Winform TreeView的用法

   C# 中 TreeView綁定資料庫資料，目前這個這個只是一個demo,在項目中運用有些欠缺，以後會進行完善...

 

  DataSet ds = sysDicTypeBll.GetAllList();<br /> //把其他節點加上去<br /> if (ds != null)<br /> {<br /> //往TreeView中添加樹節點<br /> //添加根節點<br /> TreeNode tn = new TreeNode();<br /> tn.Text = "所有資料字典類型";<br /> tn.Name = "0";<br /> tv.Nodes.Add(tn);<br /> tv.SelectedNode = tv.TopNode;<br /> //把其他節點加上去<br /> if (ds != null)<br /> {<br /> foreach (DataRow dr in ds.Tables[0].Rows)<br /> {<br /> tn = new TreeNode();<br /> tn.Text = dr["DicTypeName"].ToString();<br /> tn.Name = dr["DicTypeId"].ToString();<br /> tv.SelectedNode.Nodes.Add(tn);<br /> }<br /> tv.ExpandAll();//展開TreeView<br /> tv.SelectedNode = tv.TopNode; //最頂端節點選中<br /> }<br /> }

 

C# 中 TreeView  常用的一些方法，屬於個人收集及總結

using System;<br />using System.Collections.Generic;<br />using System.Linq;<br />using System.Text;<br />using System.Windows.Forms;</p><p>namespace ShangwuFrame.CommonUI<br />{<br /> public class TreeUtil<br /> {<br /> /// <summary><br /> /// 從資料庫查詢添加新的樹節點到指定的父接點上<br /> /// </summary><br /> /// <param name="parenTn">父接點</param><br /> /// <param name="newTn">新節點</param><br /> /// <param name="nodeText">新節點顯示文本</param><br /> /// <param name="nodeName">新接點唯一值，資料表中的ID</param><br /> public static void AddTreeNode(TreeNode parenTn, TreeNode newTn, string nodeText, string nodeName)<br /> {<br /> newTn = new TreeNode(nodeText);<br /> newTn.Name = nodeName;<br /> parenTn.Nodes.Add(newTn);<br /> }</p><p> /// <summary><br /> /// 添加資料到資料庫的同時把資料添加到指定的樹節點<br /> /// </summary><br /> /// <param name="treeview">treeview組件</param><br /> /// <param name="parenTn">父節點</param><br /> /// <param name="newTn">新節點</param><br /> /// <param name="nodeText">新節點顯示文本</param><br /> /// <param name="id">新接點唯一值，資料表中的ID</param><br /> /// <param name="selectName">所選資料的ID，用於查詢指定的樹節點</param><br /> public static void InsertTreeNode(TreeView treeview, TreeNode parenTn, TreeNode newTn, string nodeText, int id, string selectName)<br /> {<br /> int ok = 0; //0代表還沒找到節點，1為找到節點<br /> TreeNode selectedNode;<br /> newTn = new TreeNode(nodeText);<br /> newTn.Name = id.ToString();<br /> if (selectName != "")<br /> {<br /> for (int i = 0; i < treeview.Nodes.Count; i++)<br /> {<br /> parenTn = treeview.Nodes[i];<br /> for (int j = 0; j < parenTn.Nodes.Count; j++)<br /> {<br /> if (parenTn.Nodes[j].Name == selectName)<br /> {<br /> selectedNode = parenTn.Nodes[j];<br /> selectedNode.Nodes.Add(newTn);<br /> ok = 1;<br /> break;<br /> }<br /> }<br /> if (ok == 1)<br /> {<br /> break;<br /> }<br /> }<br /> }<br /> else<br /> {<br /> treeview.Nodes.Add(newTn);<br /> }<br /> }</p><p> public static void InsertTreeNode(TreeView treeview, TreeNode parenTn, string nodeText, int id, string selectName)<br /> {<br /> int ok = 0; //0代表還沒找到節點，1為找到節點<br /> TreeNode selectedNode;<br /> parenTn = new TreeNode(nodeText);<br /> parenTn.Name = id.ToString();<br /> if (selectName != "")<br /> {<br /> for (int j = 0; j < treeview.Nodes.Count; j++)<br /> {<br /> if (treeview.Nodes[j].Name == selectName)<br /> {<br /> selectedNode = treeview.Nodes[j];<br /> selectedNode.Nodes.Add(parenTn);<br /> ok = 1;<br /> break;<br /> }<br /> }<br /> }<br /> }</p><p> /// <summary><br /> /// 添加資料到資料庫的同時把資料添加到指定的樹節點<br /> /// </summary><br /> /// <param name="parenTn">父節點</param><br /> /// <param name="newTn">新節點</param><br /> /// <param name="nodeText">新節點顯示文本</param><br /> /// <param name="id">新接點唯一值，資料表中的ID</param><br /> /// <param name="selectName">所選資料的ID，用於查詢指定的樹節點</param><br /> public static void DirectInsertTreeNode(TreeNode parenTn, TreeNode newTn, string nodeText, int id)<br /> {<br /> newTn = new TreeNode(nodeText);<br /> newTn.Name = id.ToString();<br /> parenTn.Nodes.Add(newTn);<br /> }<br /> }<br />}<br />