Скачать или смотреть Mapping virtual path to physical path using Server MapPath method Example Part 20

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In this video we will learn about the Practical use of Server.MapPath() method with an example.

Tilde(~) symbol resolves to the root application directory, no matter how deep you are in the folder hierarchy. This is the advantage of using ~(tilde), over ..(2 Dots). The following code would work from any folder in our application.
DS.ReadXml(Server.MapPath("~/Data/Countries/Countries.xml"));

Where as, the following code will only work from folders, that are 2 levels deeper relative to the root directory of the application.
DS.ReadXml(Server.MapPath("../../Data/Countries/Countries.xml"));