How to call generic handler with 2 parameters in webforms

Question

Hello everybody, I created a general handler which will display names of students. This handler has 2 parameters namely: SchoolCode and term. The first parameter is loaded in my webform on page load. The 2nd parameter is when I type the name of the student in the textbox. Please refer to my code snippet below,

public void ProcessRequest(HttpContext context)
        {
            string SchoolCode = context.Request["SchoolCode"] ?? "";
            string term = context.Request["term"] ?? "";
            List<string> studentName = new List<string>();
            using (SqlConnection con = DBCS.GetConString())
            {
                SqlCommand cmd = new SqlCommand("spDropdownList_Student", con);
                cmd.CommandType = CommandType.StoredProcedure;
                cmd.Parameters.AddWithValue("@SchoolCode", SchoolCode);
                cmd.Parameters.AddWithValue("@term", term);
                con.Open();
                SqlDataReader rdr = cmd.ExecuteReader();
                while (rdr.Read())
                {
                    studentName.Add(rdr["StudentDetails"].ToString());
                }
            }

            JavaScriptSerializer js = new JavaScriptSerializer();
            context.Response.Write(js.Serialize(studentName));
        }

Below is my stored proc:

 

ALTER PROCEDURE [dbo].[spDropdownList_Student]
    -- Add the parameters for the stored procedure here
    @SchoolCode nvarchar(50),
    @term nvarchar(50)
AS
BEGIN
    -- SET NOCOUNT ON added to prevent extra result sets from
    -- interfering with SELECT statements.
    SET NOCOUNT ON;

    -- Insert statements for procedure here
    SELECT
            [Fname] + ' ' + [Lname] + ' - ' + [NickName] as StudentDetails
    FROM [dbo].[tblStudentMaster]
    WHERE [SchoolCode] = @SchoolCode AND  [Fname] LIKE @term + '%'
    ORDER BY [Fname] ASC
END

 I tested my sp and it's working fine. Below also is the result:

 

 

Now, in my webforms, I made a jquery function to call the handler:

$(document).ready(function () {
            $('#MasterFileContentSection_txtStudentName').autocomplete({
                source: '/Handlers/StudentName.ashx'
            });
        });

but it didn't display the names of students.  I'm new jquery.