40 lines
485 B
C#
40 lines
485 B
C#
namespace test
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{
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interface IIntf1
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{
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string GetType(int index);
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}
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interface IIntf2: IIntf1
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{
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bool IsDone();
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}
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class Impl: IIntf2
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{
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public string GetType(int index)
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{
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return "none";
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}
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public bool IsDone()
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{
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return true;
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}
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}
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class myclass
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{
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public static void Main(string[] args)
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{
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IIntf1 intf = new Impl();
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IIntf2 intf2 = intf as IIntf2;
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if (intf2 != null) {
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string str = intf2.GetType(0);
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}
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}
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}
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}
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