newbie .net question - variable that's equivalent of $_SESSION['SERVER_NAME']

I'm still new to .net....I'm trying to find the variable that prints the domain name that an aspx.cs file is currently executing from. I come from PHP land, and it has $_SERVER['SERVER_NAME'] or $_SERVER['HTTP_HOST']. What's the .net equivalent for those va开发者_如何学Criables?

Thanks

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You have all that in:

HttpContext.Current.Request.Url

In that object you have the Domain, AbsoluteUri, AbsolutePath, etc. Please see this question and this link for more references

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Request.ServerVariables["SERVER_NAME"] and Request.ServerVariables["HTTP_HOST"]