C# 程序检查指定类型是否为数组

在 C# 中，数组是一组由通用名称引用的同类元素。所以在本文中，我们将讨论如何检查变量是否为数组类型。为此，我们使用 Type 类的IsArray属性。该属性用于判断指定类型是否为数组。如果指定的类型是数组，IsArray 属性将返回 true。否则，它将返回 false。

句法：

public bool IsArray{get;}

返回：如果值为数组则返回true，否则返回false。

方法

• Import System.Reflection namespace.
• Declare an array with a datatype of a size n.
• Use IsArray is the method to check the type is array or not along with GetType() method. GetType() method method gets the type of the variable.

• If the condition is true then display “Type is array” or if the condition is false then display “Type is not array”.

示例 1：

C#

array.GetType().IsArray

C#

// C# program to determine whether the
// specified type is an array or not
using System;
using System.Reflection;
 
class GFG{
     
static void Main()
{
     
    // Declare an array with size 5
    // of integer type
    int[] array1 = new int[5];
 
    // Check whether the variable is array or not
    // Using IsArray property
    if (array1.GetType().IsArray == true)
    {
        Console.WriteLine("Type is array");
    }
    else
    {
        Console.WriteLine("Type is not array");
    }
}
}

输出：

// C# program to determine whether the
// specified type is an array or not
using System;
using System.Reflection;
 
class GFG{
     
static void Main()
{
 
    // Declare and initializing variables
    int array1 = 45;
    string array2 = "GeeksforGeeks";
    int[] array3 = new int[3];
    double[] array4 = { 2.3, 4.5, 0.33 };
 
    // Check whether the variable is of array type or not
    // Using IsArray property
    Console.WriteLine("Is the type of array1 variable is array?" +
                      array1.GetType().IsArray);
    Console.WriteLine("Is the type of array2 variable is array?" +
                      array2.GetType().IsArray);
    Console.WriteLine("Is the type of array2 variable is array?" +
                      array3.GetType().IsArray);
    Console.WriteLine("Is the type of array2 variable is array?" +
                      array4.GetType().IsArray);
}
}

示例 2：

C＃

Type is array

输出

// C# program to determine whether the
// specified type is an array or not
using System;
using System.Reflection;
 
class GFG{
     
static void Main()
{
 
    // Declare and initializing variables
    int array1 = 45;
    string array2 = "GeeksforGeeks";
    int[] array3 = new int[3];
    double[] array4 = { 2.3, 4.5, 0.33 };
 
    // Check whether the variable is of array type or not
    // Using IsArray property
    Console.WriteLine("Is the type of array1 variable is array?" +
                      array1.GetType().IsArray);
    Console.WriteLine("Is the type of array2 variable is array?" +
                      array2.GetType().IsArray);
    Console.WriteLine("Is the type of array2 variable is array?" +
                      array3.GetType().IsArray);
    Console.WriteLine("Is the type of array2 variable is array?" +
                      array4.GetType().IsArray);
}
}