Drag and drop Button control from toolbox on windows form.

Drag and drop a TextBox change the name of Button

Code:

 Public Class Form3
  
 Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        'TextBox1 value will show in MessageBox
        MessageBox.Show(TextBox1.Text)
 End Sub
 End Class

Run the Project

When you insert any value or text and click submit button then inserted text will show in the Message box.

Designating a Button as the Cancel Button.

On Windows Form you can designate a Button control to be the cancel button. A cancel button is clicked whenever the user presses the ESC key.

Private Sub Form3_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load       
        'set button1 as cancell button
        Me.CancelButton = Button1
 End Sub
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Me.Close()'close window Form
 End Sub

Output:

When you press Esc key on the keyboard then Window Form will closed.

 Properties of Button:

BackColor

Through BackColor properties we can change BackColor of Button.

Private Sub Form3_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        'change backcolor of button
        Button1.BackColor = Color.CadetBlue
 End Sub

At run time backcolor of button will be changed.

ForeColor:

Through BackColor properties we can change ForeColor of Button.

 Private Sub Form3_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        ' change ForeColor of button text
        Button1.ForeColor = Color.Red
     End Sub

At run time Forecolor of button will be changed.

We can change both BackColor and ForeColor simultaneously.

 Private Sub Form3_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        '' change BackColor of button tex
        Button1.BackColor = Color.CadetBlue
        ' change ForeColor of button text
        Button1.ForeColor = Color.Red
     End Sub