DataReaderExtensions.GetByte(DbDataReader, String) 方法

定义

以字节的形式获取指定列的值。Gets the value of the specified column as a byte.

public:
[System::Runtime::CompilerServices::Extension]
 static System::Byte GetByte(System::Data::Common::DbDataReader ^ reader, System::String ^ name);
public static byte GetByte (this System.Data.Common.DbDataReader reader, string name);
static member GetByte : System.Data.Common.DbDataReader * string -> byte
<Extension()>
Public Function GetByte (reader As DbDataReader, name As String) As Byte

参数

reader
DbDataReader

要从中获取列值的数据读取器。The data reader to get the column value from.

name
String

列的名称。The name of the column.

返回

Byte

指定列的值。The value of the specified column.

例外

指定的名称不是有效的列名。The name specified is not a valid column name.

指定的强制转换无效。The specified cast is not valid.

适用于

另请参阅