Csharp: Treeview check list value

  1  /// <summary>
  2         /// 選擇的節點
  3         /// 塗聚文 20121116
  4         /// 捷為工作室
  5         /// 
  6         /// </summary>
  7         /// <param name="sender"></param>
  8         /// <param name="e"></param>
  9         private void treeView1_AfterCheck(object sender, TreeViewEventArgs e)
 10         {
 11  #region  4
 12 
 13             if (e.Action != TreeViewAction.Unknown)
 14             {
 15 
 16                 //Event call by mouse or key-press
 17 
 18                 SetNodeCheckStatus(e.Node, e.Node.Checked);
 19 
 20             }
 21             #endregion 
 22 
 23 
 24         }
 25         /// <summary>
 26         /// 選擇的節點
 27         /// </summary>
 28         /// <param name="tn"></param>
 29         /// <param name="Checked"></param>
 30         private void SetNodeCheckStatus(TreeNode tn, bool Checked)
 31         {
 32 
 33             if (tn == null) return;
 34 
 35             // Check children nodes
 36 
 37             foreach (TreeNode tnChild in tn.Nodes)
 38             {
 39 
 40                 tnChild.Checked = Checked;
 41 
 42                 SetNodeCheckStatus(tnChild, Checked);
 43 
 44             }
 45 
 46             // Set parent check status
 47 
 48             TreeNode tnParent = tn;
 49 
 50             int nNodeCount = 0;
 51 
 52             while (tnParent.Parent != null)
 53             {
 54 
 55                 tnParent = (TreeNode)(tnParent.Parent);
 56 
 57                 nNodeCount = 0;
 58 
 59                 foreach (TreeNode tnTemp in tnParent.Nodes)
 60 
 61                     if (tnTemp.Checked == Checked)
 62 
 63                         nNodeCount++;
 64 
 65                 if (nNodeCount == tnParent.Nodes.Count)
 66 
 67                     tnParent.Checked = Checked;
 68 
 69                 else
 70 
 71                     tnParent.Checked = false;
 72 
 73             }
 74 
 75         }
 76 
 77 
 78         #region  選擇的節點
 79         /// <summary>
 80         /// http://www.codeproject.com/Questions/196856/C-NET-Treeview-Node-Checked
 81         /// http://msdn.microsoft.com/en-us/library/system.windows.forms.treeview.aftercheck.aspx
 82         /// </summary>
 83         /// <param name="treeNode"></param>
 84         /// <param name="nodeChecked"></param>
 85         public void CheckAllChildNodes(TreeNode treeNode, bool nodeChecked)
 86         {
 87             foreach (TreeNode node in treeNode.Nodes)
 88             {
 89                 node.Checked = nodeChecked;
 90                 if (node.Nodes.Count > 0)
 91                 {
 92                     this.CheckAllChildNodes(node, nodeChecked);
 93                 }
 94             }
 95         }
 96         #endregion
 97         /// <summary>
 98         /// 顯示選擇的節點
 99         /// </summary>
100         /// <param name="sender"></param>
101         /// <param name="e"></param>
102         private void button1_Click(object sender, EventArgs e)
103         {
104 
105             DataTable dt = new DataTable();
106             dt.Columns.Add("Uid", typeof(Guid));
107             dt.Columns.Add("ID", typeof(int));
108             dt.Columns.Add("Name", typeof(string));
109             dt.Columns.Add("ParentID", typeof(int));
110 
111             List<TreeNode> selectedNodes = new List<TreeNode>();
112             GetSelectedTreeNode(treeView1.Nodes, selectedNodes);
113             int i = 0;
114             foreach (TreeNode node in selectedNodes)
115             {
116                  if (!string.IsNullOrEmpty(node.ToolTipText))
117                 {
118                     dt.Rows.Add(new Guid(node.ToolTipText), node.Name, node.Text,node.Parent.Name);
119                 }
120                 i++;
121             }
122 
123 
124             dataGridView1.DataSource = dt;
125             
126             
127 
128            
129            
130         }
131         /// <summary>
132         /// 選擇的節點的值
133         /// </summary>
134         /// <param name="nodes"></param>
135         /// <param name="selectedNodes"></param>
136         void GetSelectedTreeNode(TreeNodeCollection nodes, List<TreeNode> selectedNodes)
137         {
138             foreach (TreeNode node in nodes)
139             {
140                 if (node.Checked)
141                 {
142                     selectedNodes.Add(node);
143                 }
144                 GetSelectedTreeNode(node.Nodes, selectedNodes);
145             }
146         }
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