Question

This project allows you to create a new graphical user interface and apply what you learned in this unit to your application project. Be sure to include the following in your interface:

1. Radio buttons that limit the user to only one choice (nested selection structure)
2. A group box for your radio buttons
3. Controls to prevent unwanted characters in text boxes
4. At least one message box
5. At least one select case statement

Using Visual Basic

Answer 1

Below is the solution:

Design:

Code:

Public Class frmMain
    Private Sub txtName_KeyPressed(sender As Object, e As KeyPressEventArgs)
        'allow only To enter the letter and digit and back key
        If Not Char.IsLetterOrDigit(e.KeyChar) Or e.KeyChar = ControlChars.Back Then
            e.Handled = True
        End If
    End Sub

    Private Sub frmMain_Load(sender As Object, e As EventArgs) Handles MyBase.Load
        CenterToScreen() 'center form on the screen
        rbtnFemale.Checked = False
        rbtnMale.Checked = False
        rbtnOthers.Checked = False
    End Sub

    Private Sub txtName_KeyDown(sender As Object, e As KeyEventArgs) Handles txtName.KeyDown
        Dim gender As String
        If e.KeyCode = Keys.Enter Then 'Enter button pressed event detect
            If txtName.Text = "" Then
                MessageBox.Show("Please enter Name")
            Else
                Select Case True
                    Case rbtnFemale.Checked
                        gender = "Female"
                    Case rbtnMale.Checked
                        gender = "Male"
                    Case rbtnOthers.Checked
                        gender = "Others"
                    Case Else
                        MessageBox.Show("Please select gender")
                End Select
            End If
            MessageBox.Show("Name is: " & txtName.Text & vbNewLine & "Gender is: " & gender)
        End If
    End Sub
End Class

sample output: