How to Handle Exceptions in ASP.NET Core?

Exception Handling in ASP.NET Core allows developers to capture and manage errors in a controlled way. Proper handling improves user experience, debugging, and app reliability. ASP.NET Core provides built-in middleware and developer tools for handling exceptions.

Key Features:

• Middleware for global exception handling
• Supports custom error pages
• Integrates with logging and monitoring
• Works with MVC, Razor Pages, and APIs
• Helps maintain app stability and security

Example – Using Middleware:

var app = builder.Build();

if (app.Environment.IsDevelopment())
{
    app.UseDeveloperExceptionPage();
}
else
{
    app.UseExceptionHandler("/Home/Error");
}

app.Run();

Controller with try-catch:

public IActionResult Index()
{
    try
    {
        // Code that may throw exception
    }
    catch(Exception ex)
    {
        // Handle exception
        return Content($"Error: {ex.Message}");
    }
}

Exception Handling in ASP.NET Core ensures applications remain robust, provide meaningful error information, and maintain security during runtime errors.

Citations:

• Learn more on Savanka
• Official ASP.NET Core Documentation