foreach & Random

using System;
public class ForEachTest
{
    public static void Main()
    {
        int odd=0;
        int eve=0;
        int length=100;
        int[] arr=new int[length];
        Random r = new Random();
        for(int i=0;i<length;i++)  //随机数赋值
        {
            arr[i]= r.Next();
        }    
        foreach(int tem in arr)  //foreach 举例
        {
            if(tem%2==0)
                eve++;
            else
                odd++;
        }
        Console.WriteLine("奇数"+odd+"个");
        Console.WriteLine("偶数"+eve+"个");
    }    
}

 foreach (DataGridViewRow row in kDataGridView1.Rows)
                {
                    switch(row.Cells["state"].Value.ToString())
                    {
                        case "0":
                            row.Cells["state"].Value = "未用";
                            break;
                        case "1":
                            row.Cells["state"].Value = "正常";
                            break;
                        case "2":
                            row.Cells["state"].Value = "停用";
                            break;
                        case "3":
                            row.Cells["state"].Value = "废弃";
                            break;
                        case "4":
                            row.Cells["state"].Value = "挂失";
                            break;
                        default:
                            row.Cells["state"].Value = " ";
                            break;
                    
                    }
                }