case只能使用Ordinal类型,如整数,枚举等,字符串在Delphi中不行。
只能这样:
if bitton.caption='增加' then
begin
end
else if bitton.caption='修改' then
begin
end
只能这样:
if bitton.caption='增加' then
begin
end
else if bitton.caption='修改' then
begin
end
1: //增加
0: //修改
end;—————————————————————————————————
MaximStr := '宠辱不惊,看庭前花开花落,去留无意;
毁誉由人,望天上云卷云舒,聚散任风。';
if Not Assigned(I) then
I := TI.Create(Nil);
I.Maxim := MaximStr;
I.Explain := '假如上述代码中出现“OA”等字样,删除它们';
I.Desire := '加不加分随你';
—————————————————————————————————
源码!
var
f1,f2:string;
begin
query_data.Close;
query_data.SQL.Clear;
query_data.SQL.Add('select * from data where d_logname=:t1 and d_back=:t2');
query_data.ParamByName('t1').AsString:=login_unit.logname;
query_data.ParamByName('t2').AsString:=listbox1.Items.Strings[listbox1.itemindex];
query_data.Open;
f1:=query_data.fieldbyname('d_title').AsString;
f2:=query_data.fieldbyname('d_memo').AsString;
e_title.Text:=f1;
memo1.Text:=f2;
bitbtn10.Caption:='修改';
bitbtn11.Enabled:=true;
{ query_data.Close;
query_data.SQL.Clear;
query_data.SQL.Add('select * from data where d_date=:t1');
query_data.ParamByName('t1').AsDate:= now();
query_data.Open;}
end;procedure TFrm_dhcxxt.BitBtn12Click(Sender: TObject);
begin
frm_add.ShowModal;
end;procedure TFrm_dhcxxt.DBGrid1DblClick(Sender: TObject);
begin
// if query1.Close then exit;
Frm_query.ShowModal;
end;procedure TFrm_dhcxxt.BitBtn10Click(Sender: TObject);
var
j1:string;
begin
if bitbtn10.Caption='写好了' then //增加一条记录!
begin
query_data.Close;
query_data.SQL.Clear;
query_data.SQL.Add('insert into data(d_title,d_date,d_memo,d_back,d_logname) values(:t1,:t2,:t3,:t4,:t5)');
query_data.ParamByName('t1').AsString:=trim(e_title.Text);
query_data.ParamByName('t2').AsDatetime:= datetimepicker1.Date;
query_data.ParamByName('t3').AsString:= trim(memo1.Text);
query_data.ParamByName('t4').AsString:= datetostr(datetimepicker1.Date)+' '+trim(e_title.Text);
query_data.ParamByName('t5').AsString:=login_unit.logname;
query_data.execsql;
j1:=datetostr(datetimepicker1.Date)+' '+trim(e_title.Text);
e_title.Text:='';
memo1.Text:='';
listbox1.Clear; //刷新listbox的内容!
query_data.Close;
query_data.SQL.Clear;
query_data.SQL.Add('select * from data where d_logname=:t1');
query_data.ParamByName('t1').AsString:=login_unit.logname;
query_data.Open;
if query_data.RecordCount>0 then
begin
while not query_data.Eof do
begin
listbox1.Items.Add(query_data.fieldbyname('d_back').asstring);
query_data.Next;
end;
end;
end
else if bitbtn10.Caption='修改' then//修改一条记录!
begin
query_data.Close;
query_data.SQL.Clear;
query_data.SQL.Add('update data set d_title=:t1,d_date=:t2,d_memo=:t3,d_back=:t4,d_logname=:t5 where d_logname=:t6 and d_title=:t7');
query_data.ParamByName('t1').AsString:=trim(e_title.Text);
query_data.ParamByName('t2').AsDatetime:= datetimepicker1.Date;
query_data.ParamByName('t3').AsString:= trim(memo1.Text);
query_data.ParamByName('t4').AsString:= datetostr(datetimepicker1.Date)+' '+trim(e_title.Text);
query_data.ParamByName('t5').AsString:=login_unit.logname;
query_data.ParamByName('t6').AsString:=login_unit.logname;
query_data.ParamByName('t7').AsString:=j2;
listbox1.Clear; //刷新listbox的内容!
query_data.Close;
query_data.SQL.Clear;
query_data.SQL.Add('select * from data where d_logname=:t1');
query_data.ParamByName('t1').AsString:=login_unit.logname;
query_data.Open;
if query_data.RecordCount>0 then
begin
while not query_data.Eof do
begin
listbox1.Items.Add(query_data.fieldbyname('d_back').asstring);
query_data.Next;
end;
end;
end;
end;
if bitbtn.caption:='增加' then tmp_int:=1;
.......
之后就可以用
Case tmp_int of
1:
begin
end
else
begin
end;
end;
mycase:integer;
if bitbtn1.caption:='增加' then mycase:=0;
.......
case mycase of
1:
begin
........
end;
else
begin
end;
end;
0: //增加
1: //修改
……
-1: //没有这个按钮
end;
—————————————————————————————————
MaximStr := '宠辱不惊,看庭前花开花落,去留无意;
毁誉由人,望天上云卷云舒,聚散任风。';
if Not Assigned(I) then
I := TI.Create(Nil);
I.Maxim := MaximStr;
I.Explain := '假如上述代码中出现“OA”等字样,删除它们';
I.Desire := '加不加分随你';
—————————————————————————————————