validation on number

Following is an example on how to validate an number

Code:

<!--  form to enter a number to be validated  . -->
<form method="get" action ="<%= Request.ServerVariables("SCRIPT_NAME") %>" > 
<input type ="text" name="number"><br> 
<input type="submit"> 
</form> 
<% 
Dim strNumber , intNumber , blnFlag 
If Request.ServerVariables("CONTENT_LENGTH") <> 0 Then 
strNumber = Trim(Request.form("number")) 
' check if strNumber is a number.
If isNumeric(strNumber ) Then 
' convert from string to integer.
intNumber = CInt(strNumber ) 
' if number less than 10 then success 
If 10 >= intNumber Then 
blnFlag = True 
End If 
'if a number is entered then display this 
Else 
Response.Write "not  valid number<br>" 
End If 
'number is entered ok .
'check the value of boolean 
If blnFlag = True Then 
Response.Write("Number = " & intNumber ) 
 print message for invalid number.
Else 
Response.Write("Enter an number less than 10 ") 
End If 
End If 
%>
 

_________________
M. S. Rakha, Ph.D.
Queen's University
Canada

Author: DrRakha
Mastermind

Posts: 2715
Have thanks: 74 time

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