How to Insert File’s Content to a Memo

Author: admin | Category: Files

 
// This is how we can insert contents of a files to a TMemo
// Using TMemoryStream to load the file's data and then put it to a Memo
 
unit Unit1;
 
interface
 
uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls;
 
type
  TForm1 = class(TForm)
    Button1: TButton;
    Memo1: TMemo;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;
 
var
  Form1: TForm1;
 
implementation
 
{$R *.dfm}
 
procedure TForm1.Button1Click(Sender: TObject);
var
  TheMStream : TMemoryStream;
  Zero : char;
begin
  TheMStream := TMemoryStream.Create;
  TheMStream.LoadFromFile('C:\AUTOEXEC.BAT');
  TheMStream.Seek(0, soFromEnd);
  //Null terminate the buffer!
  Zero := #0;
  TheMStream.Write(Zero, 1);
  TheMStream.Seek(0, soFromBeginning);
  Memo1.SetSelTextBuf(TheMStream.Memory);
  TheMStream.Free;
end;
 
end.

Tags: Files, Memo, MemoryStream