C#显式地实现接口成员的方法
本文实例讲述了C#显式地实现接口成员的方法。分享给大家供大家参考。具体实现方法如下:
// explicit1.cs
interface IDimensions
{
float Length();
float Width();
}
class Box : IDimensions
{
float lengthInches;
float widthInches;
public Box(float length, float width)
{
lengthInches = length;
widthInches = width;
}
// 显式接口成员实现:
float IDimensions.Length()
{
return lengthInches;
}
// 显式接口成员实现:
float IDimensions.Width()
{
return widthInches;
}
public static void Main()
{
// 声明类实例“myBox”:
Box myBox = new Box(30.0f, 20.0f);
// 声明接口实例“myDimensions”:
IDimensions myDimensions = (IDimensions) myBox;
// 打印出盒子的尺寸:
/* 下列注释行将产生编译
错误,因为这些行试图从类实例访问显式实现的
接口成员: */
//System.Console.WriteLine("Length: {0}", myBox.Length());
//System.Console.WriteLine("Width: {0}", myBox.Width());
/* 从接口的实例调用方法,
以打印出盒子的尺寸: */
System.Console.WriteLine("Length: {0}", myDimensions.Length());
System.Console.WriteLine("Width: {0}", myDimensions.Width());
}
}
代码2:
// explicit2.cs
// 声明英制单位接口:
interface IEnglishDimensions
{
float Length();
float Width();
}
// 声明公制单位接口:
interface IMetricDimensions
{
float Length();
float Width();
}
// 声明实现以下两个接口的“Box”类:
// IEnglishDimensions 和 IMetricDimensions:
class Box : IEnglishDimensions, IMetricDimensions
{
float lengthInches;
float widthInches;
public Box(float length, float width)
{
lengthInches = length;
widthInches = width;
}
// 显式实现 IEnglishDimensions 的成员:
float IEnglishDimensions.Length()
{
return lengthInches;
}
float IEnglishDimensions.Width()
{
return widthInches;
}
// 显式实现 IMetricDimensions 的成员:
float IMetricDimensions.Length()
{
return lengthInches * 2.54f;
}
float IMetricDimensions.Width()
{
return widthInches * 2.54f;
}
public static void Main()
{
// 声明类实例“myBox”:
Box myBox = new Box(30.0f, 20.0f);
// 声明英制单位接口的实例:
IEnglishDimensions eDimensions = (IEnglishDimensions) myBox;
// 声明公制单位接口的实例:
IMetricDimensions mDimensions = (IMetricDimensions) myBox;
// 以英制单位打印尺寸:
System.Console.WriteLine("Length(in): {0}", eDimensions.Length());
System.Console.WriteLine("Width (in): {0}", eDimensions.Width());
// 以公制单位打印尺寸:
System.Console.WriteLine("Length(cm): {0}", mDimensions.Length());
System.Console.WriteLine("Width (cm): {0}", mDimensions.Width());
}
}
希望本文所述对大家的C#程序设计有所帮助。
以上是 C#显式地实现接口成员的方法 的全部内容, 来源链接: utcz.com/z/320842.html