不能char类型转换为字符串 | 不能char类型转换为字符串

本文介绍了不能char类型转换为字符串的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我做的，涉及阵列在C＃中的数据，当我使用foreach循环它给了我一个消息

int[,] tel = new int[4, 8];
tel[0, 0] = 398;
tel[0, 1] = 3333;
tel[0, 2] = 2883;
tel[0, 3] = 17698;
tel[1, 0] = 1762;
tel[1, 1] = 176925;
tel[1, 2] = 398722;
tel[2, 0] = 38870;
tel[3, 1] = 30439;

foreach (string t in tel.ToString())
{
    Console.WriteLine(tel +" " +"is calling");
    Console.ReadKey();
}

解决方案

That is becuase when you foreach over a string each value will be a char, but you are trying to cast them to string.

 foreach(string t in tel.ToString())

But it's unlikely that you want to foreach on tel.ToString() as the will return the name of the type of tel (System.Int32[,]). Instead you probably want to iterate all the values in tel

for(int i=0; i<4; i++)
{
    for(int j=0; j<8; j++)
    {
        Console.WriteLine(tel[i,j] +" is calling");
        Console.ReadKey();
    }
}

foreach(int t in tel)
{
    Console.WriteLine(t +" is calling");
    Console.ReadKey();
}

Note that some of the values will be zero since you do not assign values to all the positions in the tel array.

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