C# call SQL stored procedure

using System.Data.SqlClient;
using System.Data;

string connStr = "Data Source=(local);Initial Catalog=SinoPacDocDB;Persist Security Info=True;User ID=sa;Password=sa";
        SqlConnection conn = new SqlConnection(connStr);


        SqlCommand cmd = new SqlCommand("Sp_Doc_MyDoc", conn);

        cmd.CommandType = CommandType.StoredProcedure;
        cmd.Parameters.AddWithValue("@Sel_PageSize", 10);
        cmd.Parameters.AddWithValue("@Sel_PageIndex", 0);
        cmd.Parameters.AddWithValue("@UserCode", "103190");

        conn.Open();

        SqlDataAdapter ad = new SqlDataAdapter(cmd);
        DataSet ds = new DataSet();
        ad.Fill(ds);
       

        conn.Close();