Creating Client Context in SharePoint 2013 CSOM

Creating Client Context in SharePoint 2013 CSOM

 private static ClientContext spAuthentication(string path,string username, string pwd)
        {
            ClientContext ctx = new ClientContext(path);
            SecureString secStr = new SecureString();
            if (pwd.Length > 0)
            {
                foreach (var c in pwd.ToCharArray())
                {
                    secStr.AppendChar(c);
                }
            }
            ctx.Credentials = new SharePointOnlineCredentials(username, secStr);
            return ctx;
        }