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Articles by Shilpa Nadkarni
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How to Get Value from HashTable Collection in C# using Specified Key
A Hashtable is a collection of key-value pairs that provides fast lookup by key. In C#, you can retrieve values from a hashtable using the indexer syntax hashtable[key] or by checking if a key exists using the Contains() method. This is essential for accessing specific data when you know the corresponding key. Syntax Following is the syntax for getting a value from a hashtable using a specified key − // Check if key exists if (hashtable.Contains(key)) { object value = hashtable[key]; } // Direct access (may return null if key doesn't exist) ...
Read MoreHow to Convert Hashtable into an Array?
The Hashtable collection in C# is a non-generic collection of key-value pairs where each key is unique and non-null, while values can be duplicated or null. Converting a Hashtable into an array is a common operation when you need to work with the data in array format. The Hashtable class provides the CopyTo method to efficiently transfer its elements to an array. This method copies Hashtable items as DictionaryEntry objects to a one-dimensional array. Syntax Following is the syntax for the CopyTo method − public virtual void CopyTo(Array array, int arrayIndex); Parameters ...
Read MoreHow to Get Hashtable Elements as Sorted Array?
A Hashtable is a non-generic collection of key-value pairs that are arranged according to the hash code of the key. The hashtable optimizes lookups by calculating the hash code of each key and storing it internally. When accessing a particular value, this hash code is matched with the specified key. This hashtable collection is defined in the System.Collections namespace of C#. The class that represents the hashtable collection is the Hashtable class. By default, hashtable collections are unsorted. To get sorted data, we need to extract the elements into an Array and sort them. Why Hashtables Are Unsorted ...
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