Solved

Download file to memory?

Posted on 2008-10-23
8
289 Views
Last Modified: 2013-11-23
Hi Experts,
Someone can help me to download a file (any file on webs) to the memory (stream or somthing)?

thanks :)
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Comment
Question by:controlr
  • 4
  • 4
8 Comments
 
LVL 37

Expert Comment

by:Geert Gruwez
ID: 22784458
procedure TForm1.GetFileFromWeb;
var astream: TMemoryStream;
  aFile: string;
begin
  aStream := TMemoryStream.Create;
  try
    idHttp1:=TIdHTTP.Create(self);
    try
      aFile := 'http://www.google.com';
      idHttp1.Get(Site, aStream);
    finally
      idHttp1.Free;
    end;
    // do something with the stream
  finally
    aStream.Free;
  end;
end;  
0
 

Author Comment

by:controlr
ID: 22784903

thats look good
but why i cant load the stream to an Timage?

example:
aFile := 'http://www.makav.co.il/logo.bmp';
  Image1.Picture.Bitmap.LoadFromStream(astream);

thanks for helping
0
 
LVL 37

Expert Comment

by:Geert Gruwez
ID: 22784919
is there a bitmap in the picture before you load it ?

load a bitmap in the picture first with the ide
I can't be anything, like a white bitmap of 1x1 square

then try again
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Author Comment

by:controlr
ID: 22784967
i tried that allready and it does not work :(
0
 
LVL 37

Expert Comment

by:Geert Gruwez
ID: 22784973
does loading the file from the website work ?
0
 

Author Comment

by:controlr
ID: 22784991
i think yes because when i save it to file i see the image.
but i want to save it to stream and then to load it directly to the timage without using the disk
0
 
LVL 37

Accepted Solution

by:
Geert Gruwez earned 500 total points
ID: 22785088
i can't test the Get function here as i am behind a firewall,
i'll test the other stuff

you need to set the stream to the beginning




procedure TForm1.GetFileFromWeb;
var astream: TMemoryStream;
  aFile: string;
begin
  aStream := TMemoryStream.Create;
  try
    idHttp1:=TIdHTTP.Create(self);
    try
      aFile := 'http://www.google.com';
      idHttp1.Get(Site, aStream);
    finally
      idHttp1.Free;
    end;
    aStream.Seek(soFromBeginning, 0);
    Image1.Picture.Bitmap.LoadFromStream(aStream);
  finally
    aStream.Free;
  end;
end;  

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Author Comment

by:controlr
ID: 22785122
thanks a lot man!!!!
its working
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