//接口 IDimensions 和一个类 Box,该类显式实现接口成员 getLength 和 getWidth。通过接口实例 dimensions 访问这些成员。
interface IDimensions { floatgetLength(); floatgetWidth(); } class Box : IDimensions { floatlengthInches; floatwidthInches; Box(float length, float width) { lengthInches = length; widthInches = width; } //Explicit interface member implementation: floatIDimensions.getLength() { return lengthInches; } //Explicit interface member implementation: floatIDimensions.getWidth() { return widthInches; } staticvoid Main() { //Declare a class instance box1: Box box1 = new Box(30.0f, 20.0f); //Declare an interface instance dimensions: IDimensions dimensions = (IDimensions)box1; //The following commented lines would produce compilation //errors because they try to access an explicitly implemented //interface member from a class instance: //System.Console.WriteLine("Length: {0}", box1.getlength()); //System.Console.WriteLine("Width: {0}", box1.getwidth()); //Print out the dimensions of the box by calling the methods //from an instance of the interface: System.Console.WriteLine("Length: {0}", dimensions.getLength()); System.Console.WriteLine("Width: {0}", dimensions.getWidth()); } } ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
Length: 30 Width: 20 //////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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