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        private static string GetProviderAPN(string providerName)
        {
            if(providerName .Trim ()=="3")
            {
                return "ipc.three.com.hk";
            }

            if (providerName.Trim().ToLower () == "cmhk")
            {
                return "CMHK";
            }

            if (providerName.Trim().ToLower() == "smartone")
            {
                return "smartone";
            }

            return string.Empty;
        }

 private static string GetProfile(string PfName, string SubscriberID, string SimIccID, string HomeProviderName, string AccessString,string DisplayProviderName)
        {
               return  $@"<?xml version=""1.0""?>
<MBNProfile xmlns = ""http://www.microsoft.com/networking/WWAN/profile/v1"">
    <Name>{PfName}</Name>
	<IsDefault>true</IsDefault>
	<ProfileCreationType>UserProvisioned</ProfileCreationType>
	<SubscriberID>{SubscriberID}</SubscriberID>
	<SimIccID>{SimIccID}</SimIccID>
	<HomeProviderName>{HomeProviderName}</HomeProviderName>
	<ConnectionMode>auto</ConnectionMode>
	<Context>
		<AccessString>{AccessString}</AccessString>
		<Compression>DISABLE</Compression>
		<AuthProtocol>NONE</AuthProtocol>
	</Context>
	<DisplayProviderName xmlns = ""http://www.microsoft.com/networking/WWAN/profile/v2"">{DisplayProviderName}</DisplayProviderName>
</MBNProfile>
";
    }

 public static void AddProfile(string profileName)
       {
            try
            {
                XmlDocument xdoc = new XmlDocument();
                string profileString = System.IO.File.ReadAllText(Path.Combine(pfFolder, profileName));
                xdoc.LoadXml(profileString);
                string ProfileInfo = xdoc["MBNProfile"]["HomeProviderName"].InnerText +"/"+ xdoc["MBNProfile"]["Name"].InnerText +"/"+ xdoc["MBNProfile"]["SimIccID"].InnerText  ;
                AddProfileWithXML(xdoc.OuterXml);
                Global.LogLocalThingsInfo($"AddProfile:{ProfileInfo}");
            }
            catch(Exception ex )
            {
                Global.LogLocalThingsError(ex);
            }
        }

        public static void AddProfileWithXML(string xml)
        {
            try
            {   
                MbnConnectionProfileManager mbnConnProfileMgr = new MbnConnectionProfileManager();
                IMbnConnectionProfileManager mbnConnProfileMgrInterface = mbnConnProfileMgr as IMbnConnectionProfileManager;               
                mbnConnProfileMgrInterface.CreateConnectionProfile(xml);
            }
            catch (Exception ex)
            {
                Global.LogLocalThingsError(ex);
            }
        }

　Calling:

if(!string.IsNullOrEmpty (HomeProviderName))
                        {
                            uint id;
                            string DisplayProviderName = "3";
                            string PfName = DisplayProviderName;
                            string v = GetProfile(PfName, SubscriberID, SimIccID, HomeProviderName, AccessString, DisplayProviderName);
                            System.IO.File.WriteAllText(Path.Combine(Network.pfFolder, PfName), v);

                            message += " Pf is empty, Connect with new Profile:" + Environment.NewLine + v + Environment.NewLine;

                            Network.AddProfile(PfName);
                            conn.Connect(MBN_CONNECTION_MODE.MBN_CONNECTION_MODE_PROFILE, PfName, out id);
                        }