C#可以使用哪些数组初始化语法?
当前回答
只是一张纸条
以下阵列:
string[] array = new string[2];
string[] array2 = new string[] { "A", "B" };
string[] array3 = { "A" , "B" };
string[] array4 = new[] { "A", "B" };
将编译为:
string[] array = new string[2];
string[] array2 = new string[] { "A", "B" };
string[] array3 = new string[] { "A", "B" };
string[] array4 = new string[] { "A", "B" };
其他回答
无LINQ重复:
float[] floats = System.Array.ConvertAll(new float[16], v => 1.0f);
如果您想初始化一个预先初始化的相等(非空或非默认)元素的固定数组,请使用以下命令:
var array = Enumerable.Repeat(string.Empty, 37).ToArray();
也请参加本次讨论。
您还可以创建动态数组,即,在创建数组之前,您可以先向用户询问数组的大小。
Console.Write("Enter size of array");
int n = Convert.ToInt16(Console.ReadLine());
int[] dynamicSizedArray= new int[n]; // Here we have created an array of size n
Console.WriteLine("Input Elements");
for(int i=0;i<n;i++)
{
dynamicSizedArray[i] = Convert.ToInt32(Console.ReadLine());
}
Console.WriteLine("Elements of array are :");
foreach (int i in dynamicSizedArray)
{
Console.WriteLine(i);
}
Console.ReadKey();
var contacts = new[]
{
new
{
Name = " Eugene Zabokritski",
PhoneNumbers = new[] { "206-555-0108", "425-555-0001" }
},
new
{
Name = " Hanying Feng",
PhoneNumbers = new[] { "650-555-0199" }
}
};
创建自定义类数组的示例
下面是类定义。
public class DummyUser
{
public string email { get; set; }
public string language { get; set; }
}
这是初始化数组的方法:
private DummyUser[] arrDummyUser = new DummyUser[]
{
new DummyUser{
email = "abc.xyz@email.com",
language = "English"
},
new DummyUser{
email = "def@email.com",
language = "Spanish"
}
};