如何释放被占用的内存 [英] How to release the occupied memory

问题描述

我在我的项目一个主窗口，和许多其他的孩子寡妇内部的主。
我已经注意到了。当我打开主窗口占用的内存，1500K时为开一个子窗口，然后在内存占用6000K补充道。
当我打开第二个窗口做同样的。当我关闭两个子窗口占用的内存不会被释放。
所以，我要的是释放被占用的内存时，曾经我关闭子窗口。
我该怎么办呢？
请在vb.net如果可能的话有些code例如咨询我。
这个问题经常锯在本地网络上的计算机无法在我的电脑（计算机开发具有SQL服务器就可以了）。

I have a main window in my project, and numerous other child widows inside the main.
I have noticed that. When I open the main window occupies 1500K of memory, when open one child window then adds in occupied memory 6000K.
When I open the second window doing the same. When I close the two child windows the occupied memory is not released.
So What I want is to release the occupied memory when ever I close child windows.
How I can do that?
Please advice me with some code example in vb.net if it is possible.
This problem often sawing in the computers on the Local NET not in my computer (developer computer which has the SQL server on it).

推荐答案

使用所建议的Pranay会工作，因为它在默认情况下调用Dispose方法。其他明确你有打电话this.close（）在你的子窗体后打电话到this.dispose（）。但可以肯定你是不会关闭后使用子窗体元素或价值。由于处置将终于明白了一切。

Using as suggested by Pranay will work as it will by default call Dispose method. else explicitly you have to call this.dispose() after calling this.close() on your child forms. But be sure you are not going to use child form elements or value after close. Since dispose will finally clear everything.

MSDN 例如处置非托管资源

Imports System
Imports System.ComponentModel

' The following example demonstrates how to create
' a resource class that implements the IDisposable interface
' and the IDisposable.Dispose method.
Public Class DisposeExample

   ' A class that implements IDisposable.
   ' By implementing IDisposable, you are announcing that 
   ' instances of this type allocate scarce resources.
   Public Class MyResource
      Implements IDisposable
      ' Pointer to an external unmanaged resource.
      Private handle As IntPtr
      ' Other managed resource this class uses.
      Private component As component
      ' Track whether Dispose has been called.
      Private disposed As Boolean = False

      ' The class constructor.
      Public Sub New(ByVal handle As IntPtr)
         Me.handle = handle
      End Sub

      ' Implement IDisposable.
      ' Do not make this method virtual.
      ' A derived class should not be able to override this method.
      Public Overloads Sub Dispose() Implements IDisposable.Dispose
         Dispose(True)
         ' This object will be cleaned up by the Dispose method.
         ' Therefore, you should call GC.SupressFinalize to
         ' take this object off the finalization queue 
         ' and prevent finalization code for this object
         ' from executing a second time.
         GC.SuppressFinalize(Me)
      End Sub

      ' Dispose(bool disposing) executes in two distinct scenarios.
      ' If disposing equals true, the method has been called directly
      ' or indirectly by a user's code. Managed and unmanaged resources
      ' can be disposed.
      ' If disposing equals false, the method has been called by the 
      ' runtime from inside the finalizer and you should not reference 
      ' other objects. Only unmanaged resources can be disposed.
      Protected Overridable Overloads Sub Dispose(ByVal disposing As Boolean)
         ' Check to see if Dispose has already been called.
         If Not Me.disposed Then
            ' If disposing equals true, dispose all managed 
            ' and unmanaged resources.
            If disposing Then
               ' Dispose managed resources.
               component.Dispose()
            End If

            ' Call the appropriate methods to clean up 
            ' unmanaged resources here.
            ' If disposing is false, 
            ' only the following code is executed.
            CloseHandle(handle)
            handle = IntPtr.Zero

            ' Note disposing has been done.
            disposed = True

         End If
      End Sub

      ' Use interop to call the method necessary  
      ' to clean up the unmanaged resource.
      <System.Runtime.InteropServices.DllImport("Kernel32")> _
      Private Shared Function CloseHandle(ByVal handle As IntPtr) As [Boolean]
      End Function

      ' This finalizer will run only if the Dispose method 
      ' does not get called.
      ' It gives your base class the opportunity to finalize.
      ' Do not provide finalize methods in types derived from this class.
      Protected Overrides Sub Finalize()
         ' Do not re-create Dispose clean-up code here.
         ' Calling Dispose(false) is optimal in terms of
         ' readability and maintainability.
         Dispose(False)
         MyBase.Finalize()
      End Sub
   End Class

   Public Shared Sub Main()
      ' Insert code here to create
      ' and use the MyResource object.
   End Sub

End Class

（更新）[检查]

如果您的孩子有形式的签名。这些都是默认添加到一个表单。

If your child form has the signature. These are by default added to a form.

'Form overrides dispose to clean up the component list.
    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing Then
            If Not (components Is Nothing) Then
                components.Dispose()
            End If
        End If
    MyBase.Dispose(disposing)
End Sub

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