String.IConvertible.ToChar(IFormatProvider) 方法

定义

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

 virtual char System.IConvertible.ToChar(IFormatProvider ^ provider) = IConvertible::ToChar;
char IConvertible.ToChar (IFormatProvider provider);
Function ToChar (provider As IFormatProvider) As Char Implements IConvertible.ToChar

参数

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 对象中索引 0 处的字符。The character at index 0 in the current String object.

实现

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 Convert.ToChar(String, IFormatProvider) 方法。The recommended alternative is to call the Convert.ToChar(String, IFormatProvider) method.

适用于