TrackBar: The TrackBar control is a special slider control that allows the user to select a numeric value by changing the position of the slider. The TrackBar is controlled mainly by three properties: Minimum, Maximum and Value. Properties of TrackBar Common Properties Visually Drag Drop Object Creation Events TreeView: The TreeView control contains a hierarchy of TreeViewItem controls. It provides a way to display information in a hierarchical structure by using collapsible nodes . The top level in a tree view are root nodes that can be expanded or collapsed if the nodes have child nodes. Properties of TreeView Visually Drag Drop Constructors Object Creation Methods( )

1. Topic Name:
TrackBar & TreeView
MUAHAMMAD WASEEM ASIM
ROLL NO. 939

2. TrackBar
 The TrackBar control is a special slider control that allows the
user to select a numeric value by changing the position of the
slider.
 The TrackBar is controlled mainly by three properties:
Minimum, Maximum and Value.

3. TrackBar

4. Properties of TrackBar
 Size: Set the height and width of the control.
 BackColor: Set the back color.
 Visible: Hide / show property.
 Value: The by default value of TrackBar Maximum is 10
and Minimum is 0.

5. First Property “Size”

6. First Property “Size”

7. Second Property “BackColor”

8. Third Property “Visible”

9. Fourth Property “Value”

10. Common Properties

11. Visually Drag Drop
 This will display the “New Project” dialog as shown below,
where you should follow these steps:
1. Choose “Visual C#” from the list of templates on the left hand
side of the dialog.
2. Choose the “Windows Forms Application” template from the
center list.
3. Enter a name for the project. I’m using “Track.Bar”.
4. Uncheck the “Create directory for solution” box.

13. Visually Drag Drop
 Clicking on “Toolbox” on the left-hand side of the window, as
shown below, will display the “Toolbox” panel. I find it
convenient when I’m designing a form to click the push-pin at
the upper right of the “Toolbox” panel so that it remains visible
and is easier to access.
 The TrackBar control is not in this list and you’ll need to expand
the “All Windows Forms” and look for “TrackBar”, as shown to
the right.

15. Object Creation
 using System;
 using System.Collections.Generic;
 using System.ComponentModel;
 using System.Data;
 using System.Drawing;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 using System.Windows.Forms;
 namespace TrackBar
 {

16. Object Creation…Continue
 public partial class Form1 : Form
 {
 public Form1()
 {
 InitializeComponent();
 }
 private void trackBar1_Scroll(object sender, EventArgs e)
 {
 label1.Text = trackBar1.Value.ToString();
 }
 private void label1_Click(object sender, EventArgs e)
 {
 }

17. Object Creation…Continue
 private void Form1_Load(object sender, EventArgs e)
 {
 label1.Text = "0";
 trackBar1.Maximum = 0;
 trackBar1.Maximum = 200;
 trackBar1.TickFrequency = 5;
 }
 }
 }

18. Object Creation…Continue.. Show

19. Object Creation

20. Object Creation…Continue
 using System;
 using System.Collections.Generic;
 using System.ComponentModel;
 using System.Data;
 using System.Drawing;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 using System.Windows.Forms;
 namespace Track_Bar_with_picture_Box
 {
 public partial class Form1 : Form
 {

21. Object Creation…Continue
 public Form1()
 {
 InitializeComponent();
 }
 private void Form1_Load(object sender, EventArgs e)
 {
 trackBar1.Minimum = 0;
 trackBar1.Maximum = 400;
 pictureBox1.Left = (ClientSize.Width - pictureBox1.Width) / 2;
 pictureBox1.Top = (ClientSize.Height - pictureBox1.Height) / 2;
 }
 private void pictureBox1_Click(object sender, EventArgs e)
 {
 }

22. Object Creation…Continue
 private void trackBar1_Scroll(object sender, EventArgs e)
 {
 pictureBox1.Size = new Size(trackBar1.Value,
pictureBox1.Size.Height);
 pictureBox1.Left = (ClientSize.Width - pictureBox1.Width) / 2;
 pictureBox1.Top = (ClientSize.Height - pictureBox1.Height) / 2;
 }
 }
 }

23. Object Creation…Continue.. Show

24. Events
 Value: The by default value of TrackBar Maximum is 10 and
Minimum is 0.
 Minimum and Maximum: these two properties are used to define
the range that the thumbs can scroll over.
 i.e. trackBar1.Minimum = 0;
 i.e. trackBar1.Maximum = 200;
 LargeTickFrequency: this property is used to set the space
between the large tick marks.
 SmallTickFrequency: this property is used to set the space
between the small tick marks.
 i.e. trackBar1.TickFrequency = 5;

25. Use

26. TreeView

27. TreeView
 The TreeView control contains a hierarchy of TreeViewItem
controls. It provides a way to display information in a
hierarchical structure by using collapsible nodes . The top level
in a tree view are root nodes that can be expanded or collapsed if
the nodes have child nodes.

28. TreeView

29. Properties of TreeView
 BackColor: Gets or sets the background color of the tree
node.
 Bounds: Gets the bounds of the tree node.
 Checked: Gets or sets a value indicating whether the tree
node is in a checked state.
 FirstNode: Gets the first child tree node in the tree node
collection.
 ForeColor: Gets or sets the foreground color of the tree
node.

30. Properties of TreeView
 FullPath: Gets the path from the root tree node to the current
tree node.
 Handle: Gets the handle of the tree node.
 ImageIndex: Gets or sets the image list index value of the
image displayed when the tree node is in the
unselected state.
 ImageKey: Gets or sets the key for the image associated with
this tree node when the node is in an unselected state.

31. Visually Drag Drop
 This will display the “New Project” dialog as shown below,
where you should follow these steps:
1. Choose “Visual C#” from the list of templates on the left hand
side of the dialog.
2. Choose the “Windows Forms Application” template from the
center list.
3. Enter a name for the project. I’m using “TreeView”.
4. Uncheck the “Create directory for solution” box.

33. Visually Drag Drop
 Clicking on “TreeView” on the left-hand side of the window, as
shown below, will display the “Toolbox” panel. I find it
convenient when I’m designing a form to click the push-pin at
the upper right of the “Toolbox” panel so that it remains visible
and is easier to access.
 The TrackBar control is not in this list and you’ll need to expand
the “All Windows Forms” and look for “TreeView”, as shown to
the right.

35. Constructors
 TreeView() Initializes a new instance of the TreeView class.

36. Object Creation
 using System;
 using System.Collections.Generic;
 using System.ComponentModel;
 using System.Data;
 using System.Drawing;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 using System.Windows.Forms;
 namespace TreeView1
 {

37. Object Creation…Continue
 public partial class Form1 : Form
 {
 public Form1()
 {
 InitializeComponent();
 TreeNode tNode;
 tNode = treeView1.Nodes.Add("Welcome...");
 }
 private void treeView1_AfterSelect(object sender, TreeViewEventArgs e)
 {

38. Object Creation…Continue
 treeView1.Nodes[0].Nodes.Add("Windows");
 treeView1.Nodes[0].Nodes[0].Nodes.Add("Windows 7");
 treeView1.Nodes[0].Nodes[0].Nodes.Add("Windows 8");
 treeView1.Nodes[0].Nodes[0].Nodes[1].Nodes.Add("Windows 8.1");
 treeView1.Nodes[0].Nodes.Add("Operating System");
 treeView1.Nodes[0].Nodes[1].Nodes.Add("Unix");
 treeView1.Nodes[0].Nodes[1].Nodes.Add("Linux");
 treeView1.Nodes[0].Nodes.Add("Database");
 treeView1.Nodes[0].Nodes[2].Nodes.Add("ORACLE");
 treeView1.Nodes[0].Nodes[2].Nodes.Add("SQL SERVER");

39. Object Creation…Continue
 treeView1.Nodes[0].Nodes.Add(".net language");
 treeView1.Nodes[0].Nodes[3].Nodes.Add("C#");
 treeView1.Nodes[0].Nodes[3].Nodes.Add("vb.net");
 }
 }
 }

41. Methods( )
 Hide( )
hide the control from the user.(Inherited from Control).
 HitTest(Int32, Int32)
Provides node information, given x- and y-coordinates.
 OnBackColorChanged(EventArgs)
Raises the BackColorChanged event.(Inherited from Control.
 OnParentVisibleChanged(EventArgs)
Raises the VisibleChanged event when the Visible property value
of the control's container changes.(Inherited from Control.