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From Db table to listview

Posted on 2004-04-21
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Last Modified: 2010-04-05
i have database table (Firebird) Consist of the following Fields
Emp _table :
Id
name
Salary
Age
   Iwant Code to Select all employee whitch in specific age and Add them To listview whitch is Vsreport view Style
and the columns are Same in database?
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Question by:sraab2004
  • 3
5 Comments
 
LVL 3

Expert Comment

by:MikProg
ID: 10886016
use TQuery descendants to excute 'select * from Emp where age=..'
add Q.Fields.Count-1 columns to you listview
then simply
Q.First;
while not Q.eof do
begin
  with listview.Items.Add, Q.Fields do
  begin
    Caption:=FieldByName('Id').AsString;
    subitems.add(FieldByName('Name').AsString);
    subitems.add(FieldByName('Salary').AsString);
    subitems.add(FieldByName('Age').AsString);
  end;
end;

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LVL 11

Accepted Solution

by:
shaneholmes earned 120 total points
ID: 10888373
sraab2004,

Here is a more descriptive example.... (and MikProg forgot his call to NEXT in his iteration).

Create a Query using parameters (passing it the Age)

Example:

 Query1.Close;
 Query1.SQL.Clear;
 Query1.sql.text:='Select * from Employee where Age=:AAge'
 Query1.parambyname('AAge').asInteger:= 21;
 Query1.Open

Now iterate through the returned set, populating your ListView with the Records...


Query1.First;
while not Query1.eof do
begin
 Item:=   ListView1.Items.Add;
 Item.Caption:= Query1.FieldByName('Id').AsString;
 Item.SubItems.Add(Query1.FieldByName('Name').AsString);
 Item.SubItems.Add(Query1.FieldByName('Salary').AsString);
 Item.SubItems.Add(Query1.FieldByName('Age').AsString);
  end;
 Query1.Next;  //******* this is key - do not forget this
end;


Shane
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LVL 3

Expert Comment

by:MikProg
ID: 10888705
Oooooh! oooooh ! OOOOOOOOOh! I forgot Q.Next! Bye bye my points! AAAAAA! :)
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Author Comment

by:sraab2004
ID: 10906676
query1.next must be inside while loop shane I want to divide the points between shane (20) and mikprog (10) how to do that ?
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LVL 3

Expert Comment

by:MikProg
ID: 10916488
Don't care about points! I'm really loose them.
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