TREEVIEW拖拽对应修改目录

附件:http://files.cnblogs.com/xe2011/TreeView_Drag_Directory%E6%93%8D%E4%BD%9C.rar

 

 

TREEVIEW拖拽对应修改目录

 

 

 

using System.IO;

 

 

        private static string RootPath = @"D:\Administrator\Documents\TestData";

        //返回 D:\Administrator\Documents

        private string myPath = GetDirectoryParentPath(RootPath); 

        private void Form1_Load(object sender, EventArgs e)

        {

            treeView1.AllowDrop = true;

            treeView1.HideSelection = false;

            DirectoryToTreeNode(RootPath,treeView1);

}

 

 

//添加目录到TREEVIEW

       private void DirectoryToTreeNode(string RootDir, TreeView treeView)

        {

            treeView.Nodes.Clear();

            DirectoryInfo di = new DirectoryInfo(RootDir);

            TreeNode rootNode = new TreeNode(di.Name);

            GetDirs(di.GetDirectories(), rootNode);

            treeView.Nodes.Add(rootNode);

            rootNode.Expand();

}

 

       private void GetDirs(DirectoryInfo[] subDirs, TreeNode treeNode)

        {

            foreach (DirectoryInfo d in subDirs)

            {

                TreeNode node = new TreeNode(d.Name, 0, 0);

                DirectoryInfo[] subSubDirs = d.GetDirectories();

                GetDirs(subSubDirs, node);

                treeNode.Nodes.Add(node);

            }

}

 

 

 

   /*问题

            C:\Program Files\\\

            C:\Program Files///

         */

        private bool DirectoryExists(string path)

        {

            DirectoryInfo d = new DirectoryInfo(path);

            return d.Exists;

}

 

       //目录 D:\Administrator\Documents\TestData

        //返回 D:\Administrator\Documents

        private static string GetDirectoryParentPath(string path)

        {

            DirectoryInfo d = new DirectoryInfo(path);

            return d.Parent.FullName;

}

 

        //目录 D:\Administrator\Documents\TestData

        //返回 TestData

        private string ExtractDirectoryName(string path)

        {

            DirectoryInfo d = new DirectoryInfo(path);

            return d.Name;

}

 

//移动文件夹

     //C:\Windows\a

    //C:\Windows\b

    //实际运行过程 Directory.Move( "C:\Windows\a" , "C:\Windows\b\a");

    private bool MoveDirectory(string sourceDirName, string destDirName)

    {

        destDirName = String.Format("{0}\\{1}", destDirName, ExtractDirectoryName(sourceDirName));

        //源目录存在 但目标目录不存在

        if (DirectoryExists(sourceDirName) && !DirectoryExists(destDirName)) 

        {

            Directory.Move(sourceDirName, destDirName);

            //源目录不存在 但目标目录存在

            if (!DirectoryExists(sourceDirName) && DirectoryExists(destDirName)) 

                return true;

        }

        else

            return false;

        return false;

}

 

 

 

 TreeView拖拽操作

       private void treeView1_DragOver(object sender, DragEventArgs e)

        {

            TreeNode node2 = treeView1.GetNodeAt(treeView1.PointToClient(new Point(e.X, e.Y)));

            //节点2不存在

            //节点1 = 节点2

            //节点1 往它的父一级节点拖拽

            if ((node2 == null) ||(node1 == node2)|| (node1.Parent == node2))

            {

                treeView1.SelectedNode = node1;

                SetTreeNodeColorDefault();

                e.Effect = DragDropEffects.None;

                return;

            }

            else

            {

                e.Effect = DragDropEffects.Move;

                treeView1.SelectedNode = node2;

                SetTreeNodeColorBlue();

 

                //当一个父节点往它的子节点中拖拽时

                while (node2.Parent != null)

                {

                    if (node2.Parent == node1)

                    {

                        e.Effect = DragDropEffects.None;

                        return;

                    }

                    node2 = node2.Parent;

                }

            }

}

 

        private void treeView1_DragDrop(object sender, DragEventArgs e)

        {

            //拖拽的节点指向目标的 这个目标节点

            TreeNode node2 = treeView1.GetNodeAt( treeView1.PointToClient(new Point(e.X, e.Y)) );

            if (node1 != node2)

            {

                if (node1.Parent != node2)

                {

                    string dir1 = myPath + "\\" + node1.FullPath;

                    string dir2 = myPath + "\\" + node2.FullPath;

 

                    textBox1.Text = dir1;

                    textBox2.Text = dir2;

                  

                    if (MoveDirectory(textBox1.Text, textBox2.Text))

                    {

                    //MessageBox.Show("Finished");

 

                        // Remove drag node from parent

                        if (node1.Parent == null)

                            treeView1.Nodes.Remove(node1);

                        else

                            node1.Parent.Nodes.Remove(node1);

                        node2.Nodes.Add(node1);

                        treeView1.SelectedNode = node1;

                        node2.Expand();

                    }

                    

                }

            }

}

 

 设置节点颜色

        private void treeView1_MouseDown(object sender, MouseEventArgs e)

        {

 

            SetTreeNodeColorDefault();

}

 

        private void SetTreeNodeColorBlue()

        {

            if (node1 != null)

            {

                node1.BackColor = Color.FromArgb(51, 153, 255);//蓝色 

                node1.ForeColor = Color.White;

            }

        }

 

        private void SetTreeNodeColorDefault()

        {

            if (node1 != null)

            {

                node1.BackColor = SystemColors.Window;

                node1.ForeColor = Color.Black;

            }

}

 

来自为知笔记(Wiz)

附件列表