DBNull.IConvertible.ToByte(IFormatProvider) 方法

定义

不支持此转换。This conversion is not supported. 如果尝试执行此转换,便会引发 InvalidCastExceptionAttempting to make this conversion throws an InvalidCastException.

 virtual System::Byte System.IConvertible.ToByte(IFormatProvider ^ provider) = IConvertible::ToByte;
byte IConvertible.ToByte (IFormatProvider provider);
abstract member System.IConvertible.ToByte : IFormatProvider -> byte
override this.System.IConvertible.ToByte : IFormatProvider -> byte
Function ToByte (provider As IFormatProvider) As Byte Implements IConvertible.ToByte

参数

provider
IFormatProvider

一个实现 IFormatProvider 接口的对象。An object that implements the IFormatProvider interface. (未使用此参数;指定 null。)(This parameter is not used; specify null.)

返回

Byte

无。None. 未使用此成员的返回值。The return value for this member is not used.

实现

例外

DBNull 类型不支持此转换。This conversion is not supported for the DBNull type.

适用于

另请参阅