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
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