String.IConvertible.ToType(Type, IFormatProvider) 方法

定义

有关此成员的说明,请参见 ToType(Type, IFormatProvider)For a description of this member, see ToType(Type, IFormatProvider).

 virtual System::Object ^ System.IConvertible.ToType(Type ^ type, IFormatProvider ^ provider) = IConvertible::ToType;
object IConvertible.ToType (Type type, IFormatProvider provider);

参数

type
Type

返回对象的类型。The type of the returned object.

provider
IFormatProvider

一个对象,提供区域性特定的格式设置信息。An object that provides culture-specific formatting information.

返回

当前 String 对象的转换值。The converted value of the current String object.

实现

异常

typenulltype is null.

当前 String 对象的值不能转换为 type 参数指定的类型。The value of the current String object cannot be converted to the type specified by the type parameter.

注解

此成员是显式接口成员的实现。This member is an explicit interface member implementation. 它只能在 String 实例被强制转换为 IConvertible 接口时使用。It can be used only when the String instance is cast to an IConvertible interface. 建议的替代项是调用 ChangeType 方法。The recommended alternative is to call the ChangeType method.

适用于