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Given a list of students with properties Name and Score, how do you sort the list first by Score descending, then by Name ascending using LINQ?

hard🚀 Application Q15 of Q15

C Sharp (C#) - LINQ Fundamentals

Given a list of students with properties Name and Score, how do you sort the list first by Score descending, then by Name ascending using LINQ?

Astudents.OrderByDescending(s => s.Score).ThenBy(s => s.Name);

Bstudents.OrderBy(s => s.Score).OrderBy(s => s.Name);

Cstudents.OrderBy(s => s.Name).OrderByDescending(s => s.Score);

Dstudents.OrderByDescending(s => s.Name).ThenByDescending(s => s.Score);

Step-by-Step Solution

Solution:

Step 1: Understand multi-level sorting
To sort by multiple keys, use OrderBy or OrderByDescending for the first key, then ThenBy or ThenByDescending for the next keys.
Step 2: Apply correct order and directions
We want to sort by Score descending first, then by Name ascending, so use OrderByDescending(s => s.Score) followed by ThenBy(s => s.Name).
Final Answer:
students.OrderByDescending(s => s.Score).ThenBy(s => s.Name); -> Option A
Quick Check:
OrderByDescending + ThenBy for multi-level sort [OK]

Quick Trick: Use ThenBy after OrderBy for secondary sorting [OK]

Common Mistakes:

MISTAKES

Using multiple OrderBy calls instead of ThenBy
Mixing ascending and descending incorrectly
Sorting by wrong property order

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