Procedure or function has too many arguments specified.

ALTER PROCEDURE [dbo].[AddTrainingRoomRq]

@req_start_date DateTime,
@req_end_date DateTime,
@req_times text,
@requestor_name text,
@requestor_phone text,
@requestor_mail_symbol text,
@requestor_email text,
@class_name text,
@user_num text,
@other_software text,
@internet_access bit,
@intranet_access bit,
@other_logons bit,
@other_logon_list text,
@additional_comments varchar (500),
@Result nvarchar (500) output

AS
BEGIN

Declare 

@ClassID int

Set @ClassID = 	(SELECT CAST(RAND() * 1000000000 AS INT) AS [RandomNumber])

INSERT INTO cal_tr_requests
           (ClassID, req_start_date, req_end_date, req_times, requestor_name, requestor_phone, requestor_mail_symbol, requestor_email, class_name, user_num, other_software, 
		   internet_access, intranet_access, other_logons, other_logon_list, additional_comments, date_of_req)
VALUES        (@ClassID,@req_start_date,@req_end_date,@req_times,@requestor_name,@requestor_phone,@requestor_mail_symbol,@requestor_email,@class_name,@user_num,@other_software,
              @internet_access,@intranet_access,@other_logons,@other_logon_list,@additional_comments,getdate())

Set @Result = Convert(nvarchar,@ClassID)

END

<pre lang="c#"{
    public partial class trainingroom : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            String strSysDt = Convert.ToString(System.DateTime.Now);
        }

        protected void lbInsert_Click(object sender, EventArgs e)
        {
            string strReqNm = ((TextBox)fvAddBookingInfo.FindControl("txtReqName")).Text;
            string strPhone = ((TextBox)fvAddBookingInfo.FindControl("txtPhone")).Text;
            string strMailSymbol = ((TextBox)fvAddBookingInfo.FindControl("txtMailSym")).Text;
            string strEmail = ((TextBox)fvAddBookingInfo.FindControl("txtEmail")).Text;
            string strFirstDt = ((TextBox)fvAddBookingInfo.FindControl("txtFirstDt")).Text;
            string strLastDt = ((TextBox)fvAddBookingInfo.FindControl("txtLastDt")).Text;
            string strUseTime = ((TextBox)fvAddBookingInfo.FindControl("txtUseTime")).Text;
            string strClassTy = ((TextBox)fvAddBookingInfo.FindControl("txtClass")).Text;
            string strNumOfUsr = ((TextBox)fvAddBookingInfo.FindControl("txtNumOfUsr")).Text;
            string strOtherSW = ((TextBox)fvAddBookingInfo.FindControl("txtOtherSW")).Text;
            CheckBox ckInternet = (CheckBox)fvAddBookingInfo.FindControl("cbInternet");
            CheckBox ckIntranet = (CheckBox)fvAddBookingInfo.FindControl("cbIntranet");
            CheckBox ckOthrLog = (CheckBox)fvAddBookingInfo.FindControl("cbOtherLog");
            string strListOthLog = ((TextBox)fvAddBookingInfo.FindControl("txtOtherLogList")).Text;
            string strComment = ((TextBox)fvAddBookingInfo.FindControl("txtComment")).Text;
            String strSysDt = Convert.ToString(System.DateTime.Now);

            SqlConnection conn = new SqlConnection();
            SqlCommand cmd = new SqlCommand();
            conn.ConnectionString = System.Configuration.ConfigurationManager.ConnectionStrings["CFMAppsConnectionString"].ConnectionString;
            cmd.Connection = conn;
            cmd.CommandText = "AddTrainingRoomRq";
            cmd.CommandType = System.Data.CommandType.StoredProcedure;
            cmd.Parameters.Add("@requestor_name", SqlDbType.NVarChar).Value = strReqNm;
            cmd.Parameters.Add("@requestor_phone", SqlDbType.NVarChar).Value = strPhone;
            cmd.Parameters.Add("@requestor_mail_symbol", SqlDbType.NVarChar).Value = strMailSymbol;
            cmd.Parameters.Add("@requestor_email", SqlDbType.NVarChar).Value = strEmail;
            cmd.Parameters.Add("@req_start_date", SqlDbType.DateTime).Value = strFirstDt;
            cmd.Parameters.Add("@req_end_date", SqlDbType.DateTime).Value = strLastDt;
            cmd.Parameters.Add("@req_times", SqlDbType.NVarChar).Value = strUseTime;
            cmd.Parameters.Add("@class_name", SqlDbType.NVarChar).Value = strClassTy;
            cmd.Parameters.Add("@user_num", SqlDbType.NVarChar).Value = strNumOfUsr;
            cmd.Parameters.Add("@other_software", SqlDbType.NVarChar).Value = strOtherSW;
            cmd.Parameters.Add("@other_logon_list", SqlDbType.NVarChar).Value = strListOthLog;
            cmd.Parameters.Add("@additional_comments", SqlDbType.NVarChar).Value = strComment;
            cmd.Parameters.Add("@date_of_req", SqlDbType.DateTime).Value = strSysDt;
            if (ckInternet.Checked)
            {
                cmd.Parameters.Add("@internet_access", SqlDbType.Bit).Value = 1;
            }
            else
            {
                cmd.Parameters.Add("@internet_access", SqlDbType.Bit).Value = 0;
            }
            if (ckIntranet.Checked)
            {
                cmd.Parameters.Add("@intranet_access", SqlDbType.Bit).Value = 1;
            }
            else
            {
                cmd.Parameters.Add("@intranet_access", SqlDbType.Bit).Value = 0;
            }
            if (ckOthrLog.Checked)
            {
                cmd.Parameters.Add("@other_logons", SqlDbType.Bit).Value = 1;
            }
            else
            {
                cmd.Parameters.Add("@other_logons", SqlDbType.Bit).Value = 0;
            }
            //cmd.Parameters.Add("@Result", SqlDbType.NVarChar, 500).Direction = ParameterDirection.Output;
            //cmd.Parameters("@Result").Direction = ParameterDirection.Output;
            SqlParameter outPutParameter = new SqlParameter();
            outPutParameter.ParameterName = "@Result";
            outPutParameter.SqlDbType = System.Data.SqlDbType.NVarChar;
            outPutParameter.Size = 500;
            outPutParameter.Direction = System.Data.ParameterDirection.Output;
            cmd.Parameters.Add(outPutParameter);
            
            conn.Open();
            cmd.ExecuteNonQuery();
            //cmd.ExecuteScalar();           
            conn.Close();
            string Result = outPutParameter.Value.ToString();
            lblResultMsg.Text = Result;
            //lblResultMsg.Text = cmd.Parameters["@Result"].Value.ToString();

        }

    }
}>