C#

using System;<br />
<br />
namespace TestCustomTypePropertySetValue<br />
{<br />
  public class CustomThing<br />
  {<br />
    public CustomThing(string input)<br />
    {<br />
      m_input = input;<br />
    }<br />
<br />
    public string Input<br />
    {<br />
      get { return m_input; }<br />
    }<br />
    private string m_input;<br />
<br />
    public override string ToString()<br />
    {<br />
      return this.Input;<br />
    }<br />
<br />
    public static implicit operator CustomThing(string input)<br />
    {<br />
      return new CustomThing(input);<br />
    }<br />
<br />
    public static implicit operator string(CustomThing thing)<br />
    {<br />
      return thing.ToString();<br />
    }<br />
  }<br />
<br />
  public class ClassWithThing<br />
  {<br />
    public CustomThing Thing<br />
    {<br />
      get { return m_thing; }<br />
      set { m_thing = value; }<br />
    }<br />
    private CustomThing m_thing = new CustomThing("default");<br />
  }<br />
<br />
  class Class1<br />
  {<br />
    [STAThread]<br />
    static void Main(string[] args)<br />
    {<br />
      // set a custom thing to a string - this works<br />
      CustomThing thing = "test custom thing input";<br />
      <br />
      // set a string to a custom thing - this works<br />
      string input = thing;<br />
<br />
      // a property of type CustomThing<br />
      ClassWithThing cwt = new ClassWithThing();<br />
      System.Reflection.PropertyInfo propInfo =<br />
        cwt.GetType().GetProperty("Thing");<br />
<br />
      // set the property to a string value - this fails<br />
      propInfo.SetValue(cwt, "test input", null);<br />
    }<br />
  }<br />
}