How to pass selected dropdown value from view to controller?

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C#

Dear All,
How can I Pass the Value from the View to Controller i.e.
I have a static Dropdown which I have created as follows.

1) Controller Code

var list = new SelectList(new[] 
                {
                    new { ID = "1", Name = "name1" },
                    new { ID = "2", Name = "name2" },
                    new { ID = "3", Name = "name3" },
                },
                "ID", "Name", 1);

                ViewData["list"] = list;

2) In My View I am binding the Dropdown as follows:
@Html.DropDownList("list", ViewData["list"] as SelectList)

how can I get the selected value of the dropdown from view and pass it to a controller?

I tried the following but it did not work.

string sTest = Request.Form["list"].ToString();

What I have tried:

string sTest = Request.Form["list"].ToString();