Question

I have a class with only string members like this :

public class MyClass
{
    public string MyProp1 { get; set; }
    public string MyProp2 { get; set; }
}

I create an instance :

Var myClass = new MyClass();

Later in the code, I’d like to know if all the member (MyProp1 and MyProp2) are not null or empty. I know I can use a if of course but there is much more properties than 2 in my real code.

Is there a way to do this ?

Thanks,

Answer 1

Using a dictionary based store for your properties is probably the easiest way of doing this:

public class MyClass
{
    private IDictionary<String, String> _store;

    public MyClass()
    {
        _store = new Dictionary<String, String>();
    }

    public string MyProp1 { 
        get { return GetOrDefault("MyProp1"); }
        set { _store["MyProp1"] = value; }
    }
    public string MyProp2 { 
        get { return GetOrDefault("MyProp2"); }
        set { _store["MyProp2"] = value; }
    }

    public Boolean HasData()
    {
        return _store.Any(x => !String.IsNullOrWhiteSpace(x.Value));
    }

    public Boolean IsEmpty()
    {
        return _store.All(x => String.IsNullOrWhiteSpace(x.Value));
    }   

    private String GetOrDefault(String propertyName)
    {
        if (_store.ContainsKey(propertyName))
        {
            return _store[propertyName];
        }

        return String.Empty;
    }
}

Another method for doing this would be to compare it with a default instance:

public class MyClass
{
    public string MyProp1 { get; set; }
    public string MyProp2 { get; set; }

    public static readonly MyClass Empty = new MyClass();

    public Boolean HasData()
    {
        return !Empty.Equals(this);
    }

    public Boolean IsEmpty()
    {
        return Empty.Equals(this);
    }
}