Can't connect to database

namespace OnlineReportSystem.Admin
{
    public partial class AdminRagistration : System.Web.UI.Page
    {
        SqlConnection con = new SqlConnection("Data Source=(LocalDB)\v11.0;AttachDbFilename=C:\\Users\\Avani\\Documents\\\\\\mynewdb.mdf;Integrated Security=True;Connect Timeout=30;");
        protected void Page_Load(object sender, EventArgs e)
        {
            
        }

        protected void btnNext1_Click(object sender, EventArgs e)
        {
           // Response.Write(TabContainer1.ActiveTabIndex.ToString());
            TabContainer1.ActiveTab = TabContainer1.Tabs[TabContainer1.ActiveTabIndex + 1];
        }

        protected void btnCreateSchema_Click(object sender, EventArgs e)
        {
            SqlCommand cmd = new SqlCommand();
            cmd.CommandText = "Create table " + txtSchema.Text + ";";
            cmd.CommandType = CommandType.Text;
            try
            {
                using (con)
                {
                    con.Open();
                    cmd.ExecuteNonQuery();
                    con.Close();
                    Response.Write("successfull");
                }
            }
            catch (Exception ex)
            {
                Response.Write(ex);
            }
        }
    }
}