. NET Common Tricks _ Tree Control tool classes

usingSystem;usingSystem.Collections.Generic;usingSystem.Text;usingSystem.Collections;usingDevcomponents.advtree;namespacemyutility {/// <summary>    ///Tree Control Tool class/// </summary>     Public classTreetool {ArrayList Selectarray=NewArrayList (); List<Node> list =NewList<node>(); /// <summary>        ///Select the parent node, and all of its child nodes are also selected/// </summary>        /// <param name= "parentnode" ></param>         PublicArrayList setchildchecked (Node parentnode,arraylist list) { for(inti =0; i<parentnode.nodes.count;i++) {node node=Parentnode.nodes[i]; Node. Checked=true; //list. ADD (node);                if(node. HasChildNodes) {List=setchildchecked (node, list); } Else{list.                ADD (node); }            }            returnlist; }        /// <summary>        ///Select a neutron node whose parent node is also selected/// </summary>        /// <param name= "Childnode" ></param>         Public voidsetparentchecked (Node childnode) {if(Childnode.parent! =NULL) {childNode.Parent.Checked=true;            Setparentchecked (childnode.parent); }        }        /// <summary>        ///cancels a child node and its parent node is also canceled/// </summary>        /// <param name= "Childnode" ></param>         Public voidsetparentunchecked (Node childnode) {if(Childnode.parent! =NULL) {childNode.Parent.Checked=false;            Setparentunchecked (childnode.parent); }        }        /// <summary>        ///cancels the parent node, and all its child nodes are also canceled/// </summary>        /// <param name= "parentnode" ></param>         PublicArrayList cancelchildchecked (Node parentnode, ArrayList list) { for(intI=0; i<parentnode.nodes.count;i++) {node node=Parentnode.nodes[i]; Node. Checked=false; List.                Remove (node); if(node. HasChildNodes) {List=cancelchildchecked (node, list); }            }            returnlist; }        /// <summary>        ///find nodes by name Blur/// </summary>        /// <param name= "Node" >root node</param>        /// <param name= "text" >name</param>        /// /// <param name= "text" >Lookup type, 0 for finding parent node, 1 for finding child nodes</param>        /// <returns></returns>         PublicList<node> Searchnode (node node, String text,intflag) {                        if(Flag = =0&&node. Text.contains (text)) {list.            ADD (node); } Else if(!node. HasChildNodes &&node. Text.contains (text)) {list.            ADD (node); }                        if(node. HasChildNodes) { for(inti =0; I < node. Nodes.count; i++) {List=Searchnode (node.                Nodes[i], Text,flag); }            }            returnlist; }        /// <summary>        ///find nodes exactly by value/// </summary>        /// <param name= "Node" ></param>        /// <param name= "text" ></param>        /// <returns></returns>         PublicList<node>Searchnode_value (node node, String value) {if(node. Tag.tostring (). Equals (value) &&!node. HasChildNodes) {list.            ADD (node); } Else if(node. HasChildNodes) { for(inti =0; I < node. Nodes.count; i++) {List=Searchnode_value (node.                Nodes[i], value); }            }            returnlist; }        /// <summary>        ///traversing selected nodes/// </summary>        /// <param name= "Node" ></param>        /// <param name= "perlist" ></param>        /// <returns></returns>         PublicArrayList Visitselectnode (node node) {if(!node. HasChildNodes) {if(node. Checked = =true) {Selectarray.add (node); } Else{//Cancel Parent Nodesetparentunchecked (node); }            } Else{node. Checked=true;  for(inti =0; I < node. Nodes.count; i++) {Selectarray=Visitselectnode (node.                                   Nodes[i]); }            }            returnSelectarray; }        /// <summary>        ///traverse the node, and select/// </summary>        /// <param name= "Node" ></param>        /// <param name= "perlist" ></param>        /// <returns></returns>         Public voidVisitnode (node node, ArrayList list) {if(!node. HasChildNodes) {if(list. Count! =0) {                    foreach(String IDinchlist) {                        if(node. Checked = =true) {node. Checked=false; }                        if(node. Tag.tostring (). Equals (ID)) {node. Checked=true;  Break; }                    }                } Else{node. Checked=false; }            } Else {                 for(inti =0; I < node. Nodes.count; i++) {Visitnode (node.                Nodes[i], list); }            }        }            }}