Name of object within another object

I have a class called Prescriptions. It has properties that are other classes. So, for example, a property name of Fills would be from the PDInt class which has other properties about the value that I need.

If I want to set the value of the Fills property in the Prescription class it would be something like

Prescription p = new Prescription(); p.Fills开发者_运维知识库.Value = 33;

So now I want to take the name of the Fills property and stuff it in a the tag property in a winform control.

this.txtFills.Tag = p.Fills.GetType().Name;

However when I do this, I get the base class of the property, not the property name. So instead of getting "Fills", I get "PDInt".

How do I get the instantiated name of the property?

Thank you.

Below is an extension method that I use it when I wanna work like you:

public static class ModelHelper
{
    public static string Item<T>(this T obj, Expression<Func<T, object>> expression)
    {
        if (expression.Body is MemberExpression)
        {
            return ((MemberExpression)(expression.Body)).Member.Name;
        }
        if (expression.Body is UnaryExpression)
        {
            return ((MemberExpression)((UnaryExpression)(expression.Body)).Operand)
                    .Member.Name;
        }
        throw new InvalidOperationException();
    }
}

use it as :

var name = p.Item(x=>x.Fills);

For detail about how method works see Expression Tree in .Net

Check this blogpost which is helpful : http://handcraftsman.wordpress.com/2008/11/11/how-to-get-c-property-names-without-magic-strings/

Do this you need to make USe of reflection feature of .net framework.

Something like this

Type type = test.GetType();

PropertyInfo[] propInfos = type.GetProperties();
for (int i = 0; i < propInfos.Length; i++) 
{
    PropertyInfo pi = (PropertyInfo)propInfos.GetValue(i);
    string propName = pi.Name;
}

You can get you like as this ? ↓

public class Prescription
{
    public PDInt Fills;
}

public class PDInt 
{
    public int Value;
}




Prescription p = new Prescription();
foreach(var x in p.GetType().GetFields())
{
    // var type = x.GetType();  // PDInt　or X //Fills
}