Phone Book Application Program In Visual Basic 2008/2010/.NET - VB Tutorials - Basics Projects

For Phone Book Application Program you need 2 Forms

Form1: Will be used to search contacts.



Form2: Will be used to add new contacts.



Form1: Add a textbox, a list-box, a label and 2 buttons:

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Double click on textbox1 and the following code:

Private Sub TextBox1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) HandlesTextBox1.TextChanged

        Dim item As String = TextBox1.Text.ToString()

        Dim index As Integer = ListBox1.FindString(item)

        If index = -1 Then

            ListBox1.SelectedIndex = ListBox1.SelectedIndex

        Else

            ListBox1.SetSelected(index, True)

        End If

    End Sub

Add New Contact button code:

Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click

        Form2.Show()

    End Sub

Click on Project menu, then click on the last menu, (in this project: Simple Phone Book Properties)

 

Then click on Settings tab.
Add Names under Name Column, and System.Collections.Specialized.StringCollection under Type:

Add the following code to Form1.Load event:

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

        Try

            For Each Name As String In My.Settings.Names

                ListBox1.Items.Add(Name)

            Next

        Catch ex As Exception

        End Try

    End Sub

Add the following code to Remove Contact Button:

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

        If ListBox1.SelectedIndex < 0 Then

        Else

            Dim ask As MsgBoxResult

            ask = MsgBox("Are you sure you want to remove " & ListBox1.SelectedItem & " ?", MsgBoxStyle.YesNo)

            If ask = MsgBoxResult.Yes Then

                My.Settings.Names.Remove(ListBox1.SelectedItem)

                My.Settings.Save()

                ListBox1.Items.Clear()

                For Each Name As String In My.Settings.Names

                    ListBox1.Items.Add(Name)

                Next

            ElseIf ask = MsgBoxResult.No Then

            End If

        End If

    End Sub

Form2: Add 2 textboxes, 2 labels and 2 buttons:

Cancel Button Code:

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

        Me.Close()

    End Sub

Save Button Code: 

Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click

        If My.Settings.Names Is Nothing Then

            If TextBox1.Text = "" Or TextBox2.Text = "" Then

                MsgBox("Must Fill all Fields")

            Else

                My.Settings.Names.Add(TextBox1.Text + " - " + TextBox2.Text)

                My.Settings.Save()

                Me.Close()

            End If

        Else

            If TextBox1.Text = "" Or TextBox2.Text = "" Then

                MsgBox("Must Fill all Fields")

            Else

                My.Settings.Names.Add(TextBox1.Text + " - " + TextBox2.Text)

                My.Settings.Save()

                Me.Close()

            End If

        End If

        TextBox1.Clear()

        TextBox2.Clear()

        Form1.ListBox1.Items.Clear()

        For Each Name As String In My.Settings.Names

            Form1.ListBox1.Items.Add(Name)

        Next

    End Sub