How to get values from the querystring in ASP.NET Core?
Dung Do Tien
Aug 18 2020
907
I am building an application using Asp.net Core MVC 3.1. I have created a middleware to filter login and I want to get username param from URL. I use code as below:
string username = HttpContext.Request.Query["username"];
The problem is that HttpContext.Request.Query["username"] doesn't return a string.
So how to get values from the query string in ASP.NET Core? Thanks for any suggestions!!!
Have 1 answer(s) found.
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S1
Sandeep Kumar Aug 18 2020
You need to cast it to string. You can replace your code to as below:
string username = HttpContext.Request.Query["username"].ToString();You can use this way inside a html page, middleware, logic business layer.
But if get query string inside an action of a controller you can get it throught parameter, as below :
[HttpGet] public IActionResult Login(string username) { // Variable username will hold value of query string from url return View(); }If you want to access querystring in view cshtm, you can use code below:
@{ var username = Context.Request.Query["username"].ToString(); }I hope this answer is helpful for you.
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