How to change TXT become int?

Question:1

74 is a txt form how to become int form ?

Question: 2

7y_4oo6!! is a txt string how to get 746 from the txt string and make 746 int form?


Thanks/
Regards,

 

Are you using ASP or ASP.NET? I will assume ASP and VBScript for now.

Response 1: Use the CInt function to convert to an Integer subtype
Response 2: Use RegEx or loop through the string to clean the string

Example (simple):

Dim strVariable
strVariable = "74"
Response.Write CInt(strVariable)

Dim strVariable2
Dim strVariable3
Dim strCharacter
strVariable2 = "7y_4oo6!!"

For i = 1 To Len(strVariable2)
   strCharacter = Mid(strVariable2,i,1)
   If IsNumeric(strCharacter) Then strVariable3 = strVariable3 & strCharacter
Next

Response.Write CInt(strVariable3)

Code (markup):

 

For asp.net you can use regex to remove anything that isn't numeric then CInt to convert to integer. e.g:

   Dim myStr As String
   Dim myInt As Integer

   myStr = "73sdf12"
   myStr = Regex.Replace(myStr, "[^0-9]+?", "")
   myInt = CInt(myStr)    'Returns 7312 as an Integer 

Code (markup):

 

In Asp ,you don't need to convert the type of text which is made up by some digital.
The second problem can using RegEx Or Using Code below:

  Function GetNumber(Str)
    On Error Resume Next
    Dim TmpStr
    Dim Counter
    For Counter = 1 to Len(Str)
        Cint(Mid(Str,Counter,1))
        If Err.Number=0 Then
          TmpStr = TmpStr & Mid(Str,Counter,1)
        End If
    Next
    GetNumber = TmpStr
  ENd Function

Code (markup):

 

I would NEVER recommend the above. The CInt function throws an error if the character is not numeric and then you check the error number to control program flow.

 

I am also think about a string without any number or empty.

 

Yes,but this is the simple way to get the number in the string.
RegEx is not easy for starter!