Thread: Regular expression

How to use the Regular expression? Please give an example. In which circumstances we can use it? Please help

Hi There,

Regular expressions are used when the values of the objects are varying(dynamic data).

For example when you login to yahoo mail with user name "XYZ", on the top you see "Welcome XYZ" if you login as "ABC" the screen display "Welcome ABC"

You can define a regular expression as:

Dim regEx, Match, Matches ' declare variable
RegExpTest = "" ' initial the result variable
Set regEx = New RegExp ' create a regular expression object
regEx.Pattern = "[a-zA-Z0-9 ]" ' set its pattern
regEx.IgnoreCase = True ' set case insensitivity

Here "Pattern" will be your regular expression and you can use it wherever the data is dynamic.

I hope it's clear, do get back incase you still have doubts.

Regards,
Tina Mahajan.

Hi Tina,

U so lovely ! Thank you soo much for ur reply.

THis is clear with me. I have one more doubt - When we are going to parameterize we wil get a screen with a checkbox for Regular expression. My doubt is how to use and when to use that regular expression check box. You have given the coding. My doubt is here..

Please gimme the answer for this also

hi tina
i am nean u w in qtp. can u lemme know how to capture movie clip of result. in qtp 9.2.

thanks in advns

Hi Tina,

I will clear my question with an example.

Record any link. Goto Object Repository->Click on the specified link ->On the right side of the repository u can see the 'Test Object Details' - below that 'name' and 'value'. Click on the text(for example)-In the value column you can see the text of the link and the right side <#> . Click on that - you will be in "Value Configurations Options" box. There u can see the check box "Regular expression". ( )

My question is how it will be useful in that condition?

Love

Euro

Ok got it now!

When you select constant and check on the regular expression,

You can simply substitute a value with regular expression like [a-z][A-Z][0-9]
in the textbox infront of constant radiobutton.
So this will refer to any link having alphanumeric value for name property.

But when you are parameterizing, I dont think you need regular expression sice you can provide all the desired values in the data table.

Regards,
Tina Mahajan.

Hi Tina,

Still I am blank in some where:

I am giving these lines : Dim regEx, Match, Matches ' declare variable
RegExpTest = "" ' initial the result variable
Set regEx = New RegExp ' create a regular expression object
regEx.Pattern = "[a-zA-Z0-9 ]" ' set its pattern
regEx.IgnoreCase = True ' set case insensitivity

in a new script what will happen? how can I use that?

For example if i need to use the a-z , how to use. can u plz give a clear example..

Sorry..am asking the question like a stupid

Hi there,

Its ok to ask if u dont understand.

Well,
Now lets assume a scenario:

You open a google search page and use object Spy on it.
The name property for Browser has value "Google"

Now type "abcd" in the search textbox and click on Google Search button.
Use object Spy on this new page
The name property for Browser has value "Abcd - Google Search"

So you see depending on what you enter in the textbox the name property of your Browser changes.

So instead of changing the name everytime u declare a regular expression and use it as a value for that name property.

eg.

Dim regEx, Match, Matches ' declare variable
RegExpTest = "" ' initial the result variable
Set regEx = New RegExp ' create a regular expression object
regEx.Pattern = "[a-zA-Z0-9]" ' set its pattern
regEx.IgnoreCase = True ' set case insensitivity

' Global property is set to True to indicate the search applies
' to the entire string and not just the first one
regEx.Global = True

'Code to create description for Browser object.
Set desc_BrowserProperty = Description.Create()
desc_BrowserProperty("name").Value = Pattern
desc_BrowserProperty("Class Name").Value = "Browser"
desc_BrowserProperty("Index").Value = "0"

In this eg i have created regular expression as Pattern. and used it as a value for name property.

Hope that makes it clear.
Feel free to ask in case of any more doubts.

Regards,
Tina Mahajan

Dear tina, thanks soo much.. So kind heart ! i have one doubt about base filter property in qtp: i know the info like : mandatory properties : class, label assistive property : x,y co-ordinates,enable,disable,height,width optional filter properties : location, index base filter properties : ---------------- can you give a help? thanks euro

thanks for answers

Hi Tina,

R u there??