Why we need to constructor inside a model in ASP.NET MVC using C#, and what is the purpose of this?

Question

public class TagVM
{
    public string TagName { get; set; }
}

public class TagListVM
{
    public List<TagVM> TagList { get; set; }

    public TagListVM()
    {
        TagList = new List<TagVM>();
    }
}

Why do we use TagListVM constructor and what is purpose of it?

Answer 1

Without the constructor TagList will be null (unless you initialize it elsewhere).

for more refer this Model with constructor vs. Model without constructor ASP.NET MVC