@using (Html.BeginForm("Index", "Home", FormMethod.Get))
{
//Code Here
}
@using (Html.BeginForm("Search", "YOUR CONTROLLER", FormMethod.Post)){
<p> Title: @Html.TextBox("SearchString") <br />
<input type="submit" value="Filter" /></p>
}
call controller in acction ASP.NET MVC & ASP.NET Core