The Problem: Debugging Blindness

When debugging complex collections in Visual Studio, the default watch window often displays only the object's namespace and class name (e.g., {MyCompany.LMS.Models.CourseClass}). This forces developers to manually expand every single item in a list to find specific data like IDs, names, or status codes. This repetitive clicking disrupts mental flow and significantly increases the time required to identify the state of an application.

The Solution: The DebuggerDisplay Attribute

Instead of accepting this default behavior, you can use the [DebuggerDisplay] attribute in C#. By decorating your class with this attribute, you instruct the Visual Studio debugger to show a custom string representation of the object whenever it appears in the watch, locals, or autos windows.

Implementation Example

To implement this, add the attribute above your class definition:

[DebuggerDisplay("Class {ClassCode}: {Title} ({Instructor}) - {StudentCount} Students")]
public class CourseClass
{
    public string ClassCode { get; set; }
    public string Title { get; set; }
    public string Instructor { get; set; }
    public int StudentCount { get; set; }
}

By referencing the properties directly within the curly braces inside the attribute string, the debugger will automatically resolve those values. This transforms a generic list of objects into a readable summary, allowing you to scan data instantly without ever needing to click the expand icon.