Solved

Random maths symbol into textbox

Posted on 2003-12-02
5
729 Views
Last Modified: 2008-03-04
How can i make a random maths symbol, plus, minus, divide, multiply appear into a text box at the click of a button.
0
Comment
Question by:s1555
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
5 Comments
 

Expert Comment

by:Vrenox
ID: 9858827
Not the best way maybe but the easiest I could think of.. put the math symbols in a hashtable paired with a number from 0 to 3 like so:

Private myHashTable As New HashTable
myHashTable.Add(0, "+")
        myHashTable.Add(1, "-")
        myHashTable.Add(2, "*")
        myHashTable.Add(3, "/")

then in the buttonclick handler all you have to do is the following:

  Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
    Dim myRandomNumGen As New Random
        MathSignText.Text = ""  'Clean up old value
        MathSignText.Text = myHashTable(myRandomNumGen.Next(4))
End Sub

This should do it


0
 
LVL 12

Accepted Solution

by:
roverm earned 250 total points
ID: 9858927
Or simply do this in the onclick event:

        Randomize()
        txtBox.Text = Mid("+-/*", Int(Rnd() * 4) + 1, 1)

D'Mzzl!
RoverM
0
 
LVL 9

Expert Comment

by:malharone
ID: 9871724
i liked roverm's style the best !! simple and does the work.. though could be more generalized

public sub printRandomChar()
        Randomize()
        dim chars as string = "+-/*"
        txtBox.Text = Mid(chars, Int(Rnd() * chars.length) + 1, 1)
end sub


so .. now, all you'd have to do is change the value of chars, and you'd have to remember to change the max. value of string.
0
 
LVL 96

Expert Comment

by:Bob Learned
ID: 10287349
No comment has been added lately, so it's time to clean up this TA.
I will leave the following recommendation for this question in the Cleanup topic area:

Accept: roverm {http:#9858927}

Please leave any comments here within the next seven days.
PLEASE DO NOT ACCEPT THIS COMMENT AS AN ANSWER!

TheLearnedOne
EE Cleanup Volunteer
0

Featured Post

Webinar: Aligning, Automating, Winning

Join Dan Russo, Senior Manager of Operations Intelligence, for an in-depth discussion on how Dealertrack, leading provider of integrated digital solutions for the automotive industry, transformed their DevOps processes to increase collaboration and move with greater velocity.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

It seems a simple enough task, yet I see repeated questions asking how to do it: how to pass data between two forms. In this article, I will show you the different mechanisms available for you to do just that. This article is directed towards the .N…
Today I had a very interesting conundrum that had to get solved quickly. Needless to say, it wasn't resolved quickly because when we needed it we were very rushed, but as soon as the conference call was over and I took a step back I saw the correct …
Nobody understands Phishing better than an anti-spam company. That’s why we are providing Phishing Awareness Training to our customers. According to a report by Verizon, only 3% of targeted users report malicious emails to management. With compan…

735 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question