Stream.CopyTo Method (Stream)
Reads the bytes from the current stream and writes them to another stream.
Namespace: System.IO
Assembly: mscorlib (in mscorlib.dll)
Parameters
- destination
- Type: System.IO.Stream
The stream to which the contents of the current stream will be copied.
| Exception | Condition |
|---|---|
| ArgumentNullException | destination is null. |
| NotSupportedException | The current stream does not support reading. -or- destination does not support writing. |
| ObjectDisposedException | Either the current stream or destination were closed before the CopyTo method was called. |
| IOException | An I/O error occurred. |
The following example copies the contents of a FileStream to a MemoryStream.
// Create the streams. MemoryStream destination = new MemoryStream(); using (FileStream source = File.Open(@"c:\temp\data.dat", FileMode.Open)) { Console.WriteLine("Source length: {0}", source.Length.ToString()); // Copy source to destination. source.CopyTo(destination); } Console.WriteLine("Destination length: {0}", destination.Length.ToString());
Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
