[mdk]

Can anyone give me some tips how to build a simple calculator in VB; i got the interface with buttons and text box alredy and i figured out how to put more then one number using buttons alredy(Disp.Text = Disp.Text & 1) , Looking at the windows calc, how do you store the number u just entered into a text box and alowe user to enter another to performe calculations, what code should i use for equal button and etc. any feadback,instr. hints, code, will be appreciated...Thanks

[Xenon]

ok since what your trying to do is a very common project ill suggest you look at this Vb.net Calculator Project , its got nice explanation

This post has been edited by Xenon: 20 March 2006 - 02:58 PM

[mdk]

thanks

[vatyk]

Hi! I need to build a calculator, but I need to insert the numbers in a text box using my keyboard. Can anyoane help me with this? I don't know how to make the text box accept only numbers and how to work with the numbers I assign (from keyboard). Thank you.

[PsychoCoder]

I have written a tutorial on creating a calculator in VB.Net

Basic Calculator in VB.Net

[seadannie]

Xenon, on 20 Mar, 2006 - 02:56 PM, said:

ok since what your trying to do is a very common project ill suggest you look at this Vb.net Calculator Project , its got nice explanation

I went to this site but I'm stuck on the equals button exercise. There is a third line of code that resets the variable total1 to zero and I'm having trouble thinking of what it is.

Here is my code:

Public Class Form1

	Dim total1 As Integer
	Dim total2 As Integer

	Private Sub btn3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnthree.Click

		txtDisplay.Text = txtDisplay.Text & btnthree.Text

	End Sub

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

	End Sub

	Private Sub btn7_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnseven.Click

		txtDisplay.Text = txtDisplay.Text & btnseven.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 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 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 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 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

End Sub
End Class

I think I figured it out. Here is what I did.

total1 = btnzero.Text

I can't believe it took me a whole day to figure that out.

This post has been edited by seadannie: 26 July 2008 - 10:15 PM

[EnvXOwner]

vatyk, on 8 Sep, 2007 - 08:41 AM, said:

Hi! I need to build a calculator, but I need to insert the numbers in a text box using my keyboard. Can anyoane help me with this? I don't know how to make the text box accept only numbers and how to work with the numbers I assign (from keyboard). Thank you.

Just add textbox to your form and type stuff into it that simple

[some_kid]

Why has this thread been revived every year since 2006?


If any more questions come up check PsychoCoders tutorial for a basic calculator.
If you need a more advance calculator check http://www.vbprogram...dCalculator.htm




Remember people when 2010 comes post in here