System.Console.WriteLine("按\"y\"健,执行下面写操作将抛出异常,按其他健跳过写操作继续:"); if (System.Console.ReadLine().ToLower() == "y") { System.Console.WriteLine("抛出异常..."); al.Clear(); }
System.Console.WriteLine("\nReadOnlyHashTable Property Test:"); //多态 System.Collections.Hashtable ht = x.ReadOnlyHashTable; foreach (System.Collections.DictionaryEntry e in ht) { System.Console.WriteLine("Key: {0} , Value: {1}", e.Key, e.Value); } System.Console.WriteLine(); System.Collections.IDictionaryEnumerator ide = ht.GetEnumerator(); while (ide.MoveNext()) { System.Console.WriteLine("Key: {0} , Value: {1}", ide.Key, ide.Value); } System.Console.WriteLine("按\"y\"健,执行下面写操作将抛出异常,按其他健跳过写操作继续:"); if (System.Console.ReadLine().ToLower() == "y") { System.Console.WriteLine("抛出异常..."); ht.Clear(); } System.Console.ReadLine(); }}
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