how to allow Different user to access website and deny all other users in ASP.NET?

Question

This example shows you how to check given input contains only numbers (digits) or not using regular expression in asp.net and c#.

Regular expression
string strRegexpNumber = @"^[0-9 ]*$";

Answer 1

In this situation we need to write the code in web.config file like this

<configuration>
<system.web>
<authorization>
<allow users="Shivaranjini"/>  <!-- It will allow only Shivaranjini-->
<deny users="*"/>  <!--Deny others -->
</authorization>
</system.web>
</configuration>

If we observe above code it will allow only user “sathya” and deny all other users to access that application. If we want to give permission for more users just add usernames separated with comma like “Radhika,Swathi,Aishwarya,etc”