Solved

TextBox as Percentage

Posted on 2009-04-07
3
901 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
[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
  • 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 500 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

PeopleSoft Has Never Been Easier

PeopleSoft Adoption Made Smooth & Simple!

On-The-Job Training Is made Intuitive & Easy With WalkMe's On-Screen Guidance Tool.  Claim Your Free WalkMe Account Now

Question has a verified solution.

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

If you have ever used Microsoft Word then you know that it has a good spell checker and it may have occurred to you that the ability to check spelling might be a nice piece of functionality to add to certain applications of yours. Well the code that…
If you need to start windows update installation remotely or as a scheduled task you will find this very helpful.
As developers, we are not limited to the functions provided by the VBA language. In addition, we can call the functions that are part of the Windows operating system. These functions are part of the Windows API (Application Programming Interface). U…
Get people started with the process of using Access VBA to control Excel using automation, Microsoft Access can control other applications. An example is the ability to programmatically talk to Excel. Using automation, an Access application can laun…

739 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