Can You Force Garbage Collection in C#?

Garbage collection in C#: Enforcement?

During the interview, you may encounter questions about forcing garbage collection in C#. This article delves into this topic to provide you with a comprehensive answer.

Can I force garbage collection manually?

Although garbage collection in C# is an automated process, it can be explicitly forced to run. However, it is important to note that manually invoking garbage collection is generally not recommended.

To force manual garbage collection, you can use the following method:

1. Call GC.Collect():

<code class="language-c#">GC.Collect();</code>

This method starts garbage collection. However, it is crucial that after calling this method, GC.WaitForPendingFinalizers() should be called to ensure that all finalizers have finished executing.

2. Call GC.WaitForPendingFinalizers():

<code class="language-c#">GC.WaitForPendingFinalizers();</code>

This method waits for all finalizers to complete before memory cleanup can occur. It should be called after GC.Collect() to ensure proper cleanup.

Warning:

Be careful when calling garbage collection manually. Unnecessary or premature garbage collection can disrupt program performance and cause unpredictable behavior. Use this method only when absolutely necessary (for example, for testing purposes).

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