C#Selenium如何在不使用pageup/pgdn的情况下滚动可滚动的div,而不是整个网页

我试图滚动一个div,每当我到达滚动条底部时,它都会加载行。现在我通过使用PgUp和PgDn“滚动”div的滚动条来做到这一点,但我遇到了一个问题,即特定的div不接受PgUp/pgdown/home/end。如何使用C#和Selenium拖放滚动条?

这是我的pgup和pgdn代码:

private void ScrollTable(int scrollcount, string pageDirection, string delay)
                {
                    Actions actions = new Actions(DlkEnvironment.AutoDriver);
                    actions.MoveToElement(mTableElement);
                    for (int i = 1; i <= scrollcount; i++)
                    {
                       //if loading is not displayed/visible,
                       IsLoadingScreenIsDisplayed(delay);
                       //execute after waiting
                       switch (pageDirection.ToLower())
                       {
                           case "up":
                               actions.Click().SendKeys(Keys.PageUp).Perform();
                               break;
                           case "down":
                               actions.Click().SendKeys(Keys.PageDown).Perform();
                               break;
                           default:
                               throw new Exception("Invalid direction");
                       }   
                    }
                    Thread.Sleep(1000);
                }