是否有可能从PropertyInfo获得“对象”？

Question

In my precent questions, I want to retrieve some values via reflection. Now I want set values to objects thanks to reflection.

I want to write this :

private void AppliquerColonnesPersonnalisation(Control control, Propriete propriete, PropertyInfo Info)
        {
            UltraGrid grille = (UltraGrid)control;
            SortedList<int,string> sortedOrderedColumns = new SortedList<int,string>();

            if (grille != null)
            {
                // I want to write MapPropertyInfo method 
                ColumnsCollection cols = MapPropertyInfo(Info);

PropertyInfo contains a type of ColumnsCollection. I just want to "map" my PropertyInfo to an object to define some properties after : For example :

cols[prop.Nom].Hidden = false;

Is it possible ?

Best Regards,

Florian

EDIT : I tried the GenericTypeTea solution, but I have some problem. Here my code snippet :

        private void AppliquerColonnesPersonnalisation(Control control, Propriete propriete, PropertyInfo Info)
    {
        UltraGrid grille = (UltraGrid)control;
        ColumnsCollection c = grille.DisplayLayout.Bands[0].Columns;

                    // Throw a not match System.Reflection.TargetException
        ColumnsCollection test = Info.GetValue(c,null) as ColumnsCollection;
        SortedList<int,string> sortedOrderedColumns = new SortedList<int,string>();

But a TargetException is Thrown

Answer 1

So you already have a PropertyInfo object that is of type ColumnsCollection ?

You can get it and modify it using the following code:

var original = GetYourObject();
PropertyInfo Info = GetYourPropertyInfo(original);
ColumnsCollection collection = Info.GetValue(original) as ColumnsCollection;

Basically, you just need to pass your original object back into the PropertyInfo 's GetValue method which will return you an object. Just cast that as the ColumnsCollection and you should be sorted.

UPDATE:

Based on your update, you should be doing this:

object original = grille.DisplayLayout.Bands[0];
PropertyInfo info = original.GetProperty("Columns");

ColumnsCollection test = info.GetValue(original, null) as ColumnsCollection;

You must be getting your Info PropertyInfo from an object of a different type. Although I think we're fixing the wrong problem here. I don't understand what you're trying to achieve. Why not just modify grille.DisplayLayout.Bands[0].Columns directly?