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Get an enumerator that iterates through the HybridDictionary in C#
The HybridDictionary class in C# provides the GetEnumerator() method to iterate through its key-value pairs. This method returns an IDictionaryEnumerator object that allows you to traverse the collection efficiently. You can also use foreach loops to iterate through a HybridDictionary.
Syntax
Following is the syntax for getting an enumerator from a HybridDictionary −
IDictionaryEnumerator enumerator = hybridDict.GetEnumerator();
The enumerator provides these key properties −
enumerator.Key // Current key enumerator.Value // Current value enumerator.Entry // Current DictionaryEntry
Using GetEnumerator() Method
Example
using System;
using System.Collections;
using System.Collections.Specialized;
public class Demo {
public static void Main() {
HybridDictionary dict1 = new HybridDictionary();
dict1.Add("A", "Books");
dict1.Add("B", "Electronics");
dict1.Add("C", "Smart Wearables");
dict1.Add("D", "Pet Supplies");
dict1.Add("E", "Clothing");
dict1.Add("F", "Footwear");
Console.WriteLine("HybridDictionary1 elements...");
foreach(DictionaryEntry d in dict1) {
Console.WriteLine(d.Key + " " + d.Value);
}
HybridDictionary dict2 = new HybridDictionary();
dict2.Add("1", "One");
dict2.Add("2", "Two");
dict2.Add("3", "Three");
dict2.Add("4", "Four");
dict2.Add("5", "Five");
dict2.Add("6", "Six");
Console.WriteLine("\nHybridDictionary2 key-value pairs...");
IDictionaryEnumerator demoEnum = dict2.GetEnumerator();
while (demoEnum.MoveNext())
Console.WriteLine("Key = " + demoEnum.Key + ", Value = " + demoEnum.Value);
}
}
The output of the above code is −
HybridDictionary1 elements... A Books B Electronics C Smart Wearables D Pet Supplies E Clothing F Footwear HybridDictionary2 key-value pairs... Key = 1, Value = One Key = 2, Value = Two Key = 3, Value = Three Key = 4, Value = Four Key = 5, Value = Five Key = 6, Value = Six
Using IDictionaryEnumerator Properties
Example
using System;
using System.Collections;
using System.Collections.Specialized;
public class Demo {
public static void Main() {
HybridDictionary dict = new HybridDictionary();
dict.Add("A", "Gary");
dict.Add("B", "Andy");
dict.Add("C", "Mark");
dict.Add("D", "Barry");
dict.Add("E", "Katie");
dict.Add("F", "John");
Console.WriteLine("HybridDictionary key-value pairs...");
IDictionaryEnumerator demoEnum = dict.GetEnumerator();
while (demoEnum.MoveNext()) {
Console.WriteLine("Key = " + demoEnum.Key + ", Value = " + demoEnum.Value);
}
}
}
The output of the above code is −
HybridDictionary key-value pairs... Key = A, Value = Gary Key = B, Value = Andy Key = C, Value = Mark Key = D, Value = Barry Key = E, Value = Katie Key = F, Value = John
Comparison of Iteration Methods
| Method | Advantages | Use Case |
|---|---|---|
| foreach with DictionaryEntry | Simple syntax, cleaner code | When you need both key and value |
| GetEnumerator() with while | More control over iteration | When you need explicit enumeration control |
| foreach with Keys/Values | Direct access to specific collection | When you need only keys or only values |
Conclusion
The GetEnumerator()
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