Working with Forms and Controls in VB.NET: Button Control

In VB.NET, a button control is a graphical control element that represents a clickable button. A button is typically used to trigger an action when clicked, such as submitting a form or validating input.

Syntax

To create a button control in VB.NET, you can use the following syntax:

Dim button As New Button
button.Name = "button1"
button.Text = "Click Me"
button.Location = New Point(10, 10)
Me.Controls.Add(button)

Here, we create a new Button object and set its Name, Text, and Location properties. We then add the button to the form using the Controls.Add method.

Example

Public Class Form1
    Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
        MsgBox("Hello, World!")
    End Sub
End Class

In this example, we have a form with a button control named Button1. When the user clicks the button, a message box is displayed with the text "Hello, World!".

Output

When the user clicks the Button1 control, a message box is displayed with the text "Hello, World!".

Explanation

In VB.NET, you can use the Handles keyword to associate an event handler with a control event. In this example, we have associated the Button1_Click sub-procedure with the Click event of the Button1 control.

When the user clicks the Button1 control, the Button1_Click sub-procedure is executed, which displays a message box with the text "Hello, World!".

Use

The button control is one of the most commonly used controls in VB.NET. It provides an easy way to trigger an action when clicked, such as performing a calculation, opening a file, or submitting a form.

Some common uses of the button control include:

• Submitting a form
• Triggering a calculation
• Opening a file dialog
• Closing a form
• Resetting form fields to default values

Important Points

• A button control is a graphical control element that represents a clickable button.
• Buttons are typically used to trigger an action when clicked.
• You can create a new button control using the Button class.
• You can associate an event handler with a button click event using the Handles keyword.

Summary

In summary, the button control is one of the most commonly used controls in VB.NET. It provides an easy way to trigger an action when clicked, such as submitting a form, opening a file, or performing a calculation. You can create a new button control using the Button class, and associate an event handler with a button click event using the Handles keyword.