Solved

Converting a string to an Array

Posted on 2000-04-25
7
204 Views
Last Modified: 2010-04-04
I'm Pulling information from a DataBase in the form of a string.  I need to know how to convert the data into an array.

D := Table1.FieldByName ('drives').AsString;

I have an array defined
MyArray : array[0..15] of char;
when I try to assign D to MyArray I keep getting incompatible types
'Array' 'String'  
MyArray := D;

I need to look at the data from the database one Character at a time.
0
Comment
Question by:msmouse
  • 3
  • 2
  • 2
7 Comments
 
LVL 10

Accepted Solution

by:
Lischke earned 50 total points
ID: 2747126
Aside from the possibility to access each character separately by using D[x] you can do:

  PChar(@MayArray[0]) := Table1.FieldByName ('drives').AsString;

or

  Move(D[1], MyArray, Length(D));

Ciao, Mike
0
 
LVL 10

Expert Comment

by:Lischke
ID: 2747134
Sorry, only the second solution works. Casting the array to anything does only produce the well known "left side cannot be assigned to" error.

Ciao, Mike
0
 
LVL 1

Expert Comment

by:msedi
ID: 2747183
Hello,

First, why don't you use a dynamic array. With the array you use, you are always fixed to a specific size. So try
 
  var
    MyArray : array of Char;

instead of your first thing. Then set the length of the array with SetLength(MyArray, e.g. 15). That's the first thing. You can access the array as usual.

After that you can get the value of your database with

var
  D : string;

begin  
  D := Table1.FieldByName      ('drives').AsString;

  if (D <> '') then
  begin
    MyArray[0] := D[1]; // First element in string
  end
  else MyArray := #0;
end;
   
0
Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

 
LVL 10

Expert Comment

by:Lischke
ID: 2747217
Hi msedi,

welcome on E-E :-) I want to let you know that proposing an answer is considered bad behaviour and against the rules here if someone else (in this case me :-)) has already commented to the question. Of course, if you are very sure you have the solution and all other just have given nonsense then proposing an answer is acceptable. But this usually happens very seldom and when using only comments then the questioneer can pick one and promote it to being an answer. Additionally, it happend quite often (also to me) that the proposed answer has been accepted accidently although another one was meant, because the questioneer thought the answer came from the same person as the previous comments.

Thank you and

Ciao, Mike
0
 
LVL 1

Expert Comment

by:msedi
ID: 2747561
Sorry,

I didn't see that.

Greetings, Martin
0
 
LVL 1

Author Comment

by:msmouse
ID: 2750198
msedi,  I tried your way but you get 'dynamic Array' 'char' error.

Lischke  The move function seems to be a step in the right direction, I'm not getting the types error.

0
 
LVL 1

Author Comment

by:msmouse
ID: 2750201
A step in the right direction, Now I just have to work with getting the array to do what I want.

Thanks
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

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

Objective: - This article will help user in how to convert their numeric value become words. How to use 1. You can copy this code in your Unit as function 2. than you can perform your function by type this code The Code   (CODE) The Im…
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…
Here's a very brief overview of the methods PRTG Network Monitor (https://www.paessler.com/prtg) offers for monitoring bandwidth, to help you decide which methods you´d like to investigate in more detail.  The methods are covered in more detail in o…
This video demonstrates how to create an example email signature rule for a department in a company using CodeTwo Exchange Rules. The signature will be inserted beneath users' latest emails in conversations and will be displayed in users' Sent Items…

932 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

Need Help in Real-Time?

Connect with top rated Experts

10 Experts available now in Live!

Get 1:1 Help Now