Bind Treeview from xml file at runtime in C#

The basic similarity in the XML file and treeview control is the representation of the data in a hierarchical format. So we can bind the treeview control from the XML file. In this article i will explain you how we can do it. Continue reading “Bind Treeview from xml file at runtime in C#”

How to show all drives and their folders in treeview control with checkboxes

In this article i will show how we can bind all logical drives of your computer with their sub directories using vb.net programming languages.
The following example requires a Treeview control named Treeview1. Continue reading “How to show all drives and their folders in treeview control with checkboxes”

Drag and drop a tree node from one node another node in c#

This article demonstrate how we can add drag and drop functionality in one Treeview or between two or more Treeview controls. The following example shows how we can how we can drag and drop one treenode to other node of the treeview control.

below example contains two treeview named treeView1 and treeView2. you need to set the AllowDrop property of both TreeView1 and TreeView2 to True in the Properties window. In this example we are using common drag and drop events.

      
  public Form1()
        {
            InitializeComponent();

            TreeNode ParentNode1;
            TreeNode ParentNode2;

            TreeNode ParentNode3;

            ParentNode1 = treeView1.Nodes.Add("Fruits");
            ParentNode1.Nodes.Add("Apple");
            ParentNode1.Nodes.Add("Banana");
            ParentNode1.Nodes.Add("Mango");
            ParentNode1.Nodes.Add("Graps");
            ParentNode1.Expand();

            ParentNode3 = treeView1.Nodes.Add("Colors");
            ParentNode3.Nodes.Add("Red");
            ParentNode3.Nodes.Add("Yellow");
            ParentNode3.Nodes.Add("Green");           
            ParentNode3.Expand();

            ParentNode2 = treeView2.Nodes.Add("Store");
            ParentNode2.Nodes.Add("Store1");
            ParentNode2.Nodes.Add("Store2");
            ParentNode2.Expand();

            this.treeView1.ItemDrag += new System.Windows.Forms.ItemDragEventHandler(this.treeView_ItemDrag);
           this.treeView2.ItemDrag += new System.Windows.Forms.ItemDragEventHandler(this.treeView_ItemDrag);
            this.treeView1.DragEnter += new System.Windows.Forms.DragEventHandler(this.treeView_DragEnter);
            this.treeView2.DragEnter += new System.Windows.Forms.DragEventHandler(this.treeView_DragEnter);
            this.treeView1.DragDrop += new System.Windows.Forms.DragEventHandler(this.treeView_DragDrop);
            this.treeView2.DragDrop += new System.Windows.Forms.DragEventHandler(this.treeView_DragDrop);
        }

        private void treeView_ItemDrag(object sender, System.Windows.Forms.ItemDragEventArgs e)
        {
            DoDragDrop(e.Item, DragDropEffects.Move);
   }
        private void treeView_DragEnter(object sender, System.Windows.Forms.DragEventArgs e)
        {
            e.Effect = DragDropEffects.Move;
        }

        private void treeView_DragDrop(object sender, System.Windows.Forms.DragEventArgs e)
        {
            TreeNode NewNode;

            if (e.Data.GetDataPresent("System.Windows.Forms.TreeNode", false))
            {
                Point pt = ((TreeView)sender).PointToClient(new Point(e.X, e.Y));
                TreeNode DestinationNode = ((TreeView)sender).GetNodeAt(pt);
                NewNode = (TreeNode)e.Data.GetData("System.Windows.Forms.TreeNode");
                //if (DestinationNode.TreeView != NewNode.TreeView)
                //{
                    DestinationNode.Nodes.Add((TreeNode)NewNode.Clone());
                    DestinationNode.Expand();
                    //Remove Original Node
                    NewNode.Remove();
               // }
            }
        }