How to get user name using windows authentication in asp net

Introduction

ASP.NET is a popular programming used for developing web applications. One common requirement in web applications is to retrieve the user name of the currently logged-in user. In this article, we will explore how to this using Windows authentication in ASP.NET.

Enabling Windows Authentication

Before we can retrieve the user name, we need to Windows authentication in our ASP.NET application. To do this, we need to make in the web. file. Open the web.config file and locate the section. this section, add the following code:



This enables Windows authentication for our application.

Retrieving the User Name

Once Windows authentication is enabled, we can retrieve the user name using the User..Name . This property returns the user name in the format “domainusername”. To just the username, we can use the Substring method. Here's an example:


string userName = User.Identity.Name;
string usernameOnly = userName.Substring(userName.IndexOf("\") + 1);

In the above example, we first retrieve the user name using User.Identity.Name. Then, we use the Substring method to extract the username by finding the of the backslash character (“”) and adding 1 to it.

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