What is Exception Handling in ASP.NET Core?

Exception Handling in ASP.NET Core is the process of catching and managing errors that occur during application execution. Proper exception handling ensures that applications remain stable, secure, and user-friendly. ASP.NET Core provides middleware and built-in features to handle exceptions globally.

Key Features:

• Global exception handling using middleware
• Provides detailed error pages in development
• Logs errors for debugging and monitoring
• Custom error pages for production
• Supports try-catch blocks for local handling

Example:
Using middleware for global exception handling in Program.cs:

if (!app.Environment.IsDevelopment())
{
    app.UseExceptionHandler("/Home/Error");
}
app.UseStatusCodePagesWithReExecute("/Home/Error", "?statusCode={0}");

A simple try-catch example in a controller:

public IActionResult Index()
{
    try
    {
        // Some risky operation
    }
    catch(Exception ex)
    {
        _logger.LogError(ex, "Error occurred in Index.");
        return View("Error");
    }
    return View();
}

Exception handling in ASP.NET Core ensures graceful error management, improved user experience, and easier debugging.

Citations:

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