求救，这是怎么回事。

Question

procedure TForm5.DBLookupComboBox1Click(Sender: TObject);
begin
Table1.DatabaseName:='Chuang';
Table1.TableName:='studentscore.db';
Table1.Active:=true;
table1.Filtered:=true;
table1.Filter:='Classname='+QUOTEDSTR(DBLookupComboBox1.Text);
datasource3.DataSet:=Table1;
DBGrid1.DataSource:=dataSource3;
DBNavigator1.DataSource:=dataSource3;
end;
为什么运行后提示Classname字段没找到。我该怎么做呀？

Answer 1

你的table中有没有这个字段呀？

Answer 2

table1.Filtered:=False;
table1.Filter:='Classname='+QUOTEDSTR(DBLookupComboBox1.Text);
table1.Filtered:=True;