TextWriter.Null 字段
定义
提供 TextWriter,它不带任何可写入但无法从中读取的后备存储。Provides a TextWriter with no backing store that can be written to, but not read from.
public: static initonly System::IO::TextWriter ^ Null;
public static readonly System.IO.TextWriter Null;
staticval mutable Null : System.IO.TextWriter
Public Shared ReadOnly Null As TextWriter
字段值
注解
使用将 Null 输出重定向到不使用任何操作系统资源的流。Use Null to redirect output to a stream that will not consume any operating system resources.
当 TextWriter.Write 在上调用方法时 Null ,调用只会返回,而不会向任何后备存储写入任何数据。When the TextWriter.Write methods are invoked on Null, the call simply returns, and no data is actually written to any backing store.
有关常见 i/o 任务的列表,请参阅 常见 I/o 任务。For a list of common I/O tasks, see Common I/O Tasks.