Reads the next character from the current stream and advances the current position of the stream in accordance with the Encoding used and the specific character being read from the stream.
Assemblies: System.IO (in System.IO.dll)
mscorlib (in mscorlib.dll)
If the method attempts to read a surrogate character in the stream an exception will be raised and the position in the stream will advance. The position is restored to the original location before was called if the stream is seekable; however, if the stream is unseekable, the position will not be corrected. If surrogate characters can be expected in the stream, use the ReadChars method instead.
Because of data formatting conflicts, using this method with the following encodings is not recommended:
For a list of common I/O tasks, see Common I/O Tasks.
The following code example shows how to read and write data using memory as a backing store.
Imports System Imports System.IO Public Class BinaryRW Shared Sub Main() Dim i As Integer = 0 Dim invalidPathChars() As Char = Path.InvalidPathChars Dim memStream As new MemoryStream() Dim binWriter As New BinaryWriter(memStream) ' Write to memory. binWriter.Write("Invalid file path characters are: ") For i = 0 To invalidPathChars.Length - 1 binWriter.Write(invalidPathChars(i)) Next i ' Create the reader using the same MemoryStream ' as used with the writer. Dim binReader As New BinaryReader(memStream) ' Set Position to the beginning of the stream. memStream.Position = 0 ' Read the data from memory and write it to the console. Console.Write(binReader.ReadString()) Dim memoryData( _ CInt(memStream.Length - memStream.Position) - 1) As Char For i = 0 To memoryData.Length - 1 memoryData(i) = binReader.ReadChar() Next i Console.WriteLine(memoryData) End Sub End Class
.NET FrameworkSupported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1
.NET Framework Client ProfileSupported in: 4, 3.5 SP1
XNA FrameworkSupported in: 3.0, 2.0, 1.0
Portable Class LibrarySupported in: Portable Class Library
Supported in: Windows Phone 8.1
Supported in: Windows Phone Silverlight 8.1
Supported in: Windows Phone Silverlight 8