下面的代码哪里错了
using System;
using System.Collections.Generic;
using System.Text;
namespace projGetMaxScore
{
class Program
{
static void Main(string[] args)
{string[,]ch= new string[,]={{吴松,89},{钱东宇,90},{伏晨,98},{陈陆,56},{周蕊,60},{林日鹏,91},{何昆,93},{关欣,85}};
int max = Convert.ToInt32(ch[1, 0]);
for(int i=0;i<ch.LongLength;i++)
{
if(max< Convert.ToInt32(ch[i,1]))
{
max=Convert.ToInt32(ch[i,1];
}
Console.Write("分数最高的是"+"ch[i,0]"+",");
Console.Write("分数是"+ch[i,1]);
}
}
}
}