第一个问题:应当是不可以的,除非你用两个query并设置同步,这样可以通过获取第一个query的指针位置从而定位第二个query的指针。
第二个问题:应当可以。参照记录类型的定义,如:type
slonday = record
day: cardinal;
Oprice: cardinal;
Cprice: cardinal;
Hprice: cardinal;
Lprice: cardinal;
Damout: cardinal;
Dvolmn: cardinal;
reserved: Array[0..5] of smallint;
end;Vsday : Slonday;
这样定义之后,还可以实现把数据写入到文件中去
第二个问题:应当可以。参照记录类型的定义,如:type
slonday = record
day: cardinal;
Oprice: cardinal;
Cprice: cardinal;
Hprice: cardinal;
Lprice: cardinal;
Damout: cardinal;
Dvolmn: cardinal;
reserved: Array[0..5] of smallint;
end;Vsday : Slonday;
这样定义之后,还可以实现把数据写入到文件中去
大概我可以明天﹐copy一份粘貼上來
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{************************************************
// procedure AppendCurrent
//
// Written By: Steve Zimmelman
// 6/4/96
//
// Version: Delphi 2.0
//
// Will append an exact copy of the current
// record of the dataset that is passed into
// the procedure and will return the dataset
// in edit state with the record pointer on
// the currently appended record.
************************************************}
Procedure AppendCurrent(Dataset:Tdataset);
Var
aField : Variant ;
i : Integer ;
Begin
//Create a variant Array
aField := VarArrayCreate(
[0,DataSet.Fieldcount-1],
VarVariant);
// read values into the array
For i := 0 to (DataSet.Fieldcount-1) Do Begin
aField[i] := DataSet.fields[i].Value ;
End;
DataSet.Append ;
// Put array values into new the record
For i := 0 to (DataSet.Fieldcount-1) Do Begin
DataSet.fields[i].Value := aField[i] ;
End;
End;