c# - Using linq for multiple condition in where

C# - Using linq for multiple condition in where

You can use LINQ to filter a collection based on multiple conditions using the where clause. Here's an example:

using System; using System.Collections.Generic; using System.Linq; class Program { static void Main() { // Sample data List<Person> people = new List<Person> { new Person { Name = "John", Age = 25, City = "New York" }, new Person { Name = "Jane", Age = 30, City = "Chicago" }, new Person { Name = "Bob", Age = 22, City = "Los Angeles" } }; // Example using LINQ with multiple conditions in the where clause var result = people.Where(p => p.Age > 25 && p.City == "New York"); // Display the result foreach (var person in result) { Console.WriteLine($"Name: {person.Name}, Age: {person.Age}, City: {person.City}"); } } } class Person { public string Name { get; set; } public int Age { get; set; } public string City { get; set; } }

In this example, the people list is filtered using LINQ's Where method with multiple conditions specified in the lambda expression. The conditions are p.Age > 25 and p.City == "New York". Adjust the conditions according to your specific filtering requirements.

Examples

  1. How to Use LINQ for Multiple Conditions in WHERE Clause in C#:

    var result = myList.Where(item => item.Property1 == value1 && item.Property2 == value2);

    Description: This code snippet demonstrates using LINQ to filter a collection (myList) based on multiple conditions in the WHERE clause.

  2. C# LINQ - Using OR Operator in WHERE Clause:

    var result = myList.Where(item => item.Property1 == value1 || item.Property2 == value2);

    Description: Illustrates how to use the OR operator (||) in the LINQ WHERE clause to filter items based on multiple conditions.

  3. C# LINQ - Combining Multiple Conditions with AND and OR:

    var result = myList.Where(item => (item.Property1 == value1 && item.Property2 == value2) || item.Property3 == value3);

    Description: This code showcases combining multiple conditions using both the AND (&&) and OR (||) operators in the LINQ WHERE clause.

  4. C# LINQ - Filtering with Multiple Conditions and Null Checks:

    var result = myList.Where(item => item.Property1 == value1 && (item.Property2 == value2 || item.Property2 == null));

    Description: Demonstrates using LINQ to filter items based on multiple conditions, including null checks within the WHERE clause.

  5. C# LINQ - Using LINQ Methods for Multiple Conditions:

    var result = myList.Where(item => item.Property1 == value1) .Where(item => item.Property2 == value2);

    Description: Utilizes LINQ methods chaining to apply multiple conditions sequentially in the WHERE clause.

  6. C# LINQ - Filtering with Dynamic Conditions in WHERE Clause:

    var result = myList.Where(item => (value1 == null || item.Property1 == value1) && (value2 == null || item.Property2 == value2));

    Description: Implements dynamic conditions in the LINQ WHERE clause, allowing for optional filtering based on certain conditions.

  7. C# LINQ - Using LINQ Query Syntax for Multiple Conditions:

    var result = from item in myList where item.Property1 == value1 && item.Property2 == value2 select item;

    Description: Shows how to use LINQ query syntax to express multiple conditions in the WHERE clause.

  8. C# LINQ - Filtering with Multiple Conditions and String Comparison:

    var result = myList.Where(item => item.Property1.Equals(value1, StringComparison.OrdinalIgnoreCase) && item.Property2.StartsWith("prefix"));

    Description: Incorporates string comparison and manipulation within the LINQ WHERE clause to filter items based on multiple conditions.

  9. C# LINQ - Using Any() for Multiple Conditions in Collections:

    var result = myList.Where(item => item.Property1 == value1 || myList.Any(otherItem => otherItem.Property2 == value2));

    Description: Demonstrates using the Any() method to apply multiple conditions, including checking conditions in another collection.

  10. C# LINQ - Filtering with Nullable Types in WHERE Clause:

    var result = myList.Where(item => item.NullableProperty == null || item.NullableProperty.Value == value);

    Description: Addresses scenarios involving nullable types in the LINQ WHERE clause, allowing for filtering based on multiple conditions, including null checks.

More Tags

in-clause xhtml android-update-app uicollectionview uifont ajax shift photo-upload docker-network h2

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