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VB.Net Winform - TextBox Validation



VS 2005 / Vb.Net - Windows Application

I have almost 30 TextBox - For which i need  to handle Events like only Characters or Numbers ?

1) How to perform this

2) Is there any way  to write a Common Class and pass it on Event Handler of TextBox

Or Do i need to write some code on each and every textbox
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chokka
Asked:
chokka
3 Solutions
 
MikkkCommented:

1 - Name every textbox different as if they has to be numeric values or text values, for example NTextBox1 will be numeric and TTextBox1 eill be text
2 - Assign the save procedure to each event of each control, and make this procedure process one or other thing by his name like the code attached.




    Private Sub TextBox_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles NTextBox1.TextChanged, NTextBox2.TextChanged, TTextBox1.TextChanged
        If sender.name.startswith("N") Then
            'is a numeric field
        Else
            'is a char field
        End If
    End Sub

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Carl TawnSystems and Integration DeveloperCommented:
You're better option would be to create a custom control, derived from textbox, that implements this custom behaviour. But I guess it depends on how much time you have to devote to something like that.
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ArkCommented:
For numeric only you can set ES_NUMBER style
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Éric MoreauSenior .Net ConsultantCommented:
0
 
MikkkCommented:
What I've written maybe is not the best way, but is the fastest way is you has the form drawn and the controls positioned.
If you only want to validate numbers, chars when an event occurs (in the example TextChanged but can be Validated) this is a fast solution.
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John (Yiannis) ToutountzoglouInstructor Multiengine PilotCommented:
Select all the textboxes You want for raising the same event handler and find the event in properties window, doubleclick it or write a event handler name. This will add one event handler for all selected controls.
Hope it helps
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