SqlFileStream.ReadByte 方法

定义

命名空间:
System.Data.SqlTypes
程序集:
System.Data.dll

从流中读取一个字节，并将流内的位置向前提升一个字节，或者如果已到达流结尾，则返回 -1。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.

public:
 override int ReadByte();
public override int ReadByte ();
override this.ReadByte : unit -> int
Public Overrides Function ReadByte () As Integer

返回

Int32

强制转换为 Int32 的无符号字节，如果到达流的末尾，则为 -1。The unsigned byte cast to an Int32, or -1 if at the end of the stream.

例外

NotSupportedException

对象不支持数据读取。The object does not support reading of data.

注解

使用 CanRead 属性可确定当前实例是否支持读取。Use the CanRead property to determine whether the current instance supports reading.

适用于