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Articles by Ankith Reddy
Page 9 of 73
C# Program to generate random lowercase letter
In C#, you can generate a random lowercase letter using the Random class and ASCII character conversion. This technique generates a random number between 0 and 25, then converts it to a corresponding lowercase letter from 'a' to 'z'. Syntax Following is the syntax for generating a random lowercase letter − Random random = new Random(); int randomIndex = random.Next(0, 26); char randomLetter = (char)('a' + randomIndex); How It Works The process involves three key steps: Generate random number: random.Next(0, 26) produces a number from 0 to 25 ...
Read MoreC# Program to find a key in Dictionary
In C#, a Dictionary is a collection that stores key-value pairs. To check if a specific key exists in a Dictionary, you can use the ContainsKey() method, which returns true if the key is found and false otherwise. Syntax Following is the syntax for using the ContainsKey() method − bool result = dictionary.ContainsKey(key); Parameters key − The key to locate in the Dictionary. Return Value Returns true if the Dictionary contains an element with the specified key; otherwise, false. Using ContainsKey() Method The most straightforward way to ...
Read MoreWhat are the difference between Composition and Aggregation in C#?
Composition and Aggregation are two important types of associations in C# that represent different levels of dependency between classes. Understanding these relationships helps design better object-oriented systems with proper coupling and lifecycle management. Composition Composition represents a strong "part-of" relationship where the child object cannot exist independently of the parent object. When the parent is destroyed, all child objects are also destroyed automatically. Composition: Strong Ownership Car (Owner) Engine (Owned) ...
Read MoreHow to join two lists in C#?
To join two lists in C#, you can use several methods. The most common approaches are using the AddRange() method to modify an existing list, or using LINQ's Concat() method to create a new combined list without modifying the originals. Syntax Using AddRange() to modify the first list − list1.AddRange(list2); Using LINQ Concat() to create a new list − var combinedList = list1.Concat(list2).ToList(); Using AddRange() Method The AddRange() method adds all elements from the second list to the end of the first list, modifying the original list − ...
Read MoreFunc generic type in C#
The Func generic type in C# is a built-in delegate that represents a method which takes zero or more input parameters and returns a value. It provides a convenient way to store anonymous methods, lambda expressions, and regular methods that return a value. Syntax Following is the syntax for declaring a Func delegate − Func funcName; // No parameters, returns TResult Func funcName; ...
Read MoreConvert.ToUInt64 Method in C#
The Convert.ToUInt64() method in C# converts a specified value to a 64-bit unsigned integer (ulong). This method accepts various data types and returns their equivalent ulong representation. Syntax Following is the syntax for the Convert.ToUInt64() method − public static ulong ToUInt64(object value) public static ulong ToUInt64(string value) public static ulong ToUInt64(char value) public static ulong ToUInt64(int value) public static ulong ToUInt64(double value) Parameters value − The value to convert. Can be of type object, string, char, numeric types, or other convertible types. Return Value Returns a 64-bit ...
Read MoreWhat does Array.Length property of array class do in C#?
The Array.Length property in C# is used to get the total number of elements in an array. This property returns an integer value representing the array's size, which is essential for array manipulation and iteration. Syntax Following is the syntax for using the Array.Length property − int length = arrayName.Length; Return Value The Length property returns an int value representing the total number of elements in the array. Using Array.Length with Array.CreateInstance The following example demonstrates how to use Array.Length with dynamically created arrays − using System; class ...
Read MoreHow to truncate a file in C#?
To truncate a file in C#, use the FileStream.SetLength method. This method allows you to change the size of a file by either reducing it (truncating) or expanding it to a specified length. Syntax Following is the syntax for the SetLength method − public override void SetLength(long value); Parameters value − A long representing the desired length of the stream in bytes. How It Works The behavior of SetLength depends on whether the new value is smaller or larger than the current file size − ...
Read MoreC# Program to access tuple elements
In C#, tuples are data structures that can hold multiple values of different types. Once you create a tuple, you can access its elements using the Item properties, where each element is numbered starting from Item1. Syntax Following is the syntax for creating a tuple using Tuple.Create() − var tupleName = Tuple.Create(value1, value2, value3, ...); Following is the syntax for accessing tuple elements − tupleName.Item1 // First element tupleName.Item2 // Second element tupleName.Item3 // Third element Using Item Properties to Access Elements Create a tuple with ...
Read MoreC# object serialization
Object serialization in C# is the process of converting an object into a stream of bytes for storage or transmission. The serialized data can be saved to files, databases, or sent over a network, and later deserialized back into objects. C# provides several approaches for serialization, including binary serialization, XML serialization, and JSON serialization. Binary serialization preserves the complete object state and type information. Syntax For binary serialization using BinaryFormatter − [Serializable] public class ClassName { // class members } BinaryFormatter formatter = new BinaryFormatter(); formatter.Serialize(stream, objectInstance); For deserialization ...
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