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alex_dev62
·
Why is Dictionary<TKey, TValue> better than Hashtable in C#?
Hi everyone! I recently started learning C# and came across collections. I see that there is `Hashtable` (from `System.Collections`) and `Dictionary` (from `System.Collections.Generic`). They both seem to store key-value pairs, but everywhere they recommend using `Dictionary`.
I wrote a small example with `Hashtable`:
```csharp
Hashtable table = new Hashtable();
table.Add("key1", 123);
table.Add("key2", "string");
foreach (DictionaryEntry entry in table)
{
Console.WriteLine($"{entry.Key}: {entry.Value}");
}
```
And with `Dictionary`:
```csharp
Dictionary dict = new Dictionary();
dict.Add("key1", 123);
dict.Add("key2", 456); // everything is strict here
foreach (KeyValuePair kvp in dict)
{
Console.WriteLine($"{kvp.Key}: {kvp.Value}");
}
