示例#1
0
        /// <summary>
        /// 节点选中后的事件
        /// </summary>
        /// User:Ryan  CreateTime:2012-9-28 15:42.
        void PopDownTree_AfterCheck(object sender, TreeViewEventArgs e)
        {
            TreeNodeEx node = e.Node as TreeNodeEx;

            if (node != null)
            {
                if (node is DefaultTreeNode)
                {
                    return;
                }
                else
                {
                    //add
                    if (node.Checked)
                    {
                        this._CheckedNodes.Add(node);
                    }
                    //remove
                    else
                    {
                        this._CheckedNodes.Remove(node);
                    }

                    //update text
                    this.UpdateText(node);
                }
            }
        }
示例#2
0
        /// <summary>
        /// 绑定一级节点
        /// </summary>
        /// <param name="item">The item.</param>
        /// User:Ryan  CreateTime:2012-9-27 17:39.
        protected virtual void BindRootNode(object item)
        {
            TreeNodeEx node = this.GetRootNode(item);

            this.PopDownTree.Nodes.Add(node);
            //绑定子节点
            this.BindChildNode(item, node);
        }
示例#3
0
        /// <summary>
        /// 获取指定接的的全部值
        /// </summary>
        /// User:Ryan  CreateTime:2012-9-27 19:25.
        private List <string> GetFullPathValues(TreeNodeEx node)
        {
            List <string> list = new List <string>();

            list.Add(node.Value);
            if (node.Parent != null)
            {
                list.AddRange(this.GetFullPathValues(node.Parent as TreeNodeEx));
            }

            return(list);
        }
示例#4
0
 /// <summary>
 /// 绑定子节点(自反射数据源)
 /// </summary>
 /// <param name="item">The item.</param>
 /// <param name="node">The node.</param>
 /// User:Ryan  CreateTime:2012-9-27 17:39.
 protected virtual void BindChildNode(object item, TreeNodeEx node)
 {
     //绑定多级节点
     if (!string.IsNullOrEmpty(this.MultiLevelDataSourceMember))
     {
         object dataSource = item.TryGetValue(this.MultiLevelDataSourceMember);
         if (dataSource != null)
         {
             this.BindChildNode(node, dataSource);
         }
     }
 }
示例#5
0
 /// <summary>
 /// 设置当即选中树节点
 /// </summary>
 /// <param name="node">The node.</param>
 /// User:Ryan  CreateTime:2012-9-27 20:14.
 private void SetSelectedNode(TreeNodeEx node)
 {
     this.UpdateText(node);
     if (node is DefaultTreeNode)
     {
         this.SelectedNode = null;
     }
     else
     {
         this.SelectedNode = node;
         if (this.OnTreeNodeSelected != null)
         {
             TreeNodeEventArgs args = new TreeNodeEventArgs();
             args.SelectedNode = this.SelectedNode;
             this.OnTreeNodeSelected(this.PopDownTree, args);
         }
     }
 }
示例#6
0
        /// <summary>
        /// 树节点展开处理事件
        /// </summary>
        /// <param name="sender">(控件对象).The source of the event.</param>
        /// <param name="e">(事件数据).The <see cref="System.Windows.Forms.TreeViewCancelEventArgs"/> instance containing the event data.</param>
        /// User:Ryan  CreateTime:2012-9-27 18:50.
        void PopDownTree_BeforeExpand(object sender, TreeViewCancelEventArgs e)
        {
            TreeNodeEx node = e.Node as TreeNodeEx;

            if (!node.LeafNode && node.Datasource == null && node.Nodes[0] != null && node.Nodes[0] is EmptyTreeNode)
            {
                //clear data
                node.LeafNode = true;
                node.Nodes.Clear();
                //实现该事件以加载子节点数据
                if (this.LoadChildNodesDataSource != null)
                {
                    TreeNodeEventArgs args = new TreeNodeEventArgs();
                    args.SelectedNode = node;
                    this.LoadChildNodesDataSource(sender, args);
                    //bind data
                    this.BindChildNode(node, args.DataSource);
                }
            }
        }
示例#7
0
        private void SetCheckedNodeByValues(string[] values, TreeNodeEx node)
        {
            if (node == null)
            {
                return;
            }

            if (values.Contains(node.Value))
            {
                node.Checked = true;
            }
            else
            {
                if (node.Nodes != null && node.Nodes.Count > 0)
                {
                    foreach (TreeNodeEx item in node.Nodes)
                    {
                        this.SetCheckedNodeByValues(values, item);
                    }
                }
            }
        }
示例#8
0
        private List <TreeNodeEx> GetCheckedNodes(TreeNodeEx node)
        {
            if (node != null && this.PopDownTree.CheckBoxes)
            {
                List <TreeNodeEx> list = new List <TreeNodeEx>();
                if (node.Checked)
                {
                    list.Add(node);
                }

                if (node.Nodes != null && node.Nodes.Count > 0)
                {
                    list.AddRange(this.GetCheckedNodes(node));
                }

                return(list);
            }
            else
            {
                return(null);
            }
        }
示例#9
0
 /// <summary>
 /// BindChildNode 绑定子节点(指定数据源)
 /// </summary>
 /// <param name="node">The node.</param>
 /// <param name="dataSource">The data source.</param>
 /// User:Ryan  CreateTime:2012-9-27 17:40.
 protected virtual void BindChildNode(TreeNodeEx node, object dataSource)
 {
     //验证绑定树的深度:如果TreeMaxDegree为0标示无限级数,其它只绑定相应级数的数据
     if (node != null && dataSource != null && (this.TreeMaxDegree == 0 || node.Level < this.TreeMaxDegree - 1))
     {
         node.Datasource = dataSource;
         //get data source
         IEnumerable source = this.GetSource(dataSource);
         if (source == null)
         {
             throw new ArgumentException("数据源必须是支持枚举器的列表数据!");
         }
         //bind data
         node.Nodes.Clear();
         foreach (object item in source)
         {
             TreeNodeEx childNode = this.GetChildNode(node, item);
             node.Nodes.Add(childNode);
             this.BindChildNode(item, childNode);
         }
     }
 }
示例#10
0
        /// <summary>
        /// 更新文本框显示的文本
        /// </summary>
        /// <param name="node">The node.</param>
        /// User:Ryan  CreateTime:2012-9-27 21:58.
        private void UpdateText(TreeNodeEx node)
        {
            if (node == null)
            {
                return;
            }

            if (this.CheckBox)
            {
                this.Text = this.GetCheckedTexts();
            }
            else
            {
                if (this.ShowFullPathText)
                {
                    this.Text = node.FullPath;
                }
                else
                {
                    this.Text = node.Text;
                }
            }
        }
示例#11
0
        private void SetSelectedNodeByValue(string value, TreeNodeEx node)
        {
            if (node == null)
            {
                return;
            }

            if (node.Value.Equals(value))
            {
                //this.SelectedNode = node;
                this.SetSelectedNode(node);
                return;
            }
            else
            {
                if (node.Nodes != null && node.Nodes.Count > 0)
                {
                    foreach (TreeNodeEx item in node.Nodes)
                    {
                        this.SetSelectedNodeByValue(value, item);
                    }
                }
            }
        }
示例#12
0
 protected virtual TreeNodeEx GetChildNode(TreeNodeEx node, object item)
 {
     return(new TreeNodeEx(this, item, node.Level == this.TreeMaxDegree - 2 ? true : false));
 }