Solved

Delphi1 DBGRID-Running Totals

Posted on 1999-01-06
1
242 Views
Last Modified: 2010-08-05
I'm using Delphi1 and have a DBgrid with cols 1 thru 7.  Data Entry is allowed in cols 2 thru 7.  I would like to generate totals for cols 2 thru 7 as data is entered into a cell.  Ideally, the totals would be displayed in a second grid.

Example code is very much appreciated.

bisrael@lfpress.com
0
Comment
Question by:bisrael
[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
1 Comment
 
LVL 8

Accepted Solution

by:
ZifNab earned 100 total points
ID: 1354946
Bisrael,

do you need to display it into a second dbgrid or stringgrid?

what you can do :

use a calculated field, which just sums up the columns you need and display this calculated field into the second dbgrid.

after every event (recordchange, insert, etc) calculate the sum of the columns and add these to a grid.


I guess you mean one, so I give you some source for that :

I've added in the fieldseditor of table1 all the fields + a calculated field

Ive added two grids and in one grid i only show the calculated field (columns property) I don't know anymore if this is available in D1. If not, then you've to make two tables pointing to the same datatable and then through the fieldseditor only show the calc field.

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  Db, DBTables, Grids, DBGrids;

type
  TForm1 = class(TForm)
    Table1: TTable;
    Table1SpeciesNo: TFloatField;
    Table1Category: TStringField;
    Table1Common_Name: TStringField;
    Table1SpeciesName: TStringField;
    Table1Lengthcm: TFloatField;
    Table1Length_In: TFloatField;
    Table1Notes: TMemoField;
    Table1Graphic: TGraphicField;
    Table1calc: TCurrencyField;
    DataSource1: TDataSource;
    DBGrid1: TDBGrid;
    DBGrid2: TDBGrid;
    procedure Table1CalcFields(DataSet: TDataSet);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.DFM}

procedure TForm1.Table1CalcFields(DataSet: TDataSet);
begin
 dataset.FieldByName('Calc').AsFloat :=
  dataset.FieldByName('Species No').AsInteger *
  dataset.FieldByName('Length_In').AsFloat
end;

end.

Regards, Zif.

0

Featured Post

Industry Leaders: 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

Suggested Solutions

Title # Comments Views Activity
I want to use librsync in my Delphi backup application. 3 83
Delphi problems to abort a printjob 9 48
IP without any Dots 1 98
Automatic field translation delphi 10.2 6 45
A lot of questions regard threads in Delphi.   One of the more specific questions is how to show progress of the thread.   Updating a progressbar from inside a thread is a mistake. A solution to this would be to send a synchronized message to the…
The uses clause is one of those things that just tends to grow and grow. Most of the time this is in the main form, as it's from this form that all others are called. If you have a big application (including many forms), the uses clause in the in…
I've attached the XLSM Excel spreadsheet I used in the video and also text files containing the macros used below. https://filedb.experts-exchange.com/incoming/2017/03_w12/1151775/Permutations.txt https://filedb.experts-exchange.com/incoming/201…

737 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