.NET 4.5 Reviews & Product Details

.NET Framework 4.5 is a comprehensive and consistent programming model developed by Microsoft for building applications with visually stunning user experiences, seamless and secure communication, and the ability to model a range of business processes. This version introduces significant enhancements that improve developer productivity and application performance. Key Features and Functionality: - Asynchronous Programming: Incorporates the `async` and `await` keywords, simplifying asynchronous code and enhancing application responsiveness. - Networking Enhancements: Adds support for WebSockets, enabling real-time, bidirectional communication between client and server. - ASP.NET Improvements: Introduces model binding for Web Forms, allowing for cleaner and more maintainable code. - Windows Presentation Foundation (WPF) Enhancements: Includes the new Ribbon control for rich user interfaces and improved performance when displaying large data sets. - Windows Communication Foundation (WCF) Updates: Simplifies configuration and supports multiple authentication modes on a single endpoint. - Windows Workflow Foundation (WF) Enhancements: Adds support for state machine workflows and improved designer features. Primary Value and Solutions Provided: .NET Framework 4.5 addresses the need for developers to create high-performance, scalable, and responsive applications across various platforms. By introducing asynchronous programming patterns, it allows applications to remain responsive under heavy workloads. The support for WebSockets and improved networking capabilities enable the development of modern web applications with real-time communication features. Enhancements in ASP.NET, WPF, WCF, and WF provide developers with powerful tools to build rich user interfaces, efficient communication systems, and complex workflows, thereby reducing development time and improving application maintainability.

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.NET 4.5 Community

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.NET 4.5 Reviews (69)

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Shruti S.

Software Developer

Small-Business (50 or fewer emp.)

11/26/2025

"Predictable, High-Performance Development with .NET"

4/5

What do you like best about .NET 4.5?

As a developer, what I appreciate the most about .NET is how predictable and comfortable it is to work with. Debugging is smooth, IntelliSense actually helps, and the framework gives me enough structure without boxing me in. I also love how much performance has improved in the recent .NET versions. Building APIs that actually feel fast without doing crazy optimizations is a huge plus. Review collected by and hosted on G2.com.

What do you dislike about .NET 4.5?

while documentation exists, real-world examples for new features often lag behind, so I end up digging through GitHub issues or blogs more than I’d like. Review collected by and hosted on G2.com.

What problems is .NET 4.5 solving and how is that benefiting you?

.NET helps me build reliable, maintainable applications without fighting the framework. It gives me consistency—whether I'm building APIs, background services, or internal tools, the development experience feels stable.Cross-platform support is a big win too. I deploy on Linux servers now without any headaches, something that wasn’t possible with the old .NET Framework days. Review collected by and hosted on G2.com.

Shruti S.

Software Tester

Information Technology and Services

Small-Business (50 or fewer emp.)

10/14/2025

".NET Framework 4.5: Stable and Reliable"

4/5

What do you like best about .NET 4.5?

I’ve used .NET Framework 4.5 mainly for developing Windows-based applications, and it’s been a very stable and reliable platform. The integration with Visual Studio makes coding and debugging much easier, especially for beginners like me. I also like how it handles memory and exceptions efficiently. Review collected by and hosted on G2.com.

What do you dislike about .NET 4.5?

Because this is an older version, it lacks the modern cross-platform capabilities found in .NET Core or more recent releases. Some of the libraries seem somewhat outdated, and the initial setup process can be a bit more time-consuming than with newer frameworks. However, after everything is configured, it operates smoothly. Review collected by and hosted on G2.com.

Mayank K.

SENIOR salesforce DEVELOPER

Small-Business (50 or fewer emp.)

1/8/2026

"Async/Await Revolutionizes Simplicity and Portability"

4.5/5

What do you like best about .NET 4.5?

The best ever feature introduced is the async and await functions, this made the asynchronous programs much simpler and its portable class of libraries which helped to share code across multiple channels Review collected by and hosted on G2.com.

What do you dislike about .NET 4.5?

While async or await was a great feature, it introduced complexity for developers unfamiliar with asynchronous programming as well as performance issues still persist. Review collected by and hosted on G2.com.

Rajesh D.

Staff Engineer

Enterprise (> 1000 emp.)

10/14/2025

".NET 4.5: SMOOTH ASYNC, , SOME BUMPS TOO"

4/5

What do you like best about .NET 4.5?

I really like the async and await features - they make writing asynchronous code much easier. The build -in zip compression is super handy for handling files. Also, the improved garbage collection helps apps run smoother and faster Review collected by and hosted on G2.com.

What do you dislike about .NET 4.5?

It still lacks full support for cross-platform development. Some older libraries and APIs are deprecated or limited. Also, debugging aync code can be tricky at times Review collected by and hosted on G2.com.

Mallika G.

Workforce Transformation

Mid-Market (51-1000 emp.)

10/26/2025

"Async/Await Boosts Productivity, But Cross-Platform Support Still Lags"

4/5

What do you like best about .NET 4.5?

I like .NET 4.5 for its improved performance and the introduction of async/await, which made asynchronous programming much simpler and more efficient. Review collected by and hosted on G2.com.

What do you dislike about .NET 4.5?

I dislike that .NET 4.5 still had limited cross-platform support and relied heavily on the Windows ecosystem, making deployment less flexible compared to newer .NET versions. Review collected by and hosted on G2.com.

Tomasz J.

Senior .NET Developer

Small-Business (50 or fewer emp.)

12/19/2023

"Old, but still used in many projects"

0.5/5

What do you like best about .NET 4.5?

For years I had to maintain and develop solutions built in .NET 3.5. So when I was able to switch to .NET 4 and .NET 4.5 I did it for almost every project. Now I still use .NET 4.5 in legacy projects, but as it is end of its life for many years Review collected by and hosted on G2.com.

What do you dislike about .NET 4.5?

The worst part is that it is end of life from 2016. Now the preferred framework is .NET 8 or at least .NET Framework 4.8 Review collected by and hosted on G2.com.

What problems is .NET 4.5 solving and how is that benefiting you?

It all depends on the client's requirements. The biggest problem I was able to solve with .NET 4.5 was multi-system authentication. I had to build an application (proxy) that transferred files between multiple systems. Each system had a custom security policy, one based on Linux, one on Active Directory. Each user had rea/write or only read or only write permissions. The entire solution was based on streams so it was very efficient. Review collected by and hosted on G2.com.

Charita M.

Data Engineer

Mid-Market (51-1000 emp.)

1/25/2024

"Review of .Net 4.5"

5/5

What do you like best about .NET 4.5?

.NET 4.5 introduced several improvements and features, such as asynchronous programming with the `async` and `await` keywords, enhancements in ASP.NET, and improvements in the Entity Framework. These additions aimed to make development more efficient and improve performance. Keep in mind that newer versions of .NET may have been released since then, so it's advisable to check the latest documentation for the most up-to-date information. Review collected by and hosted on G2.com.

What do you dislike about .NET 4.5?

.NET 4.5 is a robust framework, but some developers found the learning curve for asynchronous programming challenging. Additionally, the initial lack of support for some modern language features led to certain limitations. Review collected by and hosted on G2.com.

Ashutosh S.

Consultant

Enterprise (> 1000 emp.)

1/8/2024

"Comebacks after comebacks"

4.5/5

What do you like best about .NET 4.5?

My favourite additions are the ones related to Responsive UI and web app scalability features as a part of this one. Also, this version makes writing synchronous code way easier. Happy to be a proud .Net Dev 👏👏 Review collected by and hosted on G2.com.

What do you dislike about .NET 4.5?

Nothing as such. Would definitely add it here once i find anything that i do not like Review collected by and hosted on G2.com.

Nishedh J.

Senior Technology Manager / Lead .Net developer

Small-Business (50 or fewer emp.)

12/22/2020

".Net Review"

5/5

What do you like best about .NET 4.5?

Easy to use and flexible. helps to keeps up to date. one of the best option to develop easily. Review collected by and hosted on G2.com.

What do you dislike about .NET 4.5?

currently I do not have such experience but it seems .net is not completely open source Review collected by and hosted on G2.com.

Bhawna G.

Mid-Market (51-1000 emp.)

1/29/2024

"A new Era of .NET - Get better with 4.5"

4/5

What do you like best about .NET 4.5?

Intellisense has considerably improved with 4.5. The compatibility is wider compared to Framework 4. It's a complete solution including code, UI and scalability. Caching has been upgraded and is more reliable in terms of performance and temporary storage. Review collected by and hosted on G2.com.

What do you dislike about .NET 4.5?

OOP entity Framework might be obsolete in near future and may not support the emerging Technologies. The cost of the Framework is increasing. The Framework stability isn't something we can totally rely on Review collected by and hosted on G2.com.