C# Language
- Getting started with C# Language
- Learn Tutorial
- How to Start Learning C# While Still in College
- Awesome Book
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- .NET Compiler Platform (Roslyn)
- Access Modifiers
- Access network shared folder with username and password
- Accessing Databases
- Action Filters
- Aliases of built-in types
- An overview of c# collections
- Anonymous types
- Arrays
- ASP.NET Identity
- AssemblyInfo.cs Examples
- Async/await, Backgroundworker, Task and Thread Examples
- Async-Await
- Asynchronous Socket
- Attributes
- BackgroundWorker
- BigInteger
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BindingList
- Built-in Types
- C# 3.0 Features
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- C# 5.0 Features
- C# 6.0 Features
- C# 7.0 Features
- C# Authentication handler
- C# Script
- Caching
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- Checked and Unchecked
- CLSCompliantAttribute
- Code Contracts
- Code Contracts and Assertions
- Collection Initializers
- Comments and regions
- Common String Operations
- Conditional Statements
- Constructors and Finalizers
- Creating a Console Application using a Plain-Text Editor and the C# Compiler (csc.exe)
- Creating Own MessageBox in Windows Form Application
- Creational Design Patterns
- Cryptography (System.Security.Cryptography)
- Data Annotation
- DateTime Methods
- Delegates
- Dependency Injection
- Diagnostics
- Dynamic type
- Enum
- Equality Operator
- Equals and GetHashCode
- Events
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- Expression Trees
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- File and Stream I/O
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- Func delegates
- Function with multiple return values
- Functional Programming
- Garbage Collector in .Net
- Generating Random Numbers in C#
- Generic Lambda Query Builder
- Generics
- Getting Started: Json with C#
- Guid
- Handling FormatException when converting string to other types
- Hash Functions
- How to use C# Structs to create a Union type (Similar to C Unions)
- ICloneable
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- IDisposable interface
- IEnumerable
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- Immutability
- Implementing Decorator Design Pattern
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- IQueryable interface
- Iterators
- Keywords
- Lambda expressions
- Lambda Expressions
- LINQ Queries
- Aggregate
- All
- Any
- Any and First(OrDefault) - best practice
- Basics
-
Build your own Linq operators for IEnumerable
- Chaining methods
- Concat
- Contains
- Count and LongCount
- DefaultIfEmpty
- Defining a variable inside a Linq query (let keyword)
- Distinct
- ElementAt and ElementAtOrDefault
- Enumerating the Enumerable
- Except
- First, FirstOrDefault, Last, LastOrDefault, Single, and SingleOrDefault
- GroupBy
- GroupBy one or multiple fields
- GroupBy Sum and Count
- GroupJoin with outer range variable
- Incrementally building a query
- Joining multiple sequences
- Joining on multiple keys
- JOINS
- Linq Quantifiers
- OrderBy
- OrderByDescending
- Query collection by type / cast elements to type
- Query Ordering - OrderBy() ThenBy() OrderByDescending() ThenByDescending()
- Range and Repeat
- Reverse
- Select - Transforming elements
-
Select with Func
- SelectMany
- SelectMany: Flattening a sequence of sequences
- SequenceEqual
- Skip and Take
- SkipWhile
- Sum
- TakeWhile
- ToDictionary
- ToLookup
- Union
- Using Range with various Linq methods
- Using SelectMany instead of nested loops
- Where
- Zip
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- Literals
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- Microsoft.Exchange.WebServices
- Named and Optional Arguments
- Named Arguments
- nameof Operator
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- Networking
- Nullable types
- Null-Coalescing Operator
- Null-conditional Operators
- NullReferenceException
- O(n) Algorithm for circular rotation of an array
- Object initializers
- Object Oriented Programming In C#
-
ObservableCollection
- Operators
- Overflow
- Overload Resolution
- Parallel LINQ (PLINQ)
- Partial class and methods
- Performing HTTP requests
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- Pointers & Unsafe Code
- Polymorphism
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- String Concatenate
- String Escape Sequences
- String Interpolation
- String Manipulation
- String.Format
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- Structs
- Structural Design Patterns
- Synchronization Context in Async-Await
- System.DirectoryServices.Protocols.LdapConnection
- System.Management.Automation
- T4 Code Generation
- Task Parallel Library
- Task Parallel Library (TPL) Dataflow Constructs
- Threading
- Timers
- Tuples
- Type Conversion
- Unsafe Code in .NET
- Using Directive
- Using json.net
- Using SQLite in C#
- Using Statement
- Value type vs Reference type
- Verbatim Strings
- Windows Communication Foundation
- XDocument and the System.Xml.Linq namespace
- XML Documentation Comments
- XmlDocument and the System.Xml namespace
- Yield Keyword
Example
All is used to check, if all elements of a collection match a condition or not.
see also: .Any
1. Empty parameter
All: is not allowed to be used with empty parameter.
2. Lambda expression as parameter
All: Returns true if all elements of collection satisfies the lambda expression and false otherwise:
var numbers = new List<int>(){ 1, 2, 3, 4, 5};
bool result = numbers.All(i => i < 10); // true
bool result = numbers.All(i => i >= 3); // false
3. Empty collection
All: Returns true if the collection is empty and a lambda expression is supplied:
var numbers = new List<int>();
bool result = numbers.All(i => i >= 0); // true
Note:
All will stop iteration of the collection as soon as it finds an element not matching the condition. This means that the collection will not necessarily be fully enumerated; it will only be enumerated far enough to find the first item not matching the condition.
