小编Mah*_*hsa的帖子

我试图传递CommandParameter给我的方法ViewModel.这该怎么做？

private void Open(object sender)
{
    if (sender==this.objMainWindow.btnHistory)
    {
        objMainWindow.Container.Child = objHistory;
    }

    if (sender == this.objMainWindow.btnNew_Item)
    {
        objMainWindow.Container.Child = objNewItem;
    }

    if (sender == this.objMainWindow.btnSide_Effects)
    {
        objMainWindow.Container.Child = objSideEffect;
    }
}

这是我ViewModel想要通过的meyhod CommandParameter.我CommandParameter用于按钮.