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Class UnifiedFileStream

System.IO.Stream implementation for file streams returned by the UnifiedFile implemetation. All operations are executed on a wrapped inner stream.

Inheritance
System.Object
System.MarshalByRefObject
System.IO.Stream
UnifiedFileStream
CheckedOutFileStream
Implements
System.IDisposable
Inherited Members
System.IO.Stream.Null
System.IO.Stream.CopyToAsync(System.IO.Stream)
System.IO.Stream.CopyToAsync(System.IO.Stream, System.Int32)
System.IO.Stream.CopyToAsync(System.IO.Stream, System.Int32, System.Threading.CancellationToken)
System.IO.Stream.CopyTo(System.IO.Stream)
System.IO.Stream.CopyTo(System.IO.Stream, System.Int32)
System.IO.Stream.Dispose()
System.IO.Stream.Dispose(System.Boolean)
System.IO.Stream.FlushAsync()
System.IO.Stream.FlushAsync(System.Threading.CancellationToken)
System.IO.Stream.CreateWaitHandle()
System.IO.Stream.BeginRead(System.Byte[], System.Int32, System.Int32, System.AsyncCallback, System.Object)
System.IO.Stream.EndRead(System.IAsyncResult)
System.IO.Stream.ReadAsync(System.Byte[], System.Int32, System.Int32)
System.IO.Stream.ReadAsync(System.Byte[], System.Int32, System.Int32, System.Threading.CancellationToken)
System.IO.Stream.BeginWrite(System.Byte[], System.Int32, System.Int32, System.AsyncCallback, System.Object)
System.IO.Stream.EndWrite(System.IAsyncResult)
System.IO.Stream.WriteAsync(System.Byte[], System.Int32, System.Int32)
System.IO.Stream.WriteAsync(System.Byte[], System.Int32, System.Int32, System.Threading.CancellationToken)
System.IO.Stream.WriteByte(System.Byte)
System.IO.Stream.Synchronized(System.IO.Stream)
System.IO.Stream.ObjectInvariant()
System.IO.Stream.CanTimeout
System.IO.Stream.ReadTimeout
System.IO.Stream.WriteTimeout
System.MarshalByRefObject.MemberwiseClone(System.Boolean)
System.MarshalByRefObject.GetLifetimeService()
System.MarshalByRefObject.InitializeLifetimeService()
System.MarshalByRefObject.CreateObjRef(System.Type)
System.Object.ToString()
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.ReferenceEquals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
Namespace: EPiServer.Web.Hosting
Assembly: EPiServer.dll
Version: 8.11.0
Syntax
public class UnifiedFileStream : Stream, IDisposable

Properties

CanRead

Gets a value indicating whether the current stream supports reading.

Declaration
public override bool CanRead { get; }
Property Value
Type Description
System.Boolean
Overrides
System.IO.Stream.CanRead

CanSeek

Gets a value indicating whether the current stream supports seeking.

Declaration
public override bool CanSeek { get; }
Property Value
Type Description
System.Boolean
Overrides
System.IO.Stream.CanSeek

CanWrite

Gets a value indicating whether the current stream supports writing.

Declaration
public override bool CanWrite { get; }
Property Value
Type Description
System.Boolean
Overrides
System.IO.Stream.CanWrite

Length

Gets the length in bytes of the stream.

Declaration
public override long Length { get; }
Property Value
Type Description
System.Int64
Overrides
System.IO.Stream.Length
Exceptions
Type Condition
System.NotSupportedException

A class derived from Stream does not support seeking.

System.ObjectDisposedException

Methods were called after the stream was closed.

Position

Gets or sets the position within the current stream.

Declaration
public override long Position { get; set; }
Property Value
Type Description
System.Int64
Overrides
System.IO.Stream.Position
Exceptions
Type Condition
System.IO.IOException

An I/O error occurs.

System.NotSupportedException

The stream does not support seeking.

System.ObjectDisposedException

Methods were called after the stream was closed.

Methods

Close()

Closes the current stream and releases any resources (such as sockets and file handles) associated with the current stream. Raises the EPiServer.Web.Hosting.UnifiedFile.OnFileChanged(EPiServer.Web.Hosting.UnifiedFileStream,EPiServer.Web.Hosting.UnifiedVirtualPathEventArgs) for non-empty streams.

Declaration
public override void Close()
Overrides
System.IO.Stream.Close()

Flush()

Clears all buffers for this stream and causes any buffered data to be written to the underlying device.

Declaration
public override void Flush()
Overrides
System.IO.Stream.Flush()
Exceptions
Type Condition
System.IO.IOException

An I/O error occurs.

Read(Byte[], Int32, Int32)

Reads a sequence of bytes from the current stream and advances the position within the stream by the number of bytes read.

Declaration
public override int Read(byte[] buffer, int offset, int count)
Parameters
Type Name Description
System.Byte[] buffer

An array of bytes. When this method returns, the buffer contains the specified byte array with the values between offset and (offset + count - 1) replaced by the bytes read from the current source.
System.Int32 offset

The zero-based byte offset in buffer at which to begin storing the data read from the current stream.
System.Int32 count

The maximum number of bytes to be read from the current stream.
Returns
Type Description
System.Int32

The total number of bytes read into the buffer. This can be less than the number of bytes requested if that many bytes are not currently available, or zero (0) if the end of the stream has been reached.
Overrides
System.IO.Stream.Read(System.Byte[], System.Int32, System.Int32)
Exceptions
Type Condition
System.ArgumentException

The sum of offset and count is larger than the buffer length.

System.ObjectDisposedException

Methods were called after the stream was closed.

System.NotSupportedException

The stream does not support reading.

System.ArgumentNullException

buffer is null.

System.IO.IOException

An I/O error occurs.

System.ArgumentOutOfRangeException

offset or count is negative.

ReadByte()

Reads a byte from the stream and advances the position within the stream by one byte, or returns -1 if at the end of the stream.

Declaration
public override int ReadByte()
Returns
Type Description
System.Int32

The unsigned byte cast to an Int32, or -1 if at the end of the stream.
Overrides
System.IO.Stream.ReadByte()
Exceptions
Type Condition
System.NotSupportedException

The stream does not support reading.

System.ObjectDisposedException

Methods were called after the stream was closed.

Seek(Int64, SeekOrigin)

Sets the position within the current stream.

Declaration
public override long Seek(long offset, SeekOrigin origin)
Parameters
Type Name Description
System.Int64 offset

A byte offset relative to the origin parameter.
System.IO.SeekOrigin origin

A value of type System.IO.SeekOrigin indicating the reference point used to obtain the new position.
Returns
Type Description
System.Int64

The new position within the current stream.
Overrides
System.IO.Stream.Seek(System.Int64, System.IO.SeekOrigin)
Exceptions
Type Condition
System.IO.IOException

An I/O error occurs.

System.NotSupportedException

The stream does not support seeking, such as if the stream is constructed from a pipe or console output.

System.ObjectDisposedException

Methods were called after the stream was closed.

SetLength(Int64)

Sets the length of the current stream.

Declaration
public override void SetLength(long value)
Parameters
Type Name Description
System.Int64 value

The desired length of the current stream in bytes.
Overrides
System.IO.Stream.SetLength(System.Int64)
Exceptions
Type Condition
System.NotSupportedException

The stream does not support both writing and seeking, such as if the stream is constructed from a pipe or console output.

System.IO.IOException

An I/O error occurs.

System.ObjectDisposedException

Methods were called after the stream was closed.

Write(Byte[], Int32, Int32)

Writes a sequence of bytes to the current stream and advances the current position within this stream by the number of bytes written.

Declaration
public override void Write(byte[] buffer, int offset, int count)
Parameters
Type Name Description
System.Byte[] buffer

An array of bytes. This method copies count bytes from buffer to the current stream.
System.Int32 offset

The zero-based byte offset in buffer at which to begin copying bytes to the current stream.
System.Int32 count

The number of bytes to be written to the current stream.
Overrides
System.IO.Stream.Write(System.Byte[], System.Int32, System.Int32)
Exceptions
Type Condition
System.IO.IOException

An I/O error occurs.

System.NotSupportedException

The stream does not support writing.

System.ObjectDisposedException

Methods were called after the stream was closed.

System.ArgumentNullException

buffer is null.

System.ArgumentException

The sum of offset and count is greater than the buffer length.

System.ArgumentOutOfRangeException

offset or count is negative.

Implements

System.IDisposable

Extension Methods