Delphi7.0实现添加记录的“携带”实现

function TForm1.MyRecordScatTo(DataSet0:TDataSet;var MyDynamic_Record0:Variant):boolean; //正确
返回TRUE,否则为FALSE
//功能:读取(当前记录)字段值存入动态数组中
var i:integer;
begin
try
i:=DataSet0.FieldCount; //取字段数
MyDynamic_Record0:=VarArrayCreate([0,i],varVariant); //MyVariant
if (not DataSet0.Active) //or(DataSet0.eof)
then begin
MessageBeep(MB_OK);
MessageDlg('当前为空记录，无法使用"携带"！',mtError, [mbOk], 0);
Result:=false;
Exit;
end;
with DataSet0 do //DBGrid0
begin
for i:=0 to FieldCount-1 do
begin
if Fields[i].DataType<>ftMemo //非"备注"型数据
then MyDynamic_Record0[i]:=Fields[i].Value;
end; //for i:
end;
Result:=true;
except
Result:=false
end //try
end; // MyRecordScatTo

function TForm1.MyRecordGatherFrom(DataSet0:TDataSet;var MyDynamic_Record0:Variant):boolean; //
正确返回TRUE,否则为FALSE
//功能:从动态数组中获取相应值,来更改(当前记录)字段值
var i:integer;
begin
Result:=true;
with DataSet0 do //
begin
try
for i:=0 to FieldCount-1 do
begin //Edit;
if (Fields[i].DataType<>ftMemo) //非"备注"型数据
then Fields[i].Value:=MyDynamic_Record0[i];
end; //for i
except
Result:=false;
end //try
end;
end; // MyRecordGatherFrom

procedure TForm1.My_TablePostError(DataSet: TDataSet; E: EDatabaseError;
var Action: TDataAction;sFieldName:string);
//功能:保存时数据错误信息捕捉
var sMes:string;
begin
MessageBeep(0);
//以下捕捉"错误信息"
sMes:='当前记录非法！更正后再保存。';
if Pos(UpperCase('key violation'),UpperCase(e.Message))<>0
then sMes:='"'+sFieldName+'"内容重复，请更改后再保存！';
if Pos(UpperCase('must have a value'),UpperCase(e.Message))<>0
then sMes:='当前栏目必须输入值！';// '"'+sFieldName+'"字段必须输入值！';
sMes:=sMes+Chr(13)+Chr(10)+'(Esc键取消操作)';
MessageDlg(sMes,mtError, [mbOk], 0);
Action:=daAbort; //放弃编辑且不显示错误信息
end; //调用通用表数据处理模块