从C#中的StringDictionary中删除具有指定键的条目
要从StringDictionary中删除具有指定键的条目，代码如下-
示例
using System;
using System.Collections;
using System.Collections.Specialized;
public class Demo {
public static void Main() {
StringDictionary strDict1 = new StringDictionary();
strDict1.Add("A", "John");
strDict1.Add("B", "Andy");
strDict1.Add("C", "Tim");
strDict1.Add("D", "Ryan");
strDict1.Add("E", "Kevin");
strDict1.Add("F", "Katie");
strDict1.Add("G", "Brad");
Console.WriteLine("StringDictionary1键值对...");
foreach(DictionaryEntry de in strDict1) {
Console.WriteLine(de.Key + " " + de.Value);
}
strDict1.Remove("D");
Console.WriteLine("\n删除后 StringDictionary1键值对...");
foreach(DictionaryEntry de in strDict1) {
Console.WriteLine(de.Key + " " + de.Value);
}
StringDictionary strDict2 = new StringDictionary();
strDict2.Add("1", "A");
strDict2.Add("2", "B");
strDict2.Add("3", "C");
strDict2.Add("4", "D");
strDict2.Add("5", "E");
Console.WriteLine("\nStringDictionary2键值对...");
IEnumerator demoEnum = strDict2.GetEnumerator();
DictionaryEntry d;
while (demoEnum.MoveNext()) {
d = (DictionaryEntry)demoEnum.Current;
Console.WriteLine("Key = " + d.Key + ", Value = " + d.Value);
}
}
}输出结果
这将产生以下输出-
StringDictionary1键值对... a John b Andy c Tim d Ryan e Kevin f Katie g Brad 删除后StringDictionary1键值对... a John b Andy c Tim e Kevin f Katie g Brad StringDictionary2键值对... Key = 1, Value = A Key = 2, Value = B Key = 3, Value = C Key = 4, Value = D Key = 5, Value = E
示例
让我们看另一个例子-
using System;
using System.Collections;
using System.Collections.Specialized;
public class Demo {
public static void Main() {
StringDictionary strDict1 = new StringDictionary();
strDict1.Add("A", "One");
strDict1.Add("B", "Two");
strDict1.Add("C", "Three");
strDict1.Add("D", "Four");
strDict1.Add("E", "Five");
Console.WriteLine("StringDictionary1键值对...");
foreach(DictionaryEntry de in strDict1) {
Console.WriteLine(de.Key + " " + de.Value);
}
strDict1.Remove("B");
strDict1.Remove("C");
Console.WriteLine("\n删除后 StringDictionary1键值对...");
foreach(DictionaryEntry de in strDict1) {
Console.WriteLine(de.Key + " " + de.Value);
}
}
}输出结果
这将产生以下输出-
StringDictionary1键值对... a One b Two c Three d Four e Five 删除后StringDictionary1键值对... a One d Four e Five