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Navigation: Code Documentation > RSCommon > FilerHelper > Classes > TReaderHelper > Methods

TReaderHelper.ReadRootPersistent(TPersistent) Method

Reads the TPersistent object specified by Instance from a stream as the root object

Warning
Do not use this method when you are trying to write a TPersistent object out as part of another component. This method is intended for when you want to save and load the Instance object as the top-level object of a stream. For example, as a SaveToStream/LoadFromStream method pair for the Instance

Namespace: FilerHelper

Parameters

Instance

Type: TPersistent

Delphi

procedure TMyPersistent.LoadFromStream(const Stream: TStream);
var
   Reader: TReader;
begin
   Reader := TReader.Create(Stream, 4096);
   try
     Reader.ReadRootPersistent(Self);
   finally
     Reader.Free;
   end;
end;

procedure TMyPersistent.SaveToStream(const Stream: TStream);
var
   Writer: TWriter;
begin
   Writer := TWriter.Create(Stream, 4096);
   try
     Writer.WriteRootPersistent(Self);
   finally
     Writer.Free;
   end;
end;

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Reference