Firebird数据库连接不上

[shijies]

SQLConnection property required for this operation.



procedure TForm1.FormCreate(Sender: TObject);
begin
if SQLConnection1.Connected=true then
SQLConnection1.Connected:=false;
SQLConnection1.Params.Clear;
SQLConnection1.Params.Values['user_name']:='sysdba';
SQLConnection1.Params.values['password']:='masterkey';
sqlConnection1.Params.Values['SQLDialect']:='3';
SQLConnection1.Params.Values['database']:=extractfilepath(paramstr(0))+'d7\test.fdb';
SQLConnection1.Connected:=true;
end;

[shijies]

向窗体中放入了SQLQuery和SQLConnection组件,SQLConnection组件属性如下：

DriverName=InterBase;
VendorLib=fbembed.dll;
LibraryName=dbexpint.dll;

在窗体的FormCreate事件中加入了代码：
procedure TForm1.FormCreate(Sender: TObject);
begin
if SQLConnection1.Connected=true then
SQLConnection1.Connected:=false;
SQLConnection1.Params.Clear;
SQLConnection1.Params.Values['user_name']:='sysdba';
SQLConnection1.Params.values['password']:='masterkey';
sqlConnection1.Params.Values['SQLDialect']:='3';
SQLConnection1.Params.Values['database']:=extractfilepath(paramstr(0))+'d7\test.fdb';
SQLConnection1.Connected:=true;
end;
当向Firebird数据库插入数据时，连不上Firebird数据库，出现对话框，显示：SQLConnection property required for this operation.

[shijies]

问题在于SQLQuery组件的连接属性没有设置

[shijies]

问题在于SQLQuery组件的连接属性没有设置