Solved

I need help with the Excel Range collection and cell formatting using Automation.

Posted on 2006-07-04
7
273 Views
Last Modified: 2012-05-05
Hi guys,

Question 1
I am trying to import an excel price list of books into my Delphi Application, the excel file is using custom formatting on each cell containing an ISBN number the formatting used is: (0000000000). In excel it displays the correct results ie: 0072226803.

When I access the cell using
Excel.Cells.Item[1,1]

it returns: 72226803, this throws the validation out because an ISBN number must be 10 characters in length and the first two zeros have gone AWOL.
How would I access the cells value and preserve the leading zeros? Keep in mind that the Spreadsheets differ from supplier to supplier so their ISBN columns may have different formatting, ultimately I want to access the value as its seen on the spreadsheet...

Question 2
Most of the documentation shows the Cells collection being accessed as follows:
Cells(rwIndex, colIndex).Value

My problem is that with the Excel_TLB, the only way to access an individual cell by row, col is with the Item property and this returns an OleVariant which pretty much only contains the cells content. How would I access other properties for an individual cell?



Any help on this will be greatly appreciated!
0
Comment
Question by:scandiumza
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 3
7 Comments
 
LVL 3

Expert Comment

by:Ubethatway
ID: 17035916
Hi,

Would a suitable solution be to simply pad the numbers with 0's up to 10 digits? e.g.:

function pad(X: String): String;
  padded := X;
 
  while (length(padded) <> 10) do
    padded := '0'+padded;

  result := padded;
end;

Remembering to convert the value to a string before passing it to the function.

Hope that helps, Mark.
0
 

Author Comment

by:scandiumza
ID: 17035951
Hey Mark,

I was thinking of padding it but the problem comes in with the validation. If, through human error, the ISBN numbers in the pricelist are the incorrect length and they get padded, they will be passed as valid when tested. These invalid entries should not appear in the application.

Thanks for the suggestion though!
0
 
LVL 10

Accepted Solution

by:
atul_parmar earned 250 total points
ID: 17035962
Hi, try this out.

var
  s : string;
begin
  if x = Unassigned then
    x := CreateOleObject('Excel.Application');
  x.visible := True;
  x.WorkBooks.Add;
  x.WorkBooks[1].WorkSheets[1].Cells[1,1] := 12345;
  x.WorkBooks[1].WorkSheets[1].Cells[1,1].NumberFormat := '0000000000';
  s := x.WorkBooks[1].WorkSheets[1].Cells[1,1].Text;
  ShowMessage(s);
end;
0
Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 10

Expert Comment

by:atul_parmar
ID: 17035999
var
  x : olevariant;  >>> Missed out
After you finish working with the object free it by
x := unassigned;

In your case, all you have to do is to use the olevariant or cast the object to IDispatch.
0
 

Author Comment

by:scandiumza
ID: 17036022
Now that works precisely how I need it to work!

Any chance of this working with the Excel Type Library?

Thanks atul!
0
 
LVL 10

Expert Comment

by:atul_parmar
ID: 17036055
Yep, As I said previously you will need to cast it to IDispatch

e.g.
var
x : olevariant;
myexcel : texcelapplication;
begin
  x := IDispatch(myexcel.defaultinterface);
  x.visible := True;
end;
0
 

Author Comment

by:scandiumza
ID: 17036067
Oh okay, I see now. Sorry, not too clued up with COM programming.

Thanks again!
0

Featured Post

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Creating an auto free TStringList The TStringList is a basic and frequently used object in Delphi. On many occasions, you may want to create a temporary list, process some items in the list and be done with the list. In such cases, you have to…
Hello everybody This Article will show you how to validate number with TEdit control, What's the TEdit control? TEdit is a standard Windows edit control on a form, it allows to user to write, read and copy/paste single line of text. Usua…
There are cases when e.g. an IT administrator wants to have full access and view into selected mailboxes on Exchange server, directly from his own email account in Outlook or Outlook Web Access. This proves useful when for example administrator want…
NetCrunch network monitor is a highly extensive platform for network monitoring and alert generation. In this video you'll see a live demo of NetCrunch with most notable features explained in a walk-through manner. You'll also get to know the philos…

728 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question