Want to protect your cyber security and still get fast solutions? Ask a secure question today.Go Premium

x
?
Solved

TextBox as Percentage

Posted on 2009-04-07
3
Medium Priority
?
906 Views
Last Modified: 2012-06-27
Hi.  I basically want a text box entry to be a percentage. So, if the user enters 100 its 100 percent of a value. 50 would be 50 percent (.50) and so on.  In the database its simply a decimal.  How would I go about doing this?

Thanks!!!
0
Comment
Question by:suicehockey44
  • 2
3 Comments
 
LVL 48

Expert Comment

by:jpaulino
ID: 24087377
You can do something like this
 

        Dim value As Integer = 50
        Debug.WriteLine(FormatPercent(value / 100))

Open in new window

0
 

Expert Comment

by:spacerat60
ID: 24087448
I Think you are asking a Type casting question

also you might want to sanitize the input to make sure it is within range of percentages (less than 1 and greater than 0)
Function getValue(TextBox tb)
    Dim percent As Double
    
    'Cast String to double
    percent = CDBL(tb.value)
    IF( (percent/100) <= 1 and (percent/100) >= 0 )
        getValue = percent
    ELSE
       'invalid percentage value
    ENDIF
ENDF

Open in new window

0
 
LVL 48

Accepted Solution

by:
jpaulino earned 1500 total points
ID: 24087496
Here's another validation if you want to format the textbox on leave event
    Private Sub TextBox1_Leave(ByVal sender As Object, ByVal e As System.EventArgs) Handles TextBox1.Leave
        If Integer.TryParse(Me.TextBox1.Text, New Integer) AndAlso Me.TextBox1.Text >= 0 AndAlso Me.TextBox1.Text <= 100 Then
            Me.TextBox1.Text = FormatPercent(Me.TextBox1.Text / 100)
        Else
            Me.TextBox1.Text = String.Empty
        End If
    End Sub

Open in new window

0

Featured Post

What does it mean to be "Always On"?

Is your cloud always on? With an Always On cloud you won't have to worry about downtime for maintenance or software application code updates, ensuring that your bottom line isn't affected.

Question has a verified solution.

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

When trying to find the cause of a problem in VBA or VB6 it's often valuable to know what procedures were executed prior to the error. You can use the Call Stack for that but it is often inadequate because it may show procedures you aren't intereste…
Enums (shorthand for ‘enumerations’) are not often used by programmers but they can be quite valuable when they are.  What are they? An Enum is just a type of variable like a string or an Integer, but in this case one that you create that contains…
Show developers how to use a criteria form to limit the data that appears on an Access report. It is a common requirement that users can specify the criteria for a report at runtime. The easiest way to accomplish this is using a criteria form that a…
This lesson covers basic error handling code in Microsoft Excel using VBA. This is the first lesson in a 3-part series that uses code to loop through an Excel spreadsheet in VBA and then fix errors, taking advantage of error handling code. This l…
Suggested Courses

564 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