
Explanation of Solution
Program
Public Class frmMain
'declaring variables of string type
Dim capital As String
Dim state As String
'display button click
Private Sub btnDisplay_Click(sender As Object, e As EventArgs) Handles btnDisplay.Click
'display state and capital on label
lblCapital.Text = String.Format(" State : {0} , Capital is : {1}", state, capital)
'change forecolor of label
lblCapital.ForeColor = Color.Maroon
'change backcolor of label
lblCapital.BackColor = Color.Yellow
End Sub
'Exit button click
Private Sub btnExit_Click(sender As Object, e As EventArgs) Handles btnExit.Click
'when this button clicked close the application
Application.Exit()
End Sub
'checkChanged event for radio button texas
Private Sub rbtTaxas_CheckedChanged(sender As Object, e As EventArgs) Handles rbtTaxas.CheckedChanged
'clear text on label
lblCapital.Text = ""
'if radio button texas is checked
If rbtTaxas.Checked = True Then
'set the value of variable capital
capital = "Austin"
'set the state name as radio button text
state = rbtTaxas.Text
End If
End Sub
'checkChanged event for radio button washington
Private Sub rbtWashington_CheckedChanged(sender As Object, e As EventArgs) Handles rbtWashington.CheckedChanged
'clear text on label
lblCapital.Text = ""
'if radio button washington is checked
If rbtWashington.Checked = True Then
'set the value of variable capital
capital = "Olympia"
'set the state name as radio button text
state = rbtWashington...

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Chapter 4 Solutions
Programming with Microsoft Visual Basic 2017
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