[DUG] XML data to image problem

[Robert Martin]

Hi

I am getting image data from an XML file.  The author has not provided 
information as to encoding or file type but I am assuming base64 and 
Jpg.  I have the following code which does produce a file but it appears 
corrupt.

                 if (aNode <> nil)
                         and (ANode.NodeValue <> Null) then begin
                     //Save file
                     FileName := TempDir + 'Preview.jpg';
                     DeleteFile(FileName);

                     FileStream := TFileStream.Create(FileName, fmCreate);
                     try
                         //Assume node is Base64 encoded binary data
                         base64Decoder := TIdDecoderMIME.Create(Self);
                         try
                             ImageData := 
base64Decoder.DecodeString(ANode.NodeValue)
                         finally
                             base64Decoder.Free;
                         end;

                         FileStream.Position := 0;
                         FileStream.Write(Pointer(ImageData)^, 
Length(ImageData));

                     finally
                         FileStream.Free;
                     end;
                 end


I have tried changing the file extension but it does not open.  I have 
also tried no base 64 decode but that also fails to produce a valid 
file.  Can anyone see anything obviously wrong before I go back to the 
source for further information (they are in the UK so its a day turn 
around AND they are really unhelpful).

Thanks
Rob