要从SortedList中删除具有指定键的元素,代码如下-
using System; using System.Collections; public class Demo { public static void Main(String[] args) { SortedList sortedList = new SortedList(); sortedList.Add("A", "1"); sortedList.Add("B", "2"); sortedList.Add("C", "3"); sortedList.Add("D", "4"); sortedList.Add("E", "5"); sortedList.Add("F", "6"); sortedList.Add("G", "7"); sortedList.Add("H", "8"); sortedList.Add("I", "9"); sortedList.Add("J", "10"); Console.WriteLine("SortedList elements..."); foreach(DictionaryEntry d in sortedList) { Console.WriteLine("Key = "+d.Key + ", Value = " + d.Value); } Console.WriteLine("Count of SortedList key-value pairs = "+sortedList.Count); sortedList.Remove("H"); Console.WriteLine("\nEnumerator to iterate through the SortedList..."); IDictionaryEnumerator demoEnum = sortedList.GetEnumerator(); while (demoEnum.MoveNext()) Console.WriteLine("Key = " + demoEnum.Key + ", Value = " + demoEnum.Value); Console.WriteLine("Count of SortedList key-value pairs (Updated) = "+sortedList.Count); } }
输出结果
这将产生以下输出-
SortedList elements... Key = A, Value = 1 Key = B, Value = 2 Key = C, Value = 3 Key = D, Value = 4 Key = E, Value = 5 Key = F, Value = 6 Key = G, Value = 7 Key = H, Value = 8 Key = I, Value = 9 Key = J, Value = 10 Count of SortedList key-value pairs = 10 Enumerator to iterate through the SortedList... Key = A, Value = 1 Key = B, Value = 2 Key = C, Value = 3 Key = D, Value = 4 Key = E, Value = 5 Key = F, Value = 6 Key = G, Value = 7 Key = I, Value = 9 Key = J, Value = 10 Count of SortedList key-value pairs (Updated) = 9
让我们看另一个例子-
using System; using System.Collections; public class Demo { public static void Main(String[] args) { SortedList sortedList = new SortedList(); sortedList.Add("One", "Mouse"); sortedList.Add("Two", "Keyboard"); sortedList.Add("Three", "Headphone"); sortedList.Add("Four", "Speakers"); sortedList.Add("Five", "RAM"); Console.WriteLine("SortedList elements..."); foreach(DictionaryEntry d in sortedList) { Console.WriteLine("Key = "+d.Key + ", Value = " + d.Value); } Console.WriteLine("Count of SortedList key-value pairs = "+sortedList.Count); sortedList.Remove("Three"); Console.WriteLine("\nEnumerator to iterate through the SortedList..."); IDictionaryEnumerator demoEnum = sortedList.GetEnumerator(); while (demoEnum.MoveNext()) Console.WriteLine("Key = " + demoEnum.Key + ", Value = " + demoEnum.Value); Console.WriteLine("Count of SortedList key-value pairs (Updated) = "+sortedList.Count); } }
输出结果
这将产生以下输出-
SortedList elements... Key = Five, Value = RAM Key = Four, Value = Speakers Key = One, Value = Mouse Key = Three, Value = Headphone Key = Two, Value = Keyboard Count of SortedList key-value pairs = 5 Enumerator to iterate through the SortedList... Key = Five, Value = RAM Key = Four, Value = Speakers Key = One, Value = Mouse Key = Two, Value = Keyboard Count of SortedList key-value pairs (Updated) = 4