private void comboBoxTarget_SelectedValueChanged(object sender, EventArgs e)
{
if (null != propertyGridHostProperties.SelectedObject)
{
COMObject oldSelectedObject = propertyGridHostProperties.SelectedObject as COMObject;
propertyGridHostProperties.SelectedObject = null;
propertyGridHostProperties.Refresh();
oldSelectedObject.DisposeChildInstances();
}
propertyGridHostProperties.SelectedObject = ApplicationHandler.GetSelectedProxy(comboBoxTarget.SelectedIndex);
}