TreeView and TreeNode problem

[pei_world]

I wrote a class inherit from TreeNode of the system as follow, but when I
try to use it with TreeView object, then it doesn't work, can anyone help?

//============== code to use the inherited node
ServiceServer.InheritTreeNode rootNode = null;
rootNode = treeServices.Nodes.Add(System.Net.Dns.GetHostName());
//*** Error: Cannot implicitly convert type 'System.Windows.Forms.TreeNode'
to 'ServiceServer.InheritTreeNode'



//============== inherit class
public class InheritTreeNode:TreeNode
{
public enum NodeType
{
root,
subroot,
content
}
private NodeType nodetype;
......
......

 

[Rick Strahl [MVP]]

You need to cast the tree node:

rootNode = (InheritTreeNode)
treeServices.Nodes.Add(System.Net.Dns.GetHostName());

But that still won't do what you think it should because the node added is
actually created by the Add method. In other words just casting it isn't
going to give you magically an inherited node since the method didn't create
that.

+++ Rick ---

Rick Strahl
West Wind Technologies
http://www.west-wind.com/
http://www.west-wind.com/wwHelp

 

[Jan Tielens]

To accomplish that, you also should create your own TreeView, by inheriting
from the default TreeView, so you'd have control over the Add method etc.