要获取SortedList中包含的元素数量,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.Clear(); Console.WriteLine("Count of SortedList (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 Count of SortedList (updated) = 0
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", "1"); sortedList.Add("Two", "2"); sortedList.Add("Three", "3"); sortedList.Add("Four", "4"); sortedList.Add("Five", "5"); sortedList.Add("Six", "6"); sortedList.Add("Seven", "7"); sortedList.Add("Eight", "8"); sortedList.Add("Nine", "9"); sortedList.Add("Ten", "10"); Console.WriteLine("Count of SortedList key-value pairs = "+sortedList.Count); Console.WriteLine("Enumerator to iterate through the SortedList..."); IDictionaryEnumerator demoEnum = sortedList.GetEnumerator(); while (demoEnum.MoveNext()) Console.WriteLine("Key = " + demoEnum.Key + ", Value = " + demoEnum.Value); } }
输出结果
这将产生以下输出-
Count of SortedList key-value pairs = 10 Enumerator to iterate through the SortedList... Key = Eight, Value = 8 Key = Five, Value = 5 Key = Four, Value = 4 Key = Nine, Value = 9 Key = One, Value = 1 Key = Seven, Value = 7 Key = Six, Value = 6 Key = Ten, Value = 10 Key = Three, Value = 3 Key = Two, Value = 2