//[定位]
//滑块元素
var wrapper = driver.FindElement(By.XPath("/html/body/div/div[1]/div[1]/div[2]"));
// 定义拖动的轨迹
Actions action = new Actions(driver);
action.ClickAndHold(wrapper);
//action.MoveToElement(driver.FindElement(By.XPath("/html/body/div/div[1]/div[1]/div[4]")), 1230,0);
action.MoveByOffset(350,0);
action.Release();
// 执行拖动
action.Build().Perform();
System.Threading.Thread.Sleep(1000);