• admin
• September 25, 2023
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In this post, I am going to explain how we can convert an generic list to simple int array with Help of Linq. Recently, I was working on an application and there I needed an Int array of for list of ids in generic list. I tried various methods and then with the help of ‘Select’ operator and ToArray method I have easily converted an generic list to the int array. Lets take a simple example. I need a contact id list from a generic list of contacts and following is my contact class.

public class Contact
{
    public int ContactId { get; set; }
    public string Name { get; set; }
}

Now I have created a new GetContacts methods to create a new Generic List of Contacts.

private static List GetContacts() {
    List contacts=new List();

    for (int i = 1; i  c.ContactId).ToArray();

    foreach (int contactId in contactIds) {
        Console.WriteLine(contactId);
    }
}

Here you can see with Select Operator and ToArray method I can easily convert a list into array. Let’s run the example

.

Hope you like it. Stay tuned for more..