//************************************** // Name: Addition of Two Numbers in Visual Basic.NET // Description:A simple program that I wrote using Visual Basic.NET to add the sum of two numbers. I'm just learning Visual Basic.NET primarily because my experience before in programming in using Visual Basic 6 it is a good learning experience on my part. Add me at Facebook my address is jakerpomperada@gmail.com and jakerpomperada@yahoo.com My mobile number here in the Philippines is 09173084360. // By: Jake R. Pomperada // // // Inputs:None // // Returns:None // //Assumes:None // //Side Effects:None //************************************** Public Class Form1 Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click Dim sum As Integer Dim a As Integer Dim b As Integer Label4.Visible = True If TextBox1.Text = "" Then Label4.Visible = False MessageBox.Show("Sorry cannot be empty.") TextBox1.Focus() End If a = Val(TextBox1.Text) b = Val(TextBox2.Text) sum = (a + b) Label4.Text = "The sum of " & a & " and " & b & " is " & sum & "." End Sub Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load Label4.Visible = False End Sub Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click TextBox1.Text = "" TextBox2.Text = "" Label4.Text = "" TextBox1.Focus() End Sub End Class