1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Text;
 5 using System.Threading.Tasks;
 6 
 7 namespace Out_Key
 8 {
 9     class Program
10     {
11         ///<summary>
12         ///求数组的最大值和最大值的索引
13         ///</summary>
14         ///<param name="m_Array" >传入的数组</param>
15         ///<param name="m_Index" >要求的最大索引</param>
16         ///<returns >数组中的最大值</returns>
17         static int MaxIndex(int[] m_Array, out int m_Index)
18         {
19             m_Index = 0;
20             int m_Max = m_Array[0];
21 
22             for (int i = 0; i < m_Array.Length; i++)
23             {
24                 if (m_Array[i] > m_Max)
25                 {
26                     m_Max = m_Array[i];
27                     m_Index = i;
28                 }
29             }
30 
31             return m_Max;
32         }
33         static void Main(String[] args)
34         {
35             int[] myArray = new int[5] { 56, 89, 425, 21, 21 };
36             int maxIndex;
37             Console.WriteLine("数组中最大的值为:{0}", MaxIndex(myArray, out maxIndex));
38             //调用MaxIndex方法后  maxIndex的值为2
39             Console.WriteLine("数组中最大的值是第{0}元素", maxIndex + 1);
40             Console.ReadKey();
41         }
42     }
43 }

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Text;
 4 
 5 namespace sampsong
 6 {
 7     class Program1
 8     {
 9         static void Method(out String name,out String sex)
10         {
11             name = "张三";
12             sex="男";
13         }
14 
15         static void Main(String[] args)
16         {
17             String Name;
18             String Sex;
19 
20             Method(out Name,out Sex);
21             Console.WriteLine("调用方法Method后");
22             Console.WriteLine("学生" + Name + "性别是:"+Sex );
23         }
24     }
25 }    

 1   static void Method(out int i)
 2         {
 3             i = 44;
 4         }
 5         static void Main()
 6         {
 7             int value;
 8             Method(out value);
 9             Console.Write(value);
10             // value is now 44
11             Console.ReadKey();
12         }

class class Program
{
        public void TestMethod(out int i) {    }
        public void TestMethod(ref int i) {    }
}

 public void TestMethod(int i) { }
 public void TestMethod(out int i) {
            i = 1;
 }

 1 class Program
 2 {
 3         static void Method(out int a, out string b, out string c)
 4         {
 5                 a = 44;
 6                 b = "I've been returned";
 7                 c= null;
 8         }
 9         static void Main()
10         {
11                 int value;
12                 string str1, str2;
13                 Method(out value, out str1, out str2);
14         }
15 }

static void main()
{
   int a = 20;
   int b = 30;
   int c;
   SwapMethod(ref a, ref b);
   Console.WriteLine(" After Swap a is {0},b is {1} ",a,b);

   OutTest(out c);
   Console.WriteLine("The out value is {0}.",c);
}

static void SwapMethod(ref int a,ref int b)
{
     int tem;
     tem = a;
     a = b;
     b = tem;
}

static void OutTest(out int a)
{
   a = 10 * 10;
}