Wednesday, May 12, 2021

Odd and Even Numbers in Julia

 A simple program that I wrote to ask the user to give a number and then the program will check if the given number is an odd or even number.

I am currently accepting programming work, IT projects, school and application development, programming projects, thesis and capstone projects, IT consulting work, computer tutorials, and web development work kindly contact me at the following email address for further details.  If you want to advertise on my website kindly contact me also in my email address also. Thank you.

My email address is jakerpomperada@gmail.com and jakerpomperada@yahoo.com







Program Listing

#=
odd_even.jl
Jake R. Pomperada, MAED-IT, MIT
www.jakerpomperada.com   www.jakerpomperada.blogspot.com
jakerpomperada@gmail.com
Bacolod City, Negros Occidental
=#
println()
print("\tOdd and Even Numbers in Julia")
println("\n")
print("\tGive a Number  : ")
val_num = parse(Int, readline(stdin))
println()
if (val_num % 2 == 0)
   println("\tThe given number ",val_num, " is even number.")
else
   println("\tThe given number ",val_num, " is odd number.")
end
println()
print("\tEnd of Program")
println("\n")


Tuesday, May 11, 2021

Persons Address Book Using Microsoft Visual Basic NET and Microsoft Access

Persons Address Book in Visual Basic .NET And Microsoft Access

A simple Persons Address Book in Visual Basic .NET  And Microsoft Access database applications that I wrote while I am learning database programming in Visual Basic NET.

I am currently accepting programming work, IT projects, school and application development, programming projects, thesis and capstone projects, IT consulting work, computer tutorials, and web development work kindly contact me at the following email address for further details.  If you want to advertise on my website kindly contact me also in my email address also. Thank you.

My email address is jakerpomperada@gmail.com and jakerpomperada@yahoo.com











Complete Program Listing of Persons Address Book in Microsoft Visual Basic .NET, and Microsoft Access

 

Imports System.Data.OleDb

Imports System.IO

 

Public Class Form1

 

    Dim strConn = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=addressbook.accdb;Persist Security Info=False;"

    Dim con As New OleDbConnection

    Dim cmd As New OleDbCommand

    Dim da As New OleDbDataAdapter

    Dim dt As New DataTable

    Dim save_tag As String

 

    Sub Fill_Grid(grid As Windows.Forms.DataGridView)

        Dim x As Integer

 

        If grid.Rows.Count > 0 Then

            While x < grid.Rows.Count

                grid.Rows.RemoveAt(x)

            End While

        End If

 

        With grid

            .AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.Fill

            .RowHeadersVisible = False

            .SelectionMode = DataGridViewSelectionMode.FullRowSelect

        End With

 

        con.ConnectionString = strConn

        con.Open()

 

        With cmd

            .Connection = con

            .CommandType = CommandType.Text

            .CommandText = "SELECT * FROM addressbook"

        End With

        da.SelectCommand = cmd

        grid.DataSource = dt

        da.Fill(dt)

 

        For i As Integer = 0 To 0

            grid.Columns(i).Visible = False

        Next

        grid.Columns(0).Visible = False

 

        con.Dispose()

        con.Close()

 

    End Sub

    Sub save(ByVal tag As String)

 

        Dim cmdtxt As String = Nothing

        If tag = "new" Then

            cmdtxt = "INSERT INTO addressbook ([personsname], [address], [telephone], [mobile], [email]) " & _

                     "Values('" & UCase(TextBox1.Text) & "','" & UCase(TextBox2.Text) & "','" & UCase(TextBox3.Text) & "','" & UCase(TextBox4.Text) & "','" & LCase(TextBox5.Text) & "' ) "

 

        ElseIf tag = "edit" Then

            cmdtxt = "UPDATE addressbook SET " & _

                     "[personsname] = '" & UCase(TextBox1.Text.ToString) & "',[address] = '" & UCase(TextBox2.Text) & "', [telephone] = '" & UCase(TextBox3.Text) & "' , [mobile] ='" & UCase(TextBox4.Text) & "' ,[email]='" & LCase(TextBox5.Text) & "' " & _

                     "WHERE ID = " & TextBox6.Text & ""

        End If

 

        Try

 

            con.ConnectionString = strConn

            con.Open()

 

            With cmd

                .Connection = con

                .CommandType = CommandType.Text

                .CommandText = cmdtxt

            End With

 

            cmd.ExecuteNonQuery()

 

        Catch ex As Exception

            MsgBox(ex.Message, vbCritical)

        Finally

            con.Dispose()

            con.Close()

        End Try

    End Sub

 

    Sub delete(ByVal id As Integer)

        Dim cmdtxt As String = Nothing

 

        cmdtxt = "DELETE FROM addressbook WHERE ID = " & id & ""

 

        Try

            con.ConnectionString = strConn

            con.Open()

 

            With cmd

                .Connection = con

                .CommandType = CommandType.Text

                .CommandText = cmdtxt

            End With

 

            cmd.ExecuteNonQuery()

 

        Catch ex As Exception

            MsgBox(ex.Message, vbCritical)

        Finally

            con.Dispose()

            con.Close()

        End Try

    End Sub

 

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

        TextBox6.Visible = False

        save_tag = "new"

        Fill_Grid(DataGridView1)

    End Sub

 

    ' New Button

    ' To clear the text box which allows the user to type new record

 

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

        TextBox1.Text = String.Empty

        TextBox2.Text = String.Empty

        TextBox3.Text = String.Empty

        TextBox4.Text = String.Empty

        TextBox5.Text = String.Empty

        TextBox1.Focus()

 

        save_tag = "new"

    End Sub

 

 

    ' Save Button

    ' This button will allow that user to save the new or updated records in

    ' the Microsoft Access database.

 

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

        save(save_tag)

        Button1.PerformClick()

        Fill_Grid(DataGridView1)

 

    End Sub

 

    ' Delete Button

    ' This button will allows the user to remove a particular record from the database in Microsoft Access.

 

    Private Sub Button3_Click(sender As Object, e As EventArgs) Handles Button3.Click

        Dim id As Integer

        id = Val(TextBox6.Text)

        delete(id)

        Button1.PerformClick()

        Fill_Grid(DataGridView1)

    End Sub

 

    Private Sub DataGridView1_CellMouseClick(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellMouseEventArgs) Handles DataGridView1.CellMouseClick

        TextBox1.Text = DataGridView1.Rows(e.RowIndex).Cells(1).Value.ToString

        TextBox2.Text = DataGridView1.Rows(e.RowIndex).Cells(2).Value.ToString

        TextBox3.Text = DataGridView1.Rows(e.RowIndex).Cells(3).Value.ToString

        TextBox4.Text = DataGridView1.Rows(e.RowIndex).Cells(4).Value.ToString

        TextBox5.Text = DataGridView1.Rows(e.RowIndex).Cells(5).Value.ToString

        TextBox6.Text = DataGridView1.Rows(e.RowIndex).Cells(0).Value.ToString

 

        save_tag = "edit"

 

    End Sub

 

    ' Cancel Button

    ' The cancel button which allows the user to cancel the operation

    ' and return to the main menu of Persons Address Book.

 

    Private Sub Button4_Click(sender As Object, e As EventArgs) Handles Button4.Click

        Button1.PerformClick()

    End Sub

    ' Close Button

    ' This button will allow the user to close the program and return to the windows operating system.

 

    Private Sub Button5_Click(sender As Object, e As EventArgs) Handles Button5.Click

        If MsgBox("Are you sure you want to quit?", MsgBoxStyle.YesNo Or MsgBoxStyle.DefaultButton2, "Close application") = Windows.Forms.DialogResult.Yes Then

            Me.Close()

        End If

        TextBox1.Focus()

    End Sub

End Class

 

DOWNLOAD THE COMPLETE SOURCE CODE HERE

Monday, May 10, 2021

Hello World in Dart

Hello World in Dart

 I simple hello world program that I wrote using Dart programming language.

I am currently accepting programming work, IT projects, school and application development, programming projects, thesis and capstone projects, IT consulting work, computer tutorials, and web development work kindly contact me at the following email address for further details.  If you want to advertise on my website kindly contact me also in my email address also. Thank you.

My email address is jakerpomperada@gmail.com and jakerpomperada@yahoo.com






Program Listing


hello_world.dart


void main() {
  print("Hello World in Dart.");
 }