BinaryWriter.Write Method (Char)
Writes a Unicode character to the current stream and advances the current position of the stream in accordance with the Encoding used and the specific characters being written to the stream.
Assembly: mscorlib (in mscorlib.dll)
| Exception | Condition |
|---|---|
| IOException |
An I/O error occurs. |
| ObjectDisposedException |
The stream is closed. |
| ArgumentException |
ch is a single surrogate character. |
Because of data formatting conflicts, using this method with the following encodings is not recommended:
-
UTF-7
-
ISO-2022-JP
-
ISCII
For a list of common I/O tasks, see Common I/O Tasks.
Unicode surrogate characters must be written out as pairs together in the same call, not individually. If you require support for surrogate pairs in your application, consider using a character array and the Write method overload.
The following code example shows how to read and write data using memory as a backing store.
using System; using System.IO; class BinaryRW { static void Main() { int i = 0; char[] invalidPathChars = Path.InvalidPathChars; MemoryStream memStream = new MemoryStream(); BinaryWriter binWriter = new BinaryWriter(memStream); // Write to memory. binWriter.Write("Invalid file path characters are: "); for(i = 0; i < invalidPathChars.Length; i++) { binWriter.Write(invalidPathChars[i]); } // Create the reader using the same MemoryStream // as used with the writer. BinaryReader binReader = 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()); char[] memoryData = new char[memStream.Length - memStream.Position]; for(i = 0; i < memoryData.Length; i++) { memoryData[i] = binReader.ReadChar(); } Console.WriteLine(memoryData); } }
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
