Asp net core use both usedeveloperexceptionpage and custom logging


ASP.NET is a popular language used for web applications. One common question that developers often face is how to handle exceptions and logging in ASP.NET Core. In this article, we will explore how to use both the UseDeveloperExceptionPage middleware and custom logging in ASP.NET Core.

Using the UseDeveloperExceptionPage Middleware

The UseDeveloperExceptionPage middleware is a -in middleware in ASP.NET Core that provides a detailed error page for developers during the development phase. It displays detailed exception information, stack , and other useful debugging information.

To use the UseDeveloperExceptionPage middleware, you need to add it to the method in the Startup.cs file:

public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
    if (env.IsDevelopment())
    // Other middleware configurations

By adding this middleware, ASP.NET Core will display detailed error information when an exception occurs during development. However, it is important to note that this middleware should not be used in environments as it may expose sensitive information to users.

Custom Logging in ASP.NET Core

While the UseDeveloperExceptionPage middleware is useful during development, it is not suitable for production environments. In production, it is to use custom logging to handle exceptions and log relevant information.

ASP.NET Core provides a flexible logging that allows developers to log exceptions and other information to various targets such as files, databases, or external services. Here's an of how to configure custom logging in ASP.NET Core:

public void Configure(IApplicationBuilder app, IWebHostEnvironment env, ILoggerFactory loggerFactory)
    // Other middleware configurations

    loggerFactory.AddFile("logs/myapp-{Date}.txt"); // Example: Logging to a file


In the above example, we are using the ILoggerFactory interface to configure custom logging. Here, we are adding a file logger that logs messages to a file named myapp-{Date}.txt. You can customize the logging configuration on your requirements.


In this article, we explored how to handle exceptions and logging in ASP.NET Core. We learned about the UseDeveloperExceptionPage middleware, which provides detailed error information during development, and the importance of using custom logging in production environments. By using both approaches, developers can effectively handle exceptions and log relevant information in their ASP.NET Core applications.

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