Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

DBGrid(c++)

Posted on 2000-04-08
6
Medium Priority
?
889 Views
Last Modified: 2006-11-17
Hi,(this is BBuilder c++ question)

How can I read data in containd in DBGrid ?
I wont to read for example all values which are in  field 2

I make it works with dbgrid navigator but that's to messy
I also have found  following line of code but it is for Delphi and for some reason it don't work

DBGrid1.Columns[4].Field.AsString
I try to do following
DBGrid1->Columns[2]->Field->AsString;
but it reports error.

This is how i made it with db navigator

for (int z=0;z<RecordCount;z++) {
   zbir = zbir +Form1->DBGrid1->Fields[2]->AsInteger;//I need to accumulate all values containd in all cells inside field[2]
      Form1->DBNavigator1->BtnClick(nbNext);//and move to next cell
  }

How can i acces this data's not using dbnavigator



0
Comment
Question by:xtvca
  • 4
  • 2
6 Comments
 
LVL 9

Expert Comment

by:ITugay
ID: 2695973
for (int z=0;z<RecordCount;z++)???
whats are .... :o)

You do not need to manipulate with DBGrig, just do it with your DataSet.

Table1 -> first
while Table1 -> EOF do
begin
    SomeValue := Table1->Fields[2]->AsWhatYouWant;
   Table1->Next;
end;

----
Igor
0
 
LVL 9

Expert Comment

by:ITugay
ID: 2695975
typo...
while not Table1-> EOF
0
 

Author Comment

by:xtvca
ID: 2695986
I'm not working with tables but with SQL query's
Thats why i need to read data from DBGrid (or is there is some better solution I wold be happy to hear (i'm still begginer))

Regards
0
Independent Software Vendors: 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 9

Accepted Solution

by:
ITugay earned 76 total points
ID: 2696028
Just change Table1 to Query1 ;)

Now seriously. The code bellow is sample how to extract all fields value from given table.
--------
Query1 is TQuery;
ListBox1 is TListBox it will filled out by Query1.Fields[1] values;
-------

procedure TForm1.SpeedButton1Click(Sender: TObject);
begin
   Listbox1.Clear;  // clear content of ListBox
   Query1.Open;  // open query
   while not Query1.EOF do // do for all records in Query1
   begin
      ListBox1.Items.Add(Query1.Fields[1].AsString); // add first field value to ListBox
      Query1.Next; // goto next record
   end;
   Query1.Close; // close Query
end;

-----

To repeat this sample in your applcation drop TQuery, TListBox, TSpeedButton components on your form and copy/paste xode above to you OnButtonClick procedure.

------
Igor.

PS: it's Delphi, OK?
0
 

Author Comment

by:xtvca
ID: 2696141
GREAT IT WORKS

Line is :
ListBox1->Items->Add(Query1->Fields->Fields[2]->AsString); // add first field value to ListBox

THANKS
&REGARDS

0
 
LVL 9

Expert Comment

by:ITugay
ID: 2696148
;)
0

Featured Post

Concerto's Cloud Advisory Services

Want to avoid the missteps to gaining all the benefits of the cloud? Learn more about the different assessment options from our Cloud Advisory team.

Question has a verified solution.

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

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…
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…
This course is ideal for IT System Administrators working with VMware vSphere and its associated products in their company infrastructure. This course teaches you how to install and maintain this virtualization technology to store data, prevent vuln…
Loops Section Overview

927 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