我有一些问题。我无法通过以下代码正确重新定义变量。如何重新定义一个TStringList类型变量
UnitObj.prjOne:=ReturnRightList(0);
for j:=0 to UnitObj.prjOne.Count-1 do
str:=UnitObj.prjOne.ValueFromIndex[j];//here i get for example '32'
UnitObj.prjTwo:=ReturnRightList(1);
for j:=0 to UnitObj.prjTwo.Count-1 do
str1:=UnitObj.prjTwo.ValueFromIndex[j];//here i get for example '40'
for j:=0 to UnitObj.prjOne.Count-1 do
str4:=UnitObj.prjOne.ValueFromIndex[j]; // WHY HERE I GET '42' instead of '32'
UnitObj.prjThird:=ReturnRightList(2);
for j:=0 to UnitObj.prjThird.Count-1 do
str2:=UnitObj.prjThird.ValueFromIndex[j];//here i get for example '42'
procedure TfrmLogin.FormCreate(Sender: TObject);
begin
roleList:=TStringList.Create;
end;
function TfrmLogin.ReturnRightList(bPos:integer):TStringList;
var sqlString:string;
begin
roleList.Clear();
case bPos of
0:sqlString0;//some sql queries
1:sqlString1;
2:sqlString2;
end;
SQLQueryPrjRight.Close;
SQLQueryPrjRight.SQL.Strings[5]:=sqlString;
SQLQueryPrjRight.ParamByName('ID').Value:=uInfo.ID;
SQLQueryPrjRight.Open;
while not SQLQueryPrjRight.EOF do
begin
roleList.Add(IntToStr(SQLQueryPrjRight.FieldByName('pID').AsInteger));
SQLQueryPrjRight.Next;
end;
Result:=roleList;
end;
在函数ReturnRightList我填写一个TStringList roleList,它分配给prjOne,prjTwo,prjThird。但是在这之后,我得到了三个相同内容的TStringLists。为什么会发生以及如何解决?谢谢
rolelList应该是一个由3个TStringLists组成的数组。修改代码以创建roleList [0],roleList [1],roleList [2]并更改代码以每次处理相应的TStringList。 – Scooter