怎样保存一个Idataobject对象到文件中，

Question

如题，最好能给出程序，谢谢各位高手大哥

Answer 1

用流来处理；
This example shows how to use the built-in component streaming support to convert any component into a string and convert that string back into a component.function ComponentToString(Component: TComponent): string;var
  BinStream:TMemoryStream;
  StrStream: TStringStream;
  s: string;
begin
  BinStream := TMemoryStream.Create;
  try
    StrStream := TStringStream.Create(s);
    try
      BinStream.WriteComponent(Component);
      BinStream.Seek(0, soFromBeginning);
      ObjectBinaryToText(BinStream, StrStream);
      StrStream.Seek(0, soFromBeginning);
      Result:= StrStream.DataString;
    finally
      StrStream.Free;    end;
  finally
    BinStream.Free
  end;
end;function StringToComponent(Value: string): TComponent;
var
  StrStream:TStringStream;
  BinStream: TMemoryStream;
begin
  StrStream := TStringStream.Create(Value);
  try
    BinStream := TMemoryStream.Create;
    try
      ObjectTextToBinary(StrStream, BinStream);
      BinStream.Seek(0, soFromBeginning);
      Result := BinStream.ReadComponent(nil);    finally
      BinStream.Free;
    end;
  finally
    StrStream.Free;
  end;
end;