procedure TDataupdateform.BitBtn1Click(Sender: TObject);
begin
with UpdatedataModule.t_student do
begin
if spinedit1.Text='' then
begin
showmessage('请输入学号:');
spinedit1.SetFocus;
exit;
end;
if not locate('sno',vararrayof([spinedit1.text]),[loPartialKey]) then
begin
showmessage('无此记录,不能修改!');
exit;
end;
edit;
fieldbyname('name').asstring:=edit1.text;
fieldbyname('sno').asstring:=spinedit1.text;
fieldbyname('sex').asstring:=edit3.text;
fieldbyname('age').asstring:=edit4.text;
fieldbyname('entrance').asdatetime:=datetimepicker1.date;
post;
showmessage('修改成功!');
end;
end;
locate('sno',vararrayof([spinedit1.text]),[loPartialKey])
报错“Undeclared identifier: 'LopartialKey'”
begin
with UpdatedataModule.t_student do
begin
if spinedit1.Text='' then
begin
showmessage('请输入学号:');
spinedit1.SetFocus;
exit;
end;
if not locate('sno',vararrayof([spinedit1.text]),[loPartialKey]) then
begin
showmessage('无此记录,不能修改!');
exit;
end;
edit;
fieldbyname('name').asstring:=edit1.text;
fieldbyname('sno').asstring:=spinedit1.text;
fieldbyname('sex').asstring:=edit3.text;
fieldbyname('age').asstring:=edit4.text;
fieldbyname('entrance').asdatetime:=datetimepicker1.date;
post;
showmessage('修改成功!');
end;
end;
locate('sno',vararrayof([spinedit1.text]),[loPartialKey])
报错“Undeclared identifier: 'LopartialKey'”
var
searchpwd : TLocateoptions;
locatesuccess : boolean;
begin
searchpwd := [LopartialKey];
locatesuccess := locate('sno',vararrayof([spinedit1.text]),searchpwd);
unit dataupdateunit;interfaceuses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, Buttons, Spin, ComCtrls,DB;//定义DB.
.
.
.
.var
dataupdateform: Tdataupdateform;
searchpwd:TLocateoptions;
implementationuses UpdatedataModuleunit;{$R *.dfm}procedure Tdataupdateform.BitBtn1Click(Sender: TObject);
begin
with UpdatedataModule.t_student do
begin
if spinedit1.Text='' then
begin
showmessage('请输入学号:');
spinedit1.SetFocus;
exit;
end;
searchpwd:=[LopartialKey];
if not locate('sno',vararrayof([spinedit1.text]),searchpwd) then
begin
showmessage('无此记录,不能修改!');
exit;
end;
edit;
fieldbyname('name').asstring:=edit1.text;
fieldbyname('sno').asstring:=spinedit1.text;
fieldbyname('sex').asstring:=edit3.text;
fieldbyname('age').asstring:=edit4.text;
fieldbyname('entrance').asdatetime:=datetimepicker1.date;
post;
showmessage('修改成功!');
end;
end;