StringBuilder sb = new StringBuilder("hello");
sb.Append("world");//拼接
sb.Insert(5,",");//插入
sb.Replace(",","-");//替换
//sb.Remove(2,3);//删除
Console.WriteLine(sb);
2022-02-13 23:28:18
StringBuilder sb = new StringBuilder("hello");
sb.Append("world");//拼接
sb.Insert(5,",");//插入
sb.Replace(",","-");//替换
//sb.Remove(2,3);//删除
Console.WriteLine(sb);