Property set method not found in a derived type
.net-3.5, c#, propertyinfo
Solution
I had a similar problem where my private property was declared in a base class. I used DeclaringType to get a handle on the class where the property is defined.
using System;
class Test
{
public DateTime ModifiedOn { get; private set;}
}
class Derived : Test
{
}
static class Program
{
static void Main()
{
Derived p = new Derived ();
PropertyInfo property = p.GetType().GetProperty("ModifiedOn");
PropertyInfo goodProperty = property.DeclaringType.GetProperty("ModifiedOn");
goodProperty.SetValue(p, DateTime.Today, null);
Console.WriteLine(p.ModifiedOn);
}
}
Problem
As disgussed in .NET Reflection set private property one can set a property with a private setter. But when the property is defined in a base class, System.ArgumentException is thrown : "Property set method not found". An example can be: ``` using System; class Test { public DateTime ModifiedOn { get; private set;} } class Derived : Test { } static class Program { static void Main() { Derived p = new Derived (); typeof(Derived).GetProperty("ModifiedOn").SetValue( p, DateTime.Today, null); Console.WriteLine(p.ModifiedOn); } } ``` Does anyone know a way to tackle this situation? Edit: The example given is a simple illustration of the problem. In the real world scenario, I do not know if the property is defined in a base class, or defined in the base of the base class.