stringBuilder.ToString().IndexOf("E");stringBuilder.Remove(Result,2);string result = stringBuilder.ToString();//得到字符串必须用Tostring()方法 Console.WriteLine(result);Console.ReadKey();}}}

4:AppendFormat方法：追加的同时格式化

namespace ConsoleApp2
{class Program{static void Main(string[] args){StringBuilder stringBuilder = new StringBuilder();stringBuilder.AppendFormat("{0}{1}{2}","A","B","C");string result = stringBuilder.ToString();//得到字符串必须用Tostring()方法 Console.WriteLine(result);Console.ReadKey();}}}