How can I get url referrer in asp net core mvc

Introduction

ASP.NET is a popular programming language used for building web applications. One common question that developers often encounter is how to get the URL referrer in ASP.NET Core MVC. In this article, we will explore different to solve this problem and provide examples to illustrate each solution.

Solution 1: the Request object

The Request object in ASP.NET Core MVC provides a way to various information the incoming HTTP request. To get the URL referrer, you can use the Request.Headers and retrieve the value of the “Referer” header.


string referrer = Request.Headers["Referer"].ToString();

This code snippet retrieves the value of the “Referer” header and stores it in the referrer variable. You can then use this variable to perform any necessary operations based on the referrer URL.

Solution 2: Using the HttpContext object

The HttpContext object in ASP.NET Core MVC provides access to the HTTP , including the request and response objects. You can use the HttpContext.Request property to access the incoming request and retrieve the URL referrer.


string referrer = HttpContext.Request.Headers["Referer"].ToString();

This code snippet is to the previous solution but uses the HttpContext.Request property of the Request object. Both approaches achieve the same result.

Solution 3: Using the UrlReferrer property

In ASP.NET Core MVC, you can also directly access the URL referrer using the UrlReferrer property of the HttpRequest object. This property returns a Uri object representing the referrer URL.


Uri referrer = Request.UrlReferrer;
string referrerUrl = referrer != null ? referrer.ToString() : string.Empty;

This code snippet retrieves the URL referrer using the UrlReferrer property and stores it in the referrer variable. The referrer URL is then converted to a string and assigned to the referrerUrl variable. If the referrer is null, an empty string is assigned instead.

Conclusion

Getting the URL referrer in ASP.NET Core MVC can be achieved using various approaches. you choose to use the Request object, HttpContext object, or the UrlReferrer property, the end result is the same. By understanding these different solutions, you can effectively retrieve the referrer URL and utilize it in your web application as needed.

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