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The User.Identity.Name usually comes from Windows Login.<br />
Here are a few links about using cookies in C#<br />
<a href="http://www.csharphelp.com/archives/archive179.html" rel="ugc">http://www.csharphelp.com/archives/archive179.html</a><br />
<a href="http://www.java2s.com/Code/ASP/Session-Cookie/CreateandretrieveCookiedataC.htm" rel="ugc">http://www.java2s.com/Code/ASP/Session-Cookie/CreateandretrieveCookiedataC.htm</a><br />
<a href="http://www.codeproject.com/KB/aspnet/cookies_in_c_.aspx" rel="ugc">http://www.codeproject.com/KB/aspnet/cookies_in_c_.aspx</a>
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The User.Identity.Name usually comes from Windows Login.
Here are a few links about using cookies in C#
http://www.csharphelp.com/archives/archive179.html [http://www.csharphelp.com/archives/archive179.html]
http://www.java2s.com/Code/ASP/Session-Cookie/CreateandretrieveCookiedataC.htm [http://www.java2s.com/Code/ASP/Session-Cookie/CreateandretrieveCookiedataC.htm]
http://www.codeproject.com/KB/aspnet/cookies_in_c_.aspx [http://www.codeproject.com/KB/aspnet/cookies_in_c_.aspx]

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I have a web page and service that is hit alot and I need to know if the user is signed in and which user is signed in. &nbsp;I don't want to hit the database every single time so I was hoping I could extract this from the cookie while in c# code behind? &nbsp;Can someone please elaborate or point me to some link that does?
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I have a web page and service that is hit alot and I need to know if the user is signed in and which user is signed in.  I don't want to hit the database every single time so I was hoping I could extract this from the cookie while in c# code behind?  Can someone please elaborate or point me to some link that does?

Does User.Identity.Name get its value from a cookie or from the datasource?

The .NET Framework is not specific to any one programming language; rather, it includes a library of functions that allows developers to rapidly build applications. Several supported languages include C#, VB.NET, C++ or ASP.NET.

.NET Programming

C# is an object-oriented programming language created in conjunction with Microsoft’s .NET framework. Compilation is usually done into the Microsoft Intermediate Language (MSIL), which is then JIT-compiled to native code (and cached) during execution in the Common Language Runtime (CLR).