How to pass value of HTML textbox to actionmethod in ASP.NET MVC

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MVC

I have on action method in controller and i want to pass the value of textbox to controller but problem is that i cant pass the value is seem like null value in controller.
I have login button, has popup on nav bar it run on only index view but whenever i goes through other view and click on button popup shows and when putting username and pasword then click on login button it pass null values to controller

What I have tried:







<a href="@url.action("Login","Home",new{username,password})"



**controller**
public actionresult login(string username,string password){
return view();
}