Baumer工业相机堡盟工业相机如何在C#平台使用BGAPI SDK实现相机资源的正确释放（C#）

private void buttonExit_Click(object sender, EventArgs e)
{
    if (pDevice != null)
    {
        try
        {
          //执行相机关闭指令
            if (pDevice.RemoteNodeList.GetNodePresent("AcquisitionAbort"))
                pDevice.RemoteNodeList["AcquisitionAbort"].Execute();
            pDevice.RemoteNodeList["AcquisitionStop"].Execute();
        }
        catch (BGAPI2.Exceptions.IException ex)
        {
            string str19;
            str19 = string.Format("ExceptionType:{0}! ErrorDescription:{1} in function:{2}", ex.GetType(), ex.GetErrorDescription(), ex.GetFunctionName());
            MessageBox.Show(str19);
        }
    }
    if (pDataStream != null & pBufferList != null)
    {
        try
        {
            pDataStream.StopAcquisition();
            pBufferList.DiscardAllBuffers();
        }
        catch (BGAPI2.Exceptions.IException ex)
        {
            string str20;
            str20 = string.Format("ExceptionType:{0}! ErrorDescription:{1} in function:{2}", ex.GetType(), ex.GetErrorDescription(), ex.GetFunctionName());
            MessageBox.Show(str20);
        }
    }
    if (pDataStream != null)
    {
        try
        {
          //取消注册事件
            pDataStream.UnregisterNewBufferEvent();
            pDataStream.RegisterNewBufferEvent(BGAPI2.Events.EventMode.UNREGISTERED);
            BGAPI2.Events.EventMode currentEventMode = pDataStream.EventMode;
        }
        catch (BGAPI2.Exceptions.IException ex)
        {
            string str21;
            str21 = string.Format("ExceptionType:{0}! ErrorDescription:{1} in function:{2}", ex.GetType(), ex.GetErrorDescription(), ex.GetFunctionName());
            MessageBox.Show(str21);
        }
    }
    if (pBufferList != null)
    {
        try
        {
            while (pBufferList.Count > 0)
            {
                pBuffer = pBufferList.Values.First();
                pBufferList.RevokeBuffer(pBuffer);
            }
            //关闭相机的数据流
            pDataStream.Close();
            //关闭相机的设备
            pDevice.Close();
            //关闭相机连接的网口
            pInterface.Close();
            //关闭相机连接的实例类
            pSystem.Close();
            //释放相机连接类的资源
            this.Close();
        }
        catch (BGAPI2.Exceptions.IException ex)
        {
            string str22;
            str22 = string.Format("ExceptionType:{0}! ErrorDescription:{1} in function:{2}", ex.GetType(), ex.GetErrorDescription(), ex.GetFunctionName());
            MessageBox.Show(str22);
        }
    }
}

if (pDataStream != null & pBufferList != null)
    {
        try
        {
            pDataStream.StopAcquisition();
            pBufferList.DiscardAllBuffers();
        }
        catch (BGAPI2.Exceptions.IException ex)
        {
            string str20;
            str20 = string.Format("ExceptionType:{0}! ErrorDescription:{1} in function:{2}", ex.GetType(), ex.GetErrorDescription(), ex.GetFunctionName());
            MessageBox.Show(str20);
        }
    }