C#中的SortedDictionary.Remove()方法
C#中的SortedDictionary.Remove()方法用于从SortedDictionary<TKey，TValue>中移除具有指定键的元素。
输出结果
语法如下-
public bool Remove (TKey key);
在上方，参数键是要删除的元素的键。
示例
现在让我们看一个例子-
using System;
using System.Collections;
using System.Collections.Generic;
public class Demo {
public static void Main(){
SortedDictionary<int, string> sortedDict = new SortedDictionary<int, string>();
sortedDict.Add(100, "Mobile");
sortedDict.Add(200, "Laptop");
sortedDict.Add(300, "Desktop");
sortedDict.Add(400, "Speakers");
sortedDict.Add(500, "Headphone");
sortedDict.Add(600, "Earphone");
Console.WriteLine("SortedDictionary key-value pairs...");
IDictionaryEnumerator demoEnum = sortedDict.GetEnumerator();
while (demoEnum.MoveNext())
Console.WriteLine("Key = " + demoEnum.Key + ", Value = " + demoEnum.Value);
Console.WriteLine("\nKey 400 removed from SortedDictionary? = "+sortedDict.Remove(400));
Console.WriteLine("\nSortedDictionary key-value pairs...UPDATED");
demoEnum = sortedDict.GetEnumerator();
while (demoEnum.MoveNext())
Console.WriteLine("Key = " + demoEnum.Key + ", Value = " + demoEnum.Value);
SortedDictionary<int, string>.KeyCollection keyColl = sortedDict.Keys;
Console.WriteLine("\nKeys...list");
foreach( int i in keyColl ){
Console.WriteLine(i);
}
}
}输出结果
这将产生以下输出-
SortedDictionary key-value pairs... Key = 100, Value = Mobile Key = 200, Value = Laptop Key = 300, Value = Desktop Key = 400, Value = Speakers Key = 500, Value = Headphone Key = 600, Value = Earphone Key 400 removed from SortedDictionary? = True SortedDictionary key-value pairs...UPDATED Key = 100, Value = Mobile Key = 200, Value = Laptop Key = 300, Value = Desktop Key = 500, Value = Headphone Key = 600, Value = Earphone Keys...list 100 200 300 500 600
示例
现在让我们来看另一个示例-
using System;
using System.Collections;
using System.Collections.Generic;
public class Demo {
public static void Main(){
SortedDictionary<int, string> sortedDict = new SortedDictionary<int, string>();
sortedDict.Add(1, "Ultrabook");
sortedDict.Add(2, "Alienware");
sortedDict.Add(3, "Notebook");
sortedDict.Add(4, "Connector");
sortedDict.Add(5, "Flash Drive");
sortedDict.Add(6, "SSD");
sortedDict.Add(7, "HDD");
sortedDict.Add(8, "Earphone");
Console.WriteLine("SortedDictionary key-value pairs...");
IDictionaryEnumerator demoEnum = sortedDict.GetEnumerator();
while (demoEnum.MoveNext())
Console.WriteLine("Key = " + demoEnum.Key + ", Value = " + demoEnum.Value);
Console.WriteLine("\nKey 7 removed from SortedDictionary? = "+sortedDict.Remove(7));
Console.WriteLine("\nSortedDictionary key-value pairs...UPDATED");
demoEnum = sortedDict.GetEnumerator();
while (demoEnum.MoveNext())
Console.WriteLine("Key = " + demoEnum.Key + ", Value = " + demoEnum.Value);
SortedDictionary<int, string>.KeyCollection keyColl = sortedDict.Keys;
Console.WriteLine("\nKeys...list");
foreach( int i in keyColl ){
Console.WriteLine(i);
}
}
}输出结果
这将产生以下输出-
SortedDictionary key-value pairs... Key = 1, Value = Ultrabook Key = 2, Value = Alienware Key = 3, Value = Notebook Key = 4, Value = Connector Key = 5, Value = Flash Drive Key = 6, Value = SSD Key = 7, Value = HDD Key = 8, Value = Earphone Key 7 removed from SortedDictionary? = True SortedDictionary key-value pairs...UPDATED Key = 1, Value = Ultrabook Key = 2, Value = Alienware Key = 3, Value = Notebook Key = 4, Value = Connector Key = 5, Value = Flash Drive Key = 6, Value = SSD Key = 8, Value = Earphone Keys...list 1 2 3 4 5 6 8