function CreateTableInMemory(const AFieldDefs:TFieldDefs): TDataSet;
var
TempTable:TClientDataSet;
begin
TempTable:=nil;
Result:=nil;
if AFieldDefs<>nil then
begin
try
TempTable:=TClientDataSet.Create(Application);
TempTable.FieldDefs.Assign(AFieldDefs);
TempTable.CreateDataSet;
Result:=(TempTable as TDataSet);
Except
if TempTable<>nil then TempTable.Free;
Result := nil;
raise;
end
end
end;procedure TForm1.Button1Click(Sender: TObject);
var
ADataSet:TDataSet;
begin
ADataSet:=TDataSet.Create(Self);
with ADataSet.FieldDefs do
begin
Add('State', ftBoolean,0,False);
Add('FileName',ftString,30,False);
Add('Description',ftString,30,False);
end; with DataSource1 do
begin
DataSet:=CreateTableInMemory(ADataSet.FieldDefs);
DataSet.Open;
end; ADataSet.Free;
end;
var
TempTable:TClientDataSet;
begin
TempTable:=nil;
Result:=nil;
if AFieldDefs<>nil then
begin
try
TempTable:=TClientDataSet.Create(Application);
TempTable.FieldDefs.Assign(AFieldDefs);
TempTable.CreateDataSet;
Result:=(TempTable as TDataSet);
Except
if TempTable<>nil then TempTable.Free;
Result := nil;
raise;
end
end
end;procedure TForm1.Button1Click(Sender: TObject);
var
ADataSet:TDataSet;
begin
ADataSet:=TDataSet.Create(Self);
with ADataSet.FieldDefs do
begin
Add('State', ftBoolean,0,False);
Add('FileName',ftString,30,False);
Add('Description',ftString,30,False);
end; with DataSource1 do
begin
DataSet:=CreateTableInMemory(ADataSet.FieldDefs);
DataSet.Open;
end; ADataSet.Free;
end;
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