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
- Binary Serialization
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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
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- CLSCompliantAttribute
- Code Contracts
- Code Contracts and Assertions
- Collection Initializers
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- 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
- Exception Handling
- Expression Trees
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- File and Stream I/O
- FileSystemWatcher
- 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
- IComparable
- IDisposable interface
- IEnumerable
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- Immutability
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- Microsoft.Exchange.WebServices
- Named and Optional Arguments
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- 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#
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ObservableCollection
- Operators
- Overflow
- Overload Resolution
- Parallel LINQ (PLINQ)
- Partial class and methods
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- 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
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- Type Conversion
- Unsafe Code in .NET
- Using Directive
- Using json.net
- Using SQLite in C#
- Using Statement
- Using Statement Basics
- Executing code in constraint context
- Gotcha: Exception in Dispose method masking other errors in Using blocks
- Gotcha: returning the resource which you are disposing
- Multiple using statements with one block
- Using Dispose Syntax to define custom scope
- Using Statements and Database Connections
- Using statements are null-safe
- 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
C# Language Using Statement Gotcha: Exception in Dispose method masking other errors in Using blocks
Example
Consider the following block of code.
try
{
using (var disposable = new MyDisposable())
{
throw new Exception("Couldn't perform operation.");
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
class MyDisposable : IDisposable
{
public void Dispose()
{
throw new Exception("Couldn't dispose successfully.");
}
}
You may expect to see "Couldn't perform operation" printed to the Console but you would actually see "Couldn't dispose successfully." as the Dispose method is still called even after the first exception is thrown.
It is worth being aware of this subtlety as it may be masking the real error that prevented the object from being disposed and make it harder to debug.
