Crystal Report formula meaning

Hi I have formula in crystal Report .

stringVar strTemp :=  "From Date: "
+ FormatDate ({@DateFormat}, DTSToDate({@FromDate}))
+ NewLine () + "To Date: " + FormatDate ({@DateFormat}, DTSToDate({@ToDate}));

if {@UserId} <> "" then
strTemp := strTemp + NewLine() + "User ID: " + {@UserId};

strTemp

can any one please tell me meaning of this?

I want to convert this into ssrs report.

Thanks.
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Commented:
Hi riks,
We can go through it piece by piece:

- - - - -
stringVar strTemp :=  "From Date: "
+ FormatDate ({@DateFormat}, DTSToDate({@FromDate}))
+ NewLine () + "To Date: " + FormatDate ({@DateFormat}, DTSToDate({@ToDate}));
- - - - -

A variable called 'strTemp' is created. It has a data type of 'string'
It will hold the following string:

From Date: 08/16/2013
To Date: 10/01/2013

(The dates are just an example)

"DTSToDate({@FromDate})" is a function called 'Date Time String To Date'. It takes a string of text and tries to convert it into an actual date. The string of text must be in a proper format otherwise the function will fail. It returns only the Date (not the time). So for example if you feed "2013/08/16 10:15:27" into this function, it returns "2013/08/16"

It is placed inside of another function called "FormatDate", which formats the date according to your specified parameter.

"NewLine()" I suppose gives you a new line (lfcr) although I have never seen it. (What version of Crystal Reports are you using?)

OK, so far your variable contains the following:

From Date: 08/16/2013
To Date: 10/01/2013

The next block of code checks to see if "UserId" is not empty. (UserId is a custom formula in your report).

If UserId is NOT empty, it will add a new line, and then "User ID: John Smith" to the variable.

So... if UserId contains a value, your variable will now look like this:

From Date: 08/16/2013
To Date: 10/01/2013
User ID: John Smith

On the other hand, if UserId does NOT contain a value, this 'if' block of code is skipped, and therefore your variable will still look like this:

From Date: 08/16/2013
To Date: 10/01/2013

The final line of code:

- - - - -
strTemp
- - - - -

...This returns whatever is stored in the variable "strTemp"
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Commented:
ecarbone has given you a very detailed answer.  I'll just add that, like FormatDateTime in your other question, FormatDate is not a valid function in CR 10.  It may be a function in the version that you have.  Otherwise, it's a custom function on your system.

James
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Author Commented:
Hi ecarbone ,

Thanks for make me understand logic of code. :)

I am using versoin 9.2

Again thank you so much.. :)

@James : Regarding FormatDate yeah It might be custome function in it. Actually I am  beginner in crystal reporting.

Thanks
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Commented:
Use in the textbox that the want the answer in.

="IIF (UserId = "", "", "From Date: " & Fomat(FromDate, "MM/dd/yyyy") & " To Date: " &  Fomat(ToDate, "MM/dd/yyyy") )
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