List add extension with properties

Question

I can best explain this by showing a example of what I wish

I have a model

public class TestModel
{
    public int Test1 { get; set; }
    public string Test2 { get; set; }
}

I make a list

List<TestModel> testList = new List<TestModel>

now originally when I add a item I should use

testList.Add(new TestModel { Test1 = 1, Test2 = "Test" });

but what I wish to be able to do is

testList.Add(1, "Test")

Is there any way to accomplish this ?

Answer 1

You could use an extension method to do it, but I wouldn't personally.

public static class TestModelListExtensions
{
    public static void Add(this List<TestModel> list, int test1, string test2)
    {
        list.Add(new TestModel { Test1 = test1, Test2 = test2 });  
    }
}

class Program
{

    static void Main(string[] args)
    {
        List<TestModel> list = new List<TestModel>();
        list.Add(1, "hello");
    }
}

Answer 2

You could create a constructor of your TestModel and do:

testList.Add(new TestModel(1, "Test"));

public class TestModel
{
    public int Test1 { get; set; }
    public string Test2 { get; set; }

    public TestModel(int test1, string test2) 
    {
        Test1 = test1;
        Test2 = test2;
    }
}

Answer 3

try this

public static class Extensions {

    public static List<TestModel> Add(this List<TestModel> list, int test1, string test2)   {
        return list.Add(new TestModel { Test1 = test1, Test2 = test2 });
    }
}