How to get database tables using asp.net

public static List<string> GetDBTables(string connectionString)
{
    using (SqlConnection con = new SqlConnection(connectionString))
    {
        con.Open();
        DataTable dtschema = con.GetSchema("Tables");
        List<string> TableNames = new List<string>();
        foreach (DataRow row in dtschema.Rows)
        {
            TableNames.Add(row[2].ToString());
        }
        return TableNames;
    }
}