Re: Passing property Accesor as Function`

Without reflection you can get as close as this:

delegate void SetHandler<T>(T value);
public void SetProperty<T>(object o, string property, T value)
{
  SetHandler<T> sh =
(SetHandler<T>)Delegate.CreateDelegate(typeof(SetHandler<T>), o,
"set_" + property);
  sh( value);
}

SetProperty<double>( person, "HourlyRate", 42);

But you would still not have compile time checks...

BTW
Is seams like you want databinding, no?

// Ryan

On Nov 19, 2007 7:21 AM, Brady Kelly <[email protected]> wrote:
> Warning:  This is a purely academic and speculative post.
>
>
>
> This has suddenly become a real 'would like to have' feature in the project
> I'm currently working on.  I know this isn't possible in standard C#, but
> I'm trying to find a hammer with the right weight and shape to beat this
> into some semblance of working.  What I would like to achieve is something
> like this, in the commented line:
>
>
>
>    public class PersonForm
>
>    {
>
>        System.Windows.Forms.TextBox textRate = new TextBox();
>
>        public void BuildPerson(Person person)
>
>        {
>
>            Person pers = new Person();
>
>            pers.HourlyRate = textRate.Text.Length == 0 ? (double?) null :
> double.Parse(textRate.Text);
>
>            // SetPropertyFromText(pers.HourlyRate, textRate.Text)
>
>        }
>
>    }
>
>
>
> My SetPropertyFromText should take the pers.HourlyRate as a delegate
> parameter, not as a double?, determine the correct type conversion based on
> the type of the pers.HourlyRate, and set the property to the converted
> object value.
>
>
>
> I can easily use a property name as my property parameter for
> SetPropertyFromText, but then I lose compile time checks.  Our generated
> DAL, nettiers, provides, for each entity, an Enum with all the column
> properties for each entity, and I think this is about as close as I've seen
> to what I want, but not quite there.
>
>
>
> Any ideas on the matter?
>
>
>
>
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