Complex DataBinding

[Sazlo]

Say i am binding to an ArrayList. The ArrayList contains a group of ObjectA's defined, loosely, as the following:

 

public class ObjectA
{
   private ObjectB  objB;

   public ObjectB ContainedObject
   {
         get{return objB;}
   }
}

 

Is it possible to bind to a property of Object B? Ive tried using a binding string of "ContainedObject.SomeProperty" but obviously that doesnt work.

 

Any thoughts?

Saz

[Cags]

If you wish to return a property of a child object you can do something like the following, basically you just make a property of the type of the childs property...

 

public class ObjectA
{
public string Name
{
	get { return "Object A"; }
}
}

public class ObjectB
{
private ObjectA objA = new ObjectA();

public string ObjAName
{
	get { return objA.Name; }
}
}

 

Does this answer your question?

[Sazlo]

Aye, thats what I've been doing as a work around. However, Id rather not take that approach if its possible. I find it a tad clunky since those exposed properties contain data that doesnt really apply to the object exposing them.

 

Ive thought along the lines of creating a "helperobject" to contain the necessary information for binding(including child object data) and have the parent create it when needed. I could achieve the same effect and keep the information logically seperated for processing. The helperobject would be a read only snapshot and strictly used for databinding. Perhaps thats a good way to go.

 

Any more input is greatly appreciated.

 

Thanks,

Saz

[barski]

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnforms/html/winforms02182005.asp