How to assign a string[] array values to a cookie

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C#3.5

I have a string array and it is filling by database and i want to assign its[string[] array] values to a cookie. Please Paste some code.
My code is --

Array ar_Driver = (Array)fn.Arr_Driver();
HttpCookie Driver = new HttpCookie("Driver");
Driver.Value = Convert.ToString(ar_Driver);
Driver.Expires = DateTime.Now.AddHours(1);
Response.Cookies.Add(Driver);