PictureBox.Dispose(Boolean) 方法


释放由 PictureBox 占用的非托管资源,还可以另外再释放托管资源。Releases the unmanaged resources used by the PictureBox and optionally releases the managed resources.

 override void Dispose(bool disposing);
protected override void Dispose (bool disposing);
override this.Dispose : bool -> unit
Protected Overrides Sub Dispose (disposing As Boolean)



true 则释放托管资源和非托管资源;为 false 则仅释放非托管资源。true to release managed and unmanaged resources; false to release unmanaged resources only.


此方法由公共 Dispose() 方法和 Finalize 方法调用。This method is called by the public Dispose() method and the Finalize method. Dispose() 调用受保护的 Dispose(Boolean) 方法,并将 disposing 参数设置为 trueDispose() invokes the protected Dispose(Boolean) method with the disposing parameter set to true. FinalizeDispose在设置为的情况调用 disposing falseFinalize invokes Dispose with disposing set to false.

disposing 参数为 true 时,此方法释放该 PictureBox 引用的、由任何托管对象持有的全部资源。When the disposing parameter is true, this method releases all resources held by any managed objects that this PictureBox references. 此方法调用每个引用对象的 Dispose() 方法。This method invokes the Dispose() method of each referenced object.


Dispose 可以由其他对象多次调用。 Dispose can be called multiple times by other objects. 当重写时, Dispose(Boolean) 请注意不要引用先前在调用时已释放的对象 DisposeWhen overriding Dispose(Boolean) be careful not to reference objects that have been previously disposed of in an earlier call to Dispose. 有关如何实现的详细信息 Dispose(Boolean) ,请参阅 [实现 Dispose 方法](/dotnet/standard/garbage-collection/implementing-dispose)。For more information about how to implement Dispose(Boolean), see [Implementing a Dispose Method](/dotnet/standard/garbage-collection/implementing-dispose).

有关和的详细 Dispose 信息 Finalize() ,请参阅 清理非托管资源重写 Finalize 方法For more information about Dispose and Finalize(), see Cleaning Up Unmanaged Resources and Overriding the Finalize Method.