Numeric, Alpha Numeric ,Alpha, Amount validations

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Hello

I want know how to do following validations in VB.Net on Textbox for eg i have form like this :

Name : textbox(i want only Alpha Validation Here

Address : Textbox (i want Alpha Numeric Validation Here

Number : Textbox (i want Only Numeric validation here

Monthly Fees : i want Amount validation here like 10,000 like commas , Decimal Points

Kinly Please Help Me

Posted 20-Aug-14 19:28pm

Member 11014751

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[no name] 21-Aug-14 1:38am

It's a web or windows application..??

Member 11014751 21-Aug-14 1:54am

Tell Me for both if possible ,
Now i want for Windows

2 solutions

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OriginalGriff · Answer 1 · 2014-08-20T20:06:00

Solution 1

First off, validating names to alpha only is a poor idea - you can't guarantee that names will only contain A-Z, a-z
Non-Western names, idiot parents, legal change-of-names can all add characters outside that range

Address: same problem.

But numbers are easy: integer.TryParse or double.TryParse will check and convert strings to numbers allowing for local number format settings: remember that 1,000.345 is not the only format: 1.234,567 is legal in many places.

Posted 20-Aug-14 20:06pm

OriginalGriff

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Member 11014751 21-Aug-14 2:51am

Thanks but in names and address fields i dont want anyone to write special characters . In name only A-Z-a-z allowed . i want email validation also

OriginalGriff 21-Aug-14 4:12am

And what have you done so far?

kgmmurugesh · Answer 2 · 2014-08-20T21:17:00

Solution 2

add your own function to check whatever you want.

Private Function isvalidnumeric(ByVal pobject As Object) As Boolean
Dim linti As Integer
Dim lstrnumeric As String = "0123456789.,"

For i = 1 To Len(pobject)
If InStr(lstrnumeric, Mid(pobject, i, 1)) = 0 Then
isvalidnumeric = False
Exit Function
End If
Next

isvalidnumeric = True
End Function

Posted 20-Aug-14 21:17pm

kgmmurugesh

Updated 20-Aug-14 21:19pm

v3

Comments

Member 11014751 21-Aug-14 3:31am

Thanks Numeric is Done , How to do for Alpha, AplhaNumeric & Amount

Member 11014751 21-Aug-14 7:10am

Please Give me for Alpha, AplhaNumeric & Amount

kgmmurugesh 21-Aug-14 7:19am

only change the lstrnumeric string to "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ" for alpha, "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ123456789" for alpha numerice, "1234567890.,$" for amount.

Member 11014751 21-Aug-14 7:38am

This Code Not Working

kgmmurugesh 21-Aug-14 10:18am

give me your code