c# 无法将类型隐式转换

C＃隐式类型数组 (C# Implicitly Typed Arrays)

Like , we can also declare an array without specifying its type such type of arrays are known as Implicitly typed arrays.

像一样，我们也可以在不指定其类型的情况下声明一个数组，这样的数组类型称为隐式类型的数组 。

The type of the array is determined by the compiler based on the initializer list.

数组的类型由编译器根据初始化列表确定。

Syntax:

句法：

var array_name = new[] {initialize_list/elements};

Example:

例：

var arr1 = new[] { 10, 20, 30, 40, 50 };    var arr2 = new[] { 10.0f, 20.1f, 30.2f, 40.3f, 50.4f };    var arr3 = new[] { "Manju", "Amit", "Abhi", "Radib", "Prem" };

Here, arr1 will be determined as int[] (integer array), arr2 as float[] (float/single array), and arr3 as String[] (string array).

在这里，将arr1确定为int [] (整数数组)，将arr2确定为float [] (浮点数/单数组)，将arr3确定为String [] (字符串数组)。

C＃代码演示隐式类型数组的示例 (C# code to demonstrate example of implicitly typed arrays )

using System;using System.Text;namespace Test{
       class Program    {
           static void Main(string[] args)        {
               var arr1 = new[] {
    10, 20, 30, 40, 50 };            var arr2 = new[] {
    10.0f, 20.1f, 30.2f, 40.3f, 50.4f };            var arr3 = new[] {
    "Manju", "Amit", "Abhi", "Radib", "Prem" };            //printing type of the array            Console.WriteLine("Type of arr1: " + arr1.GetType());            Console.WriteLine("Type of arr2: " + arr2.GetType());            Console.WriteLine("Type of arr3: " + arr3.GetType());            //printing the elements            Console.WriteLine("arr1 elements...");            foreach (var item in arr1)            {
                   Console.Write(item + " ");            }            Console.WriteLine();            Console.WriteLine("arr2 elements...");            foreach (var item in arr2)            {
                   Console.Write(item + " ");            }            Console.WriteLine();            Console.WriteLine("arr3 elements...");            foreach (var item in arr3)            {
                   Console.Write(item + " ");            }            Console.WriteLine();            //hit ENTER to exit            Console.ReadLine();        }    }}

Output

输出量

Type of arr1: System.Int32[]Type of arr2: System.Single[]Type of arr3: System.String[]arr1 elements...10 20 30 40 50arr2 elements...10 20.1 30.2 40.3 50.4arr3 elements...Manju Amit Abhi Radib Prem

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c# 无法将类型隐式转换