What is ScrollBar Control in VB.net?
A ScrollBar Control in VB.net is used to create and show vertical and horizontal scroll bars on the Windows form.
It is used when there is a lot of information in a form and we can’t see all of it.
Therefore, we used the VB.NET ScrollBar Control. In general, there are two kinds of ScrollBar: HScrollBar for horizontal scroll bars and VScrollBar for vertical scroll bars.
Let’s create a Scroll Bar in VB.net by dragging a Scroll Bar Control from the Toolbox and dropping it on the form.
ScollBar Control in VB.net Properties
The following given below are some commonly used Properties of the ScrollBar Control
| # | ScollBar Control in VB.net Properties | Description |
|---|---|---|
| 1. | AutoSize | Gets or sets a value indicating whether the ScrollBar is automatically resized to fit its contents. |
| 2. | BackColor | Gets or sets the background color for the control. |
| 3. | ForeColor | Gets or sets the foreground color of the scroll bar control. |
| 4. | ImeMode | Gets or sets the Input Method Editor (IME) mode supported by this control. |
| 5. | LargeChange | Gets or sets a value to be added to or subtracted from the Value property when the scroll box is moved a large distance. |
| 6. | Maximum | Gets or sets the upper limit of values of the scrollable range. |
| 7. | Minimum | Gets or sets the lower limit of values of the scrollable range. |
| 8. | SmallChange | Gets or sets the value to be added to or subtracted from the Value property when the scroll box is moved a small distance. |
| 9. | Value | Gets or sets a numeric value that represents the current position of the scroll box on the scroll bar control. |
ScrollBar Control in VB.net Methods
The following given below are some commonly used Methods of the ScrollBar Control.
| # | ScrollBar Control in VB.net Methods | Description |
|---|---|---|
| 1. | UpdateScrollInfo | It is used to update the ScrollBar control using the Minimum, maximum, and the value of LargeChange properties. |
| 2. | OnScroll(ScrollEventArgs) | It is used to raise the Scroll event in the ScrollBar Control. |
| 3. | OnEnabledChanged | It is used to raise the EnabledChanged event in the ScrollBar control. |
| 4. | Select | It is used to activate or start the ScrollBar control. |
| 5. | OnValueChanged(EventArgs) | It is used to raise the ValueChanged event in the ScrollBar control. |
ScrollBar Control in VB.net Events
The following given below are some commonly used Events of the ScrollBar Control in VB.net.
| # | ScrollBar Control in VB.net Events | Description |
|---|---|---|
| 1. | AutoSizeChanged | The AutoSizeChanged event is found in the ScrollBar control when the value of the AutoSize property changes. |
| 2. | Scroll | The Scroll event is found when the Scroll control is moved. |
| 3. | TextChangedEvent | It occurs in the ScrollBar control when the value of the text property changes. |
| 4. | ValueChanged | A ValueChanged event occurs when the property of the value is changed programmatically or by a scroll event in the Scrollbar Control. |
Let’s create a simple program to understand the use of ScrollBar Control in the VB.NET Windows Forms.
Public Class Form1
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
Me.Text = "itsourcecode.com" 'Set the title for a Windows Form
Label1.Text = "Use of ScrollBar Control in Windows Form"
Label1.ForeColor = Color.DarkBlue
Me.AutoScroll = True
Me.VScrollBar1.Minimum = 0
Me.VScrollBar1.Maximum = 100
Me.VScrollBar1.Value = 0
Me.VScrollBar1.BackColor = Color.Blue
Me.HScrollBar1.Minimum = 0
Me.HScrollBar1.Maximum = 100
Me.HScrollBar1.Value = 35
End Sub
End ClassProgram Output:
Summary
A VB.net ScrollBar Control is used to add Vertical and Horizontal scrolling features to a Windows Forms control that does not have a built-in scrolling feature.
In this article, we discussed How To Create a ScrollBar Control VB.net using Microsoft Visual Studio in Windows Forms at design-time as well as run-time.
After that, we saw how to use various Properties, Methods, and Events.
PREVIOUS
