ตรวจสอบว่าอาร์เรย์เป็นแบบอ่านอย่างเดียวหรือไม่ใน C #

หากต้องการตรวจสอบว่าอาร์เรย์เป็นแบบอ่านอย่างเดียวหรือไม่ ให้ลองใช้โค้ดด้านล่าง −

ตัวอย่าง

using System;
public class Demo {
   public static void Main(){
      string[] products = new string[] { };
      Console.WriteLine("One or more planets begin with 'E'? = {0}",
         Array.Exists(products, ele => ele.StartsWith("E")));
      Console.WriteLine("Is the array having fixed size? = " + products.IsFixedSize);
      Console.WriteLine("Is the array read only? = " + products.IsReadOnly);
   }
}

ผลลัพธ์

สิ่งนี้จะสร้างรหัสต่อไปนี้ -

One or more planets begin with 'E'? = False
Is the array having fixed size? = True Is the array read only? = False

ตัวอย่าง

เรามาดูตัวอย่างกัน −

using System;
public class Demo {
   public static void Main(){
      string[] products = { "Mobiles", "Laptop", "Watches", "Books" };
      Console.WriteLine("Products list...");
      foreach(string s in products){
         Console.WriteLine(s);
      }
      Console.WriteLine("\nOne or more products begin with the letter 'C'? = {0}",
         Array.Exists(products, ele => ele.StartsWith("C")));
      Console.WriteLine("One or more planets begin with 'D'? = {0}",
         Array.Exists(products, ele => ele.StartsWith("D")));
      Console.WriteLine("One or more products begin with the letter 'T'? = {0}",
         Array.Exists(products, ele => ele.StartsWith("T")));
      Console.WriteLine("One or more planets begin with 'E'? = {0}",
         Array.Exists(products, ele => ele.StartsWith("E")));
      Console.WriteLine("Is the array read only? = " + products.IsReadOnly);
   }
}

ผลลัพธ์

สิ่งนี้จะสร้างรหัสต่อไปนี้ -

Products list...
Mobiles
Laptop
Watches
Books
One or more products begin with the letter 'C'? = False
One or more planets begin with 'D'? = False
One or more products begin with the letter 'T'? = False
One or more planets begin with 'E'? = False
Is the array read only? = False