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How to Post an Empty Body to REST API via HttpClient in C When working with REST APIs in C#, you may come across scenarios where you need to send a POST request with an empty body. This can be useful in situations where the API endpoint expects a POST request but doesn’t require any …

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Does C# have IsNullOrEmpty for List/IEnumerable?

If you’ve been working with C# for a while, you may have come across situations where you need to check if a List or IEnumerable is null or empty. In some other languages, like JavaScript, you have the convenience of using the Array.isArray() method or the length property to check if an array is empty …

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List Queries: 20 Times Faster than IQueryable?

Have you ever wondered why list queries are often faster than IQueryable queries in C#? In this article, we will explore the reasons behind this performance difference and discuss when and how to use each type of query. What is IQueryable? Before we dive into the performance comparison, let’s first understand what IQueryable is. IQueryable …

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Passing Different Number of Arguments to a Params Method at Runtime

How to Pass a Different Number of Arguments Using a List and Converting to an Array One way to pass a different number of arguments to a params method at runtime is by using a List<object> to store the arguments and then converting it to an array using the ToArray() method. Here’s an example: List<object> …

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Sorting Characters in a String in Alphabetical Order: How to Do It in C#

How to Sort Characters in a String Approach 1: Using LINQ One of the simplest ways to sort characters in a string is by using LINQ. LINQ provides a powerful set of extension methods that allow you to perform various operations on collections, including sorting. Here’s how you can use LINQ to sort characters in …

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How to Merge Two (or More) Lists into One in C# .NET

If you are working with C# .NET and need to merge multiple lists into one, there are several ways to achieve this. In this article, we will explore two commonly used methods: using LINQ’s Concat and ToList methods, and using the AddRange method. Method 1: Using LINQ’s Concat and ToList Methods The first method involves …

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Tree Data Structure in C#

How to Implement a Tree in C There is no standard tree data structure in C# because there are multiple ways to implement it based on specific requirements. However, we can start by defining a base class called Node that will serve as the foundation for our tree implementation. Here are a few options to …

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How to Replace Unicode Character “�” with a Space in C#

Have you ever encountered the Unicode character “�” in your C# code and wondered how to replace it with a space? In this article, we will explore two methods to achieve this using the C# programming language. We will provide you with code examples and explanations to help you understand the solution. Method 1: Using …

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How to Resolve the “Could not find a part of the path” Error Message in C What Causes the “Could not find a part of the path” Error? The “Could not find a part of the path” error occurs when the path you are trying to access does not exist or is incorrect. There are …

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How to Concatenate Two Arrays in C#

Method 1: Using the Concat Method The easiest way to concatenate two arrays in C# is by using the Concat method provided by the System.Linq namespace. This method takes two arrays as input and returns a new array that contains all the elements from both arrays. int[] array1 = { 1, 2, 3 }; int[] …

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