Finalize vs. Dispose in C#: When and How to Use These Methods?

Finalize and Dispose methods in C#: When and how to use these methods?

The purpose and usage of the purpose of Finalize and Dispose methods in C# is essential for effective memory management.

The difference between the difference between finalize and dispose

Finalize method (or destructor) automatically calls the object when destroying the object arrangement (GC). Its main purpose is to release non -hosting resources, such as file handle or network connection.

On the other hand, the Dispose method provides a controlling mechanism to release custody and non -hosting resources. When an object is no longer needed, it should be displayed.

Implementation final

Only when your class uses non -custody resources, can the finalize method. Otherwise, please follow the recommended mode:

​​To realize Dispose

<code class="language-csharp">public sealed class MyManagedClass : IDisposable
{
    public void Dispose()
    {
        // 释放托管资源
    }
}</code>

If your class uses non -hosting resources, please use the following mode:

The client's responsibility

<code class="language-csharp">public class MyUnManagedClass : IDisposable
{
    public void Dispose()
    {
        Dispose(true);
        GC.SuppressFinalize(this);
    }

    protected virtual void Dispose(bool disposing)
    {
        if (disposing)
        {
            // 释放托管资源
        }

        // 释放非托管资源
    }
}</code>

The client of such categories should call Dispose or use the USING statement to ensure the correct disposal:

Use webclient

Yes, webclient implements IDISPOSABLE because it uses non -hosting resources. To determine whether the class uses non -hosting resources, check its documents or use tools such as ILSPY to check its implementation.

<code class="language-csharp">using (MyUnManagedClass obj = new MyUnManagedClass())
{
    // 使用对象
}</code>

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