C#一個方法返回多個值

示例代碼：

 1 static void Main(string[] args) 2         { 3             //聲明 4             int value; 5             string strOutValue; 6  7             //調用函數 8             //函數的參數有兩個返回的值 9             ReturnMulValue(out strOutValue,out value);10 11             Console.WriteLine("Call ReturnMulValue(out string strOut, out int i)");12             Console.WriteLine("value = {0:N}", value);//value = 1.0013             Console.WriteLine("Out string value = " + strOutValue); //Out string value = out function14 15 16             //調用函數 http://m.survivalescaperooms.com/roucheng/17             //函數原返回值與參數中均得到返回的值18             value = ReturnMulValue(out strOutValue);19 20             Console.WriteLine("Call ReturnMulValue(out string strOut)");21             Console.WriteLine("value = {0:N}", value);//value = 2.0022             Console.WriteLine("Out string value = " + strOutValue);//Out string value = out function 223 24             //聲明25             int[] outArr;26             //調用函數27             //函數返回數組28             ReturnMulArr(out outArr, out value);29 30             Console.WriteLine("Call ReturnMulArr(out int[] arr, out int i)");31             Console.WriteLine("value = {0:N}", value);//value = 3.0032             Console.WriteLine("Out arr value ");33 34             for (int j = 0; j < outArr.Length; j++)35             {36                 Console.Write(outArr[j]);//1234537             }38         }39 40         /// <summary>41         /// 返回多個值，原函數返回空42         /// </summary>43         /// <param name="strOut">使用out關鍵字返回的字符串</param>44         /// <param name="i">使用out關鍵字返回的數值</param>45         static void ReturnMulValue(out string strOut, out int i)46         {47             i = 1;48             strOut = "out function";49         }50 51         /// <summary>52         /// 返回多個值，原函數返回數值53         /// </summary>54         /// <param name="strOut">使用out關鍵字返回的字符串</param>55         /// <returns>原函數直接返回的數值</returns>56         static int ReturnMulValue(out string strOut)57         {58             int i = 2;59             strOut = "out function 2";60             return i;61         }62 63 64         /// <summary>65         /// 返回數組66         /// </summary>67         /// <param name="arr">使用out關鍵字返回的數組</param>68         /// <param name="i">使用out關鍵字返回的數值</param>69         static void ReturnMulArr(out int[] arr, out int i)70         {71             arr = new int[5] { 1, 2, 3, 4, 5};72             i = 3;73         }

C#中有兩種方法可以在函數中返回多個值，關鍵字是out和ref。