| Description |
A buffered stream supports direct access to sections of the stream. You might, for example, want to treat the stream as a set of records, and then Seek to a certain record in order to update the values.
You can seek to a specified byte Offset from one of the following Origin values :
| SeekOrigin.Begin | Byte 0 of the stream |
| SeekOrigin.Current | The current stream position |
| SeekOrigin.End | After the final byte of the stream |
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| | References | SeekOrigin
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| Microsoft MSDN Links |
System.IO
System.IO.BufferedStream
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| A simple example |
program Project1;
{$APPTYPE CONSOLE}
uses
System.IO;
var
Memory : System.IO.MemoryStream;
Stream : System.IO.BufferedStream;
ByteAsInt : Integer;
begin
// Create our memory stream
Memory := System.IO.MemoryStream.Create;
// Create out BufferedStream to access this memory stream
Stream := System.IO.BufferedStream.Create(Memory);
// Write to the memory stream using the BufferedStream
Stream.WriteByte(1);
Stream.WriteByte(2);
Stream.WriteByte(3);
Stream.WriteByte(4);
Stream.WriteByte(5);
// Now seek to index 2 in the stream
Stream.Seek(2, SeekOrigin.Begin);
// Now display the contents
ByteAsInt := Stream.ReadByte;
while ByteAsInt > 0 do
begin
Console.WriteLine(ByteAsInt.ToString);
ByteAsInt := Stream.ReadByte;
end;
// Close the stream
Stream.Close;
Console.Readline;
end.
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