I have a table called Artist
which currently contains four records and a TSQLQuery
that contains the following statement:
SELECT name
FROM Artist
The table Artist also contains the following records:
id name
1 Artist 1
2 Artist 2
3 Artist 3
4 Artist 4
Current method of record retrieval:
Query1.Open;
for i := 0 to qArtist.FieldCount -1 do
with cbArtist.ListBox.ListItems[i] do
Text := qArtist.Fields[i].AsString;
Previous method of record retrieval:
Data bind Query1
to ComboBox1
.
With the "previous" method, ComboBox1
would display all the expected records from the Artist
table. However, when I try to use "current" method Query1
is only selecting the very first record from the Artist
table despite there being three other existing values. I have tried the "current" method across other queries and they also returned only the first value of the table.
The reason I am going for this new approach is because I feel that I am very limited in what I can do if I continue to the "previous" / data bind method, but that is besides the point.
So how can I fix this problem? i.e. the problem of the query only selecting the very first record from the table.
You must use the Eof
and Next
methods to iterate over the records.
Query1.Open;
while not Query1.eof do
begin
cbArtist.Items.Add(Query1.FieldByName('Artist').AsString);
Query1.Next;
end;