What are some common mistakes when using collections in C#?

What are some common mistakes when using collections in C#?

Some common mistakes include not using the right collection type, failing to handle null values, and not considering performance.

Can you explain why choosing the right collection type is important?

Choosing the right collection type affects performance and memory usage. For example, using a List for frequent insertions can be inefficient.

What about handling null values?

Failing to handle null values can lead to runtime exceptions. Always check for null before accessing collection elements.

Are there any performance tips for using collections?

Yes, prefer using collections like HashSet for fast lookups and avoid unnecessary resizing of lists by initializing with a capacity.