Wed 29 Dec 2004 12:34:28 PM UTC, original submission:
class System.Windows.Forms.TreeNodeCollection;
within pnetlib 0.6.8
Reproduction program source:
//------------- Form1.cs
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
namespace WindowsApplication1
{
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.TreeView treeView1;
private System.ComponentModel.Container components = null;
public Form1()
{
InitializeComponent();
}
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
private void InitializeComponent()
{
this.treeView1 = new System.Windows.Forms.TreeView();
this.SuspendLayout();
//
// treeView1
//
this.treeView1.ImageIndex = -1;
this.treeView1.Location = new System.Drawing.Point(8, 8);
this.treeView1.Name = "treeView1";
this.treeView1.Nodes.AddRange(
new System.Windows.Forms.TreeNode[] {
new System.Windows.Forms.TreeNode("top 1",
new System.Windows.Forms.TreeNode[]{new System.Windows.Forms.TreeNode("Node 1")}),
new System.Windows.Forms.TreeNode("top 2")});
this.treeView1.SelectedImageIndex = -1;
this.treeView1.Size = new System.Drawing.Size(272, 208);
this.treeView1.TabIndex = 6;
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
this.ClientSize = new System.Drawing.Size(292, 269);
this.Controls.Add(this.treeView1);
this.Name = "Form1";
this.Text = "Form1";
this.ResumeLayout(false);
}
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
}
}
------------------------------------
When toggle node "top1", you would get exception about null reference.
Solution,(sorry i don't know how to do patch now)
replace void TreeNodeCollection.Add (TreeNodeCollection.cs:108)
by
public virtual int Add(TreeNode node)
{
if (node.treeView != null && node.treeView.Sorted)
{
return owner.AddSorted(node);
}
else
{
owner.SizeChildrenArray();
set_node_owner(node);
node.parent = owner;
int pos = owner.childCount++;
node.index = pos;
owner.children[node.index] = node;
// Redraw if required.
if (node.treeView != null && node.treeView.IsHandleCreated)
{
node.treeView.Draw(owner);
}
return pos;
}
}
private void set_node_owner(TreeNode node)
{
node.treeView = owner.TreeView;
foreach(TreeNode cn in node.Nodes)
set_node_owner(cn);
}
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