Cannot Switch to new browser Window after click button C# Selenium

Question

I have situation when click on button opens new browser window. I try switch to it new window this way :

driver.SwitchTo().Window(driver.WindowHandles.Last());

But It does not work. There is error

'System.Collections.ObjectModel.ReadOnlyCollection' does not contain a definition for 'Last' and no extension method 'Last' accepting a first argument of type 'System.Collections.ObjectModel.ReadOnlyCollection' could be found (are you missing a using directive or an assembly reference?)

What should I do?

Answer 1

尝试在下面使用：

driver.SwitchTo().Window(driver.WindowHandles.ToList().Last());