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Check if an array is read-only or not in C#
To check if an array is read-only or not, try the below code −
Example
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);
}
}Output
This will produce the following code −
One or more planets begin with 'E'? = False Is the array having fixed size? = True Is the array read only? = False
Example
Let us see another example −
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("
One 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);
}
}Output
This will produce the following code −
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
Updated on: 04-Dec-2019
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