Does Array class implement IList interface?

[polocar]

Hi all,
I'm writing a C# program (with Visual Studio .NET 2003 Professional), and I created an array of TreeNode objects using the simple statement:

TreeNode[] atn;

Then I created a TreeNode object with the statement

TreeNode tn = new TreeNode("test");

and I tried to add it to the array, but I discovered that there isn't a method Add: in fact, the statement

atn.Add(tn);

generates a compile error.

The strange thing is that, when I consulted the IList interface in the MSDN library (the interface that implements Add, Insert, Remove, RemoveAt and other methods), I read that it can be used from the Array class...

So, why the compiler gives me an error if I try to use the Add method to add an element to an array?
If this way isn't possible, how can I increase the dimension of a dynamic array and add an element to it?

Thank you very much

 

[polocar]

P.S.: I have seen that the ArrayList class implements all the IList methods, but I need to use a simple Array because then I must add it to a TreeView object using the AddRange method of the TreeNodeCollection class (and it requires a TreeNode[] class...)

tv.Nodes.AddRange(atn);

 

[JohnYingling]

Use ArrayList then copy to Array
ArrayList al = new ArrayList(50);
TreeNode[] atn;
al.Add(xxxx);
.......

' something like
TreeNode[] wa = new TreeNode[al.Count - 1];
al.CopyTo(wa)
atn = wa;

http://www.VBCompare.com

Compare Code

 

[polocar]

Good, thank you John

 

[JohnYingling]

Correction
TreeNode[] wa = new TreeNode[al.Count - 1];

SHOULD BE

TreeNode[] wa = new TreeNode[al.Count];

I was thinking in VB.

http://www.VBCompare.com

Compare Code

 

[chiph]

If Microsoft had been thinking ahead on this, they would have added an overload to AddRange that accepted a TreeNodeCollection.

Chip H.


____________________________________________________________________
Click here to learn Ways to help with Tsunami Relief
If you want to get the best response to a question, please read FAQ222-2244 first