Found 2684 Articles for Csharp

How to store/update Hashtable Elements?

Shilpa Nadkarni
Updated on 06-Jan-2023 15:14:33
A hashtable is a data structure that consists of a collection of key-value pairs. The hashtable collection uses a hash function to compute the hash code of the key. A hashtable can also be defined as a non-generic collection of key-value pairs. The hash code of each key is computed using a hash function and is stored in a different bucket internally. At the time of accessing values, this hash code is matched with that of the specified key, and results are returned. Unlike other data structures like the stack, queue, ArrayList, etc. that store single values, hashtable collection stores ... Read More

How to Get Hashtable Elements as Sorted Array?

Shilpa Nadkarni
Updated on 06-Jan-2023 14:54:08
A Hashtable is a non-generic collection of key-value pairs that are arranged as per the hash code of the key. A Hashtable is used to create a collection that uses a hash table for storage. The hashtable optimizes the lookup by calculating the hash code of each key and stores it internally into a basket. When we access the particular value from the hashtable, this hashcode 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. This class provides constructors, methods, and ... Read More

How to Convert Hashtable to String?

Shilpa Nadkarni
Updated on 06-Jan-2023 14:48:49
The hashtable collection in C# is a non-generic collection of elements. Each element of the hashtable is represented as a key-value pair. The keys of the hashtable are non-null and unique. The values can be duplicated and/or null. The Hashtable class of C# Systems.The collections interface is the representation of a hashtable collection. This class provides various constructors, methods, and properties to manipulate the hashtable collection. We can also convert hashtables into other collections like arrays, ArrayList, etc., and also to a string representation. In this article, let’s discuss how we can convert a hashtable collection into a string. How ... Read More

How to Convert Hashtable into an Array?

Shilpa Nadkarni
Updated on 06-Jan-2023 14:46:18
The hashtable collection in C# is a non-generic collection of items represented as key-value pairs. Each key is a unique, non-null element. The value on the other hand can be duplicated and/or null. The Hashtable class in C# represents the hashtable collection. This class provides the relevant methods to create objects, alter items in the collection, etc. The hashtable collection can be expressed as an array or ArrayList in C#. In this article, let’s discuss how we can convert a hashtable collection into an array. How to Convert Hashtable into an Array? To convert the hashtable into an array, the ... Read More

C# Program to Replace Items in One Hashtable with Another Hashtable

Shilpa Nadkarni
Updated on 22-Dec-2022 17:09:54
The hashtable collection in C# is a non-generic collection of key-value pairs that are organized based on the key’s hash code. The key is used to access the elements in the hashtable collection. Hashing helps us to efficiently retrieve data and eliminates the need for costly techniques of searching data. Hashing technique used the key itself to locate the data. This hashtable key is immutable and does not allow duplicate entries in the hashtable. The Hashtable class is defined in the System.Collections namespace provides the base class libraries for hashtable collection in C#. This Hashtable class is used to create ... Read More

C# Program to Print the Length of the Hashtable

Shilpa Nadkarni
Updated on 22-Dec-2022 18:08:50
Hashtable collection in C# is a collection of elements wherein each element consist of key-value pair. The key of the element is unique and non-null while the value of the element can be duplicated or even null. The key-and-value pairs are organized based on the hash code of the key. The key is used to access the elements in the collection. In C#, the class named Hashtable represents the hashtable collection. This class provides various constructors to construct/create the hashtable object. The Hashtable class also provides various methods and properties using which we can manipulate the hashtable collection. Let’s ... Read More

C# Program to Merge Two Hashtable Collections

Shilpa Nadkarni
Updated on 22-Dec-2022 18:03:32
The hashtable collection in C# stores key-value pairs. Each element or item in this collection is a key-value pair i.e. this collection is a double-element collection. The Key is unique, non-null, and used to access the elements in the hashtable. The hashtable collection is immutable and cannot have duplicate elements. This means combination of key-value should be unique. However, the values can be null or duplicated. The .Net Framework provides a HashTable class to implement the hashtable collection and contains the required functionality to implement a hashtable without any additional coding. Each element within the hashtable collection is a DictionaryEntry ... Read More

C# Program to Get Key based on Value in Hashtable Collection

Shilpa Nadkarni
Updated on 22-Dec-2022 17:29:42
A hash table is a collection in C# that holds items identified as key-value pairs. So unlike other data structures like the stack, queue, or ArrayList in C# that store a single value, hashtable in C# stores 2 values. These 2 values i.e. key-value pair form an element of the hash table. In a hashtable, the keys are unique and should not be null. The values in the hashtable can be null and also duplicated. In C#, the System.collections interface provides a class “Hashtable” which is used to represent the hashtable collection. This class provides various constructors to create a ... Read More

C# Program to Check if Value exists in Hashtable

Shilpa Nadkarni
Updated on 22-Dec-2022 17:22:55
The hashtable is an organized collection of key-value pairs wherein the keys are arranged as per the hash code of the key calculated using the hash function. While the keys should be non-null and unique in a hashtable, the values can be null and duplicate. The elements in the hashtable are accessed using the keys. In C#, the class “Hashtable” represents the hashtable collection. This class provides various properties and methods using which we can perform operations and access data in the hashtable. In this article, we will see how we can determine if a particular value is present ... Read More

C# Program to Check a HashTable collection is empty or not

Shilpa Nadkarni
Updated on 21-Dec-2022 18:30:37
The Hashtable collection in C# is a collection of key-value pairs that are organized based on the hash code of the key. The hash code is calculated using a hash code function. Each element in the hashtable is a key-value pair with unique keys. Keys also have to be nonnull. Values can be null and duplicated. In this article, we will discuss how to check if the hashtable collection is empty. How to Check if the Hashtable Collection is Empty? The class in C# that implements the hashtable collection is the Hashtable class. We can check if the hashtable collection ... Read More
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