Accessing object properties from a treenode that's associated with it ?

Question

Hallo, I have read http://stackoverflow.com/questions/1880930/easy-object-binding-to-treeview-node, but still have unanswered question.

if an object is associated with treenode tag property, how to access that object members/properties from that treenode ?

node1 = new TreeNode();
node1.tag = object1;
//ex:if object1 has public property valueA
//How to access valueA  from node1 ??

Answer 1

Maybe you can cast it back to the object1 type...

var valueA = ((object1Type)node1.tag).valueA;

Answer 2

MyClass c = treeNode.Tag as MyClass; theValue = c.TheProperty;

If you don't know the type of the object in question, then you can use System.Reflection:

System.Reflection.PropertyInfo pi = treeNode.Tag.GetType().GetProperty("SomeName");
theValue = pi.GetValue(treeNode.Tag, null);

Finally, if you want to know the names of the properties, again System.Reflection to the rescue:

System.Reflection.PropertyInfo[] pis = treeNode.Tage.GetType().GetProperties();
foreach (var pi in pis) {
  theName = pi.Name;
}