C#去掉字符串最后一位字符

字符串：string s = "1,2,3,4,5,"
目標：刪除最后一個 ","

方法：
1、用的最多的是Substring，這個也是我一直用的
s = s.Substring(0,s.Length - 1)
2、用TrimEnd,這個東西傳遞的是一個字符數組

s=s.TrimEnd(',')
//如果要刪除"5,"，則需要這么寫
char[] MyChar = {'5',','};
s = s.TrimEnd(MyChar);

//s = "1,2,3,"
3、用Remove
string a = "123";
a = a.Remove(a.Length - 1,1); //移除掉","