c# Reflection - Find the Generic Type of a Collection

Question

I\'m reflecting a property \'Blah\' its Type is ICollection

    public ICollection Blah { get; set; }

    private void button1_Click(object sender         


        

Answer 1

I had a similar but much more complicated problem... I wanted to determine if a type is assignable to collection type members or array type members dynamically.

So, here is better way how to get member type of collection or array dynamically with a validation if the type of an object to add is assignable to the collection or the array type members:

        List main = new List() { "str", "řetězec" };
        IComparable[] main0 = new IComparable[] { "str", "řetězec" };
        IEnumerable collection = (IEnumerable)main;
        //IEnumerable collection = (IEnumerable)main0;
        string str = (string) main[0];
        if (collection.GetType().IsArray)
        {
            if (collection.GetType().GetElementType().IsAssignableFrom(str.GetType()))
            {
                MessageBox.Show("Type \"" + str.GetType() + "\" is ok!");
            }
            else
            {
                MessageBox.Show("Bad Collection Member Type");
            }
        }
        else
        {
            if (collection.GetType().GenericTypeArguments[0].IsAssignableFrom(str.GetType()))
            {
                MessageBox.Show("Type \"" + str.GetType() + "\" is ok!");
            }
            else
            {
                MessageBox.Show("Bad Collection Member Type");
            }
        }