Hmm, i dont fully understand it.

i have a public class (MyClass)

in that class i have set some public properties

public Image DataType {get;set;}

public string Name {get;set;}

public int ID {get;set;}

I have a list with the type of this class and this list is bound to my datasource. So the columns that it will show are these 3 properties shown above. Everything is being shown fine, but the Image property isnt.

Suppose that i have another class MyClass2, this class also contains a property Datatype of type image, i want a different image for items of this class. btw MyClass contains a also a list of type MyClass2, so this can be seen as a childrenslist.

Isnt it possible that that ultratree uses the imagevalue that i have set for each class in the column DataType?

i don't know - i've never used it with a connected DataSet. I fill the nodes/cells "by hand" in a "foreach"-loop for example. This way i have more control about what happens, what value is put into the cell and how it is filled.

I cannot see a DataType "Image" for a cell so i would doubt that it will work like you hope.

I think it should be possible for you to get an event or callback or something whenever a new node is added or whenever a special cell is about to be filled with data. Once you know how to get this event, you may handle just the filling for that image-cell by hand to set the Cell-Image like i wrote you (of course not out of an ImageList but out of your own class).

To get the events, maybe a creationFilter could work. I'm not an infragisticGuru here but look at this (i needed an event to know when a node is getting visible because i have to load an image. I only like to load images for nodes that are visible and not for 10.000 nodes that are in that treeView. So i did this). Debug the "if (parent is ..." part to see which types are possible. Somhow a "cell" or something should appear:

Somewhere set the Filter like:

tree.CreationFilter = new TreeOwnerDraw();

public class TreeOwnerDraw : Infragistics.Win.IUIElementCreationFilter
    {

        public void AfterCreateChildElements(Infragistics.Win.UIElement parent)
        {
            //Nothing in here.           
        }
        public bool BeforeCreateChildElements(Infragistics.Win.UIElement parent)
        {
            //Declare some variables

            TreeNodeUIElement nodeUIElement;

           
            if (parent is TreeNodeUIElement)
            {
                nodeUIElement = (TreeNodeUIElement)parent;
                UltraTreeNode node = nodeUIElement.Node;

                if ((node != null) && (node.Tag != null))
                {
                    //do something with the node that is about to be created
                }
               
            }

            //Return false to let the grid know we did not handle the event.
            return false;
        }

    }

This is even a better solution then i already had. I've got it to work with the columnset[column].EditorComponent property. I created an picturebox and set it to the editorcomponent of the datatype column. But your solution doesnt even require that. So thank you, it works:)

There's a much easier way.

Assuming you are not creating the ColumnSets yourself and are just letting the tree generate them from the data, what you do is this:

        private void ultraTree1_ColumnSetGenerated(object sender, Infragistics.Win.UltraWinTree.ColumnSetGeneratedEventArgs e)
        {
            if (e.ColumnSet.Key == "key of the band that has the image column")
                e.ColumnSet.Columns["my Image Column"].Editor = new EmbeddableImageRenderer();
        }

Maybe thats the best solution, just add the nodes by hand. I will give it a try and let you know.

Maybe there are some other people that know how to deal with binding a list to the datasource that contains an image.