Copies bytes from the current buffered IsolatedStorageFileStream object to an array.
Assembly: mscorlib (in mscorlib.dll)
- Type: System.Byte
The buffer to read.
- Type: System.Int32
The offset in the buffer at which to begin writing.
- Type: System.Int32
The maximum number of bytes to read.
Return ValueType: 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 if the end of the stream is reached.
The isolated store has been removed.
Isolated storage is disabled.
offset and count describe an invalid range in buffer.
buffer is null.
offset or count is negative.
The stream is closed or an internal error has occurred.
The stream has been disposed.
The buffer parameter can be an instance of the Buffer class, or an array of one of the following types: Byte, SByte, Char, Int16, Int32, Int64, UInt16, UInt32, UInt64, Single, or Double. The offset parameter gives the offset of the byte in buffer at which to begin writing (index in the buffer), and the count parameter gives the maximum number of bytes that will be read from this stream. The returned value is the actual number of bytes read, or zero if the end of the stream is reached. If the read operation is successful, the current position of the stream is advanced by the number of bytes read. If an exception occurs, the current position of the stream is unchanged.
The method treats the buffer parameter as a block of bytes, regardless of its actual type. Likewise, the offset and count parameters are always specified in bytes. For buffer parameters other than byte arrays, this means that an element index must be multiplied by the element size in bytes to form a correct value for offset or count.
The method will return zero only if the end of the stream is reached. In all other cases, always reads at least one byte from the stream before returning. If no data is available from the IsolatedStorageFileStream object upon a call to , the method will block until at least one byte of data can be returned.
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.