Found 584 relevant articles
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Converting Strings to Types in C#: An In-depth Analysis of Type.GetType and Assembly.GetType Methods
This article provides a comprehensive examination of two primary methods for converting strings to actual types in C#: Type.GetType and Assembly.GetType. Through detailed code examples and principle analysis, it explains why Type.GetType may return null when handling custom types and how to resolve this issue by including assembly information or using Assembly.GetType. The article also discusses fundamental concepts of type resolution and best practices, offering developers complete solutions.
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Best Practices for Dynamic Assembly Loading and AppDomain Isolation
This article explores the correct methods for dynamically loading assemblies, instantiating classes, and invoking methods in the .NET environment. By analyzing the advantages and disadvantages of reflection mechanisms and AppDomain isolation, it details how to use Assembly.LoadFile, GetType, and Activator.CreateInstance for type loading and instantiation, with a focus on the security and flexibility benefits of AppDomain.CreateDomain and CreateInstanceFromAndUnwrap. The article also discusses using the InvokeMember method for dynamic calls when the calling assembly cannot access target type information, and how interface abstraction enables type decoupling. Finally, it briefly introduces the Managed Add-ins framework as an advanced solution for dynamic loading.
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C# Reflection: In-Depth Analysis of Obtaining Class References from Strings and Invoking Static Methods
This article provides a comprehensive exploration of C# reflection mechanisms for dynamically obtaining class references from strings and invoking static methods. Through detailed analysis of the Type.GetType method's core principles, supplemented by Assembly.GetType applications, it examines the complete type lookup process, namespace and assembly impacts, method invocation binding mechanisms, and offers complete code examples with best practice recommendations.
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Comprehensive Guide to Resolving "Referenced Assembly Does Not Have a Strong Name" Error
This article provides an in-depth analysis of the "Referenced assembly does not have a strong name" error in .NET development, covering the fundamentals of strong name signing and presenting multiple solutions including dynamic assembly loading, manual signing of third-party assemblies, and automated tools. With detailed code examples and step-by-step instructions, the article explores key techniques and considerations in the signing process, with special attention to changes in .NET Core/5+ environments, offering developers a complete problem-solving guide.
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Dynamic Class Instance Creation from Strings in C#
This technical paper provides an in-depth exploration of dynamically creating class instances from string names at runtime in C#. Focusing on the core mechanism of Activator.CreateInstance method, it details type resolution using Type.GetType and instance creation strategies in both single-assembly and multi-assembly environments. The paper covers parameterized constructor invocation and presents robust implementation examples. Professional insights on reflection performance and security considerations are included to help developers master this essential metaprogramming technique.
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Effective Solutions for 'Unable to load one or more of the requested types' Error in Entity Framework
This article provides a comprehensive analysis of the common 'Unable to load one or more of the requested types' error in Entity Framework deployments, focusing on the solution of setting project reference 'Copy Local' property to true, along with complete diagnostic methods and preventive measures to help developers quickly identify and resolve assembly loading issues.
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Dynamically Retrieving All Inherited Classes of an Abstract Class Using Reflection
This article explores how to dynamically obtain all non-abstract inherited classes of an abstract class in C# through reflection mechanisms. It provides a detailed analysis of core reflection methods such as Assembly.GetTypes(), Type.IsSubclassOf(), and Activator.CreateInstance(), along with complete code implementations. The discussion covers constructor signature consistency, performance considerations, and practical application scenarios. Using a concrete example of data exporters, it demonstrates how to achieve extensible designs that automatically discover and load new implementations without modifying existing code.
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C# Reflection: Efficiently Retrieving All Types Implementing an Interface
This article provides an in-depth exploration of using reflection in C# 3.0/.NET 3.5 to retrieve all types that implement a specific interface. By analyzing the limitations of traditional iteration approaches, it presents an optimized solution based on LINQ and AppDomain, thoroughly explaining the working principles of the IsAssignableFrom method and providing complete code examples with performance comparisons. The article also discusses practical application scenarios and best practices to help developers write more efficient and maintainable reflection code.
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Analysis and Solutions for Parser Errors in ASP.NET Application Deployment
This paper provides an in-depth analysis of common parser errors during ASP.NET application deployment, focusing on the root causes of 'Could not load type' errors. Through detailed error scenario reproduction and solution comparison, it systematically introduces the correct deployment method using IIS 'Add Application' functionality as an alternative to manual virtual directory creation, offering complete code examples and configuration instructions to help developers thoroughly resolve such deployment issues.
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In-depth Analysis of Dynamic Object Instance Creation from Type in C#
This article provides a comprehensive exploration of dynamic object instance creation from Type in C#. It details the various overloads of Activator.CreateInstance method and their application scenarios, combines performance considerations of reflection mechanism, offers complete code examples and best practice recommendations. The article also compares similar dynamic instantiation mechanisms in other programming languages to help developers fully understand this important technology.
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Technical Analysis of Dynamic Compilation and Execution of C# Code Fragments
This article explores methods for dynamically compiling and executing C# code fragments, focusing on CodeDOM and Roslyn technologies, with design considerations for version control.
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Advanced Mocking Techniques for out/ref Parameters in Moq: From Fundamentals to Practice
This article provides an in-depth exploration of mocking techniques for out and ref parameters in the Moq framework. By analyzing new features in Moq 4.8+, it details how to use Callback and Returns methods with custom delegates to set and verify by-ref parameters. The article covers complete implementations from basic usage to advanced techniques, including parameter constraints, conditional logic, and version compatibility considerations, offering practical guidance for handling complex parameter scenarios in unit testing.
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C# Reflection Method Invocation: Correct Parameter Passing and Common Error Analysis
This article provides an in-depth exploration of parameter passing in C# reflection method invocation, focusing on the common "object does not match target type" error. Through comparative analysis of incorrect and correct implementations, it explains the proper usage of MethodInfo.Invoke method, including instance object passing and parameter array construction. With detailed code examples, the article offers comprehensive solutions and best practices to help developers master core techniques of reflection method invocation.
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Prevention and Handling of StackOverflowException: A Practical Analysis Based on XslCompiledTransform
This paper delves into strategies for preventing and handling StackOverflowException in .NET environments, with a focus on infinite recursion issues in the XslCompiledTransform.Transform method. It explains why StackOverflowException cannot be caught by try-catch blocks in .NET Framework 2.0 and later, and proposes two core solutions from the best answer: code inspection to prevent infinite recursion and process isolation for exception containment. Additionally, it references other answers to supplement advanced techniques like stack depth monitoring, thread supervision, and static code analysis. Through detailed code examples and theoretical insights, this article aims to help developers build more robust applications and effectively manage recursion risks.
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Configuration Management for Libraries (DLLs): Alternatives to app.config and Practical Guide
This article delves into the challenges and solutions for managing configuration settings in .NET libraries (DLLs). Unlike executable files that use app.config, libraries cannot directly utilize ConfigurationManager.AppSettings as it reads the configuration of the running assembly. The article details how to create separate configuration files for libraries (e.g., DllName.dll.config) and manually load and read settings via the ConfigurationManager.OpenExeConfiguration method. Topics include file creation, project settings in Visual Studio, code implementation examples (such as the GetAppSetting function), and deployment considerations (e.g., setting "Copy to Output Directory"). Additionally, it covers naming conventions for configuration files, exception handling, and best practices for reusing libraries across different applications. Through systematic analysis and code samples, this guide provides a comprehensive approach to effective configuration management in libraries.
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Comprehensive Guide to ASP.NET Core MediatR Dependency Injection Configuration: Resolving "Register your handlers with the container" Errors
This article provides an in-depth exploration of common dependency injection configuration issues when implementing CQRS patterns with MediatR in ASP.NET Core applications. Through analysis of a typical error case, it explains the registration mechanism of the AddMediatR extension method and its limitations, with particular focus on proper dependency injection handling for custom repository interfaces. The article includes complete code examples and solutions, compares different error diagnosis approaches, and helps developers understand the integration principles between MediatR and dependency injection containers.
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Complete Guide to Adding Unique Constraints in Entity Framework Core Code-First Approach
This article provides an in-depth exploration of two primary methods for implementing unique constraints in Entity Framework Core code-first development: Fluent API configuration and index attributes. Through detailed code examples and comparative analysis, it explains the implementation of single-field and composite-field unique constraints, along with best practice choices in real-world projects. The article also discusses the importance of data integrity and provides specific steps for migration and application configuration.
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Resolving Type.GetType Returning null: In-depth Analysis of Type Lookup Mechanisms in C# Reflection
This article provides a comprehensive analysis of common reasons why Type.GetType returns null in C# and presents effective solutions. By examining the usage scenarios of assembly-qualified names with detailed code examples, it explains best practices for type lookup across different assemblies. The paper also compares multiple alternative approaches, including methods for iterating through all assemblies in the current application domain, helping developers master core reflection type lookup technologies.
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Two Approaches for Object Type Checking in VB.NET: GetType Method vs TypeOf Operator
This article provides an in-depth analysis of two fundamental approaches for object type checking in VB.NET: the GetType method and the TypeOf operator. Through a practical scenario involving multiple web control objects, it explains how to correctly use GetType() Is GetType(TypeName) for exact type matching and TypeOf Obj Is TypeName for compatibility checking. The article compares the differences, appropriate use cases, and provides code examples with best practices to help developers avoid common type checking errors.
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Understanding .NET Assemblies: The Fundamental Building Blocks of .NET Applications
This comprehensive technical article explores .NET assemblies, the fundamental deployment units in the .NET framework. We examine their core definition as precompiled code chunks executable by the .NET runtime, discuss different assembly types including private, shared/public assemblies stored in the Global Assembly Cache, and satellite assemblies for static resources. The article provides detailed explanations of assembly structure, deployment scenarios, and practical implementation considerations with code examples demonstrating assembly usage patterns in real-world applications.