求一个string数组如何转化为字符串

Question

string [] s=new string(3);
s[1]=a;
s[2]=b;
s[3]=c;想转化成如下格式：
"a,b,c"请问该何如办？

Answer 1

string str = String.Format("{0},{1},{2}",s); //s为数组，str为你要的字符串

Answer 2

string str=string.Join(",", s);

Answer 3

   string[] s = new string[4];
            s[1] = "a";
            s[2] = "b";
            s[3] = "c"; 
            string str=string.Empty;
            foreach (string ss in s)
                str += ss+",";
            str=str.Trim(new char[] { ',' });
            Console.WriteLine(str);

Answer 4

 string   str=string.Concat(s);     StringBuilder   sb=new   StringBuilder();   
  sb.append(s);   
  str=sb.ToString();

Answer 5

string [] s=new string[]{"11","22","33","44"}; string str=string.Join(",", s);//str="11,22,33,44"Join函数专门用来连接

Answer 6

都可以 ·· 如果 用你的 这个方法写··开始应该是：s[0]="a";
或者string [] s=new string[]{"11","22","33","44"}; 
都是OK的···

Answer 7

string str=string.Join(",", s);

Answer 8

string str=null;
for(int i=0;i<s.Length;i++)
{
   if(i==0)
   {
     str+=s[i];
   }else
   {
     str+=","+s[i];
}
}