jckryan157
New member
- Joined
- Dec 14, 2009
- Messages
- 1
- Programming Experience
- Beginner
Hello. I am new to visual basic 2008, and i started with simple project-calculator. I made it to the point where "+" sign works, and "=" sign execute the command of "+" sign. Now i try to make "-" sign work: the problem is, idk how to bind it with "=". Here is the code:
Question is:
How can i use "if" (conditional) statement or do i need to use it at all in this code:
And do i need to add another value like:
and use it as a "-" button:
VB.NET:
Public Class Form1
Dim total1 As Integer
Dim total2 As Integer
Private Sub btnOne_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnOne.Click
txtDisplay.Text = txtDisplay.Text & btnOne.Text
End Sub
Private Sub btnTwo_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnTwo.Click
txtDisplay.Text = txtDisplay.Text & btnTwo.Text
End Sub
Private Sub btnThree_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnThree.Click
txtDisplay.Text = txtDisplay.Text & btnThree.Text
End Sub
Private Sub btnFour_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnFour.Click
txtDisplay.Text = txtDisplay.Text & btnFour.Text
End Sub
Private Sub btnFive_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnFive.Click
txtDisplay.Text = txtDisplay.Text & btnFive.Text
End Sub
Private Sub btnSix_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSix.Click
txtDisplay.Text = txtDisplay.Text & btnSix.Text
End Sub
Private Sub btnSeven_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSeven.Click
txtDisplay.Text = txtDisplay.Text & btnSeven.Text
End Sub
Private Sub btnEight_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnEight.Click
txtDisplay.Text = txtDisplay.Text & btnEight.Text
End Sub
Private Sub btnNine_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnNine.Click
txtDisplay.Text = txtDisplay.Text & btnNine.Text
End Sub
Private Sub btnZero_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnZero.Click
txtDisplay.Text = txtDisplay.Text & btnZero.Text
End Sub
Private Sub cmdPlus_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdPlus.Click
total1 = total1 + Val(txtDisplay.Text)
txtDisplay.Clear()
End Sub
Private Sub cmdEquals_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdEquals.Click
total2 = total1 + Val(txtDisplay.Text)
txtDisplay.Text = total2
total1 = 0
End Sub
Private Sub cmdClear_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdClear.Click
txtDisplay.Clear()
End Sub
Private Sub cmdMinus_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdMinus.Click
total1 = total1 - Val(txtDisplay.Text)
txtDisplay.Clear()
End Sub
End Class
How can i use "if" (conditional) statement or do i need to use it at all in this code:
VB.NET:
total2 = total1 + Val(txtDisplay.Text)
txtDisplay.Text = total2
total1 = 0
VB.NET:
Dim total3 As Integer
VB.NET:
Private Sub cmdMinus_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdMinus.Click
total3 = total3 - Val(txtDisplay.Text)
txtDisplay.Clear()
End Sub
Please Help. Thank you.