Set object property using reflection

Question

Is there a way in C# where I can use reflection to set an object property?

Ex:

MyObject obj = new MyObject();
obj.Name = \"Value\";

Answer 1

Or you could wrap Marc's one liner inside your own extension class:

public static class PropertyExtension{       

   public static void SetPropertyValue(this object obj, string propName, object value)
    {
        obj.GetType().GetProperty(propName).SetValue(obj, value, null);
    }
}

and call it like this:

myObject.SetPropertyValue("myProperty", "myValue");

For good measure, let's add a method to get a property value:

public static object GetPropertyValue(this object obj, string propName)
{
        return obj.GetType().GetProperty(propName).GetValue (obj, null);
}

Answer 2

You can also access fields using a simillar manner:

var obj=new MyObject();
FieldInfo fi = obj.GetType().
  GetField("Name", BindingFlags.NonPublic | BindingFlags.Instance);
fi.SetValue(obj,value)

With reflection everything can be an open book:) In my example we are binding to a private instance level field.

Answer 3

Reflection, basically, i.e.

myObject.GetType().GetProperty(property).SetValue(myObject, "Bob", null);

or there are libraries to help both in terms of convenience and performance; for example with FastMember:

var wrapped = ObjectAccessor.Create(obj); 
wrapped[property] = "Bob";

(which also has the advantage of not needing to know in advance whether it is a field vs a property)

Answer 4

Yes, using System.Reflection:

using System.Reflection;

...

    string prop = "name";
    PropertyInfo pi = myObject.GetType().GetProperty(prop);
    pi.SetValue(myObject, "Bob", null);