TreeView and TreeNode problem

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;
......
......

re: TreeView and TreeNode problem

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
----------------------------------
Making waves on the Web


"pei_world" <pei_world@hotmail.com> wrote in message
news:#nSGj$5uDHA.2520@TK2MSFTNGP10.phx.gbl...[color=blue]
> 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[/color]
'System.Windows.Forms.TreeNode'[color=blue]
> to 'ServiceServer.InheritTreeNode'
>
>
>
> //============== inherit class
> public class InheritTreeNode:TreeNode
> {
> public enum NodeType
> {
> root,
> subroot,
> content
> }
> private NodeType nodetype;
> .....
> .....
>
>[/color]

re: TreeView and TreeNode problem

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.


--
Greetz,
Jan
__________________________________
Read my weblog: http://weblogs.asp.net/jan
"Rick Strahl [MVP]" <rickstrahl@hotmail.com> schreef in bericht
news:uQGzfy6uDHA.1764@TK2MSFTNGP10.phx.gbl...[color=blue]
>
> 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[/color]
create[color=blue]
> that.
>
> +++ Rick ---
>
> Rick Strahl
> West Wind Technologies
> http://www.west-wind.com/
> http://www.west-wind.com/wwHelp
> ----------------------------------
> Making waves on the Web
>
>
> "pei_world" <pei_world@hotmail.com> wrote in message
> news:#nSGj$5uDHA.2520@TK2MSFTNGP10.phx.gbl...[color=green]
> > I wrote a class inherit from TreeNode of the system as follow, but when[/color][/color]
I[color=blue][color=green]
> > try to use it with TreeView object, then it doesn't work, can anyone[/color][/color]
help?[color=blue][color=green]
> >
> > //============== code to use the inherited node
> > ServiceServer.InheritTreeNode rootNode = null;
> > rootNode = treeServices.Nodes.Add(System.Net.Dns.GetHostName( ));
> > //*** Error: Cannot implicitly convert type[/color]
> 'System.Windows.Forms.TreeNode'[color=green]
> > to 'ServiceServer.InheritTreeNode'
> >
> >
> >
> > //============== inherit class
> > public class InheritTreeNode:TreeNode
> > {
> > public enum NodeType
> > {
> > root,
> > subroot,
> > content
> > }
> > private NodeType nodetype;
> > .....
> > .....
> >
> >[/color]
>
>[/color]