Question

I have POCO object MyObject

public class MyModel
{
    public MyProperty MyProperty001 { get; set; }
    public MyProperty MyProperty002 { get; set; }


    MyModel()
    {
        // New up all the public properties
        var properties = GetType().GetProperties(BindingFlags.Public | BindingFlags.Instance);

        foreach (var propertyInfo in properties)
        {
            //Activator.CreateInstance()
        }
    }
}

that has hundreds of properties, is it possible using reflection to instantiate these in the constructor? I have the PropertyInfo, but don’t know what is the next step.

Thank you,
Stephen

Answer 1

Type of property holds within of PropertyType property of PropertyInfo object, so according to that you can instantiate your objects by calling Activator.CreateInstance(propertyInfo.PropertyType). Than you need to set instance into property of your container object by calling propertyInfo.SetValue(this, instance, null)

Full sample:

foreach (var propertyInfo in properties) 
{
    var instance = Activator.CreateInstance(propertyInfo.PropertyType);
    propertyInfo.SetValue(this, instance, null);
}