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...locate on a non-indexed field in a TTable?
Autor: Damian Gorski
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Tip Rating (6):  
     


{The following function can be added to your to your unit and called as follows:}

Locate(Table1, Table1LName, 'Beman');

{Table1 is your table component, Table1LName is TField you've add with the fields
editor (double click on the table component) and 'Beman' is the name you want to find.}

{Locate will find SValue in a non-indexed table}

function Locate(const oTable: TTable; const oField: TField;
  const sValue: string): Boolean;
var

  
bmPos: TBookMark;
  bFound: Boolean;
begin
  
Locate := False;
  bFound := False;
  if not oTable.Active then Exit;
  if oTable.FieldDefs.IndexOf(oField.FieldName) < 0 then Exit;
  bmPos := oTable.GetBookMark;
  with oTable do
  begin
    
DisableControls;
    First;
    while not EOF do
      if 
oField.AsString = sValue then
      begin
        
Locate := True;
        bFound := True;
        Break;
      end
    else
      
Next;
  end;
  if (not bFound) then
    
oTable.GotoBookMark(bmPos);
  oTable.FreeBookMark(bmPos);
  oTable.EnableControls;
end;

 

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