whats new ¦  programming tips ¦  indy articles ¦  intraweb articles ¦  informations ¦  links ¦  interviews
 misc ¦  tutorials ¦  Add&Win Game

Tips (1541)

Database (90)
Files (137)
Forms (107)
Graphic (114)
IDE (21)
Indy (5)
Internet / LAN (130)
IntraWeb (0)
Math (76)
Misc (126)
Multimedia (45)
Objects/
ActiveX (51)

OpenTools API (3)
Printing (35)
Strings (83)
System (266)
VCL (242)

Top15

Tips sort by
component


Search Tip

Add new Tip

Add&Win Game

Advertising

30 Visitors Online


 
...create a Dataset lookup field at runtime?
Autor: invisible
[ Print tip ]  

Tip Rating (17):  
     


// example: create lookup field (string, size: 50) at runtime

with TStringField.Create(YourDataSet) do
begin
   
FieldName := 'FieldName';
   FieldKind := fkLookup;
   DataSet := YourDataSet;
   Name := DataSet.Name + FieldName;
   KeyFields := 'YourKeyFields';
   LookupDataSet := YourLookupDataSet;
   LookupKeyFields := 'YourLookupKeyFields';
   LookupResultField := 'YourLookupResultField';

   FieldDefs.Add(FieldName, ftString, 50, False);
end;


 

Rate this tip:

poor
very good


Copyright © by SwissDelphiCenter.ch
All trademarks are the sole property of their respective owners