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by Lama Barri
A library for packing / unpacking 7bit user data for SMS according to the GSM 03.38 standards.
by Yvan Rodrigues
Store and retrieve messages in a central repository with SMS using Twilio and ASP.NET.
by Carey Payette
This article will cover the development of a simple device that will text message the owner when the dryer cycle has ended.
by Daniel Padevet
Short code showing how to send an SMS from C# via TP-LINK TL-MR6400 LTE Router

Latest Articles

by Micah Ebohon
Consume SMS API from SMS provider in PHP app
by Ramv_OT
This article provides instructions on how to submit requests for sending faxes, SMS notifications, and email notifications using OpenText's REST APIs.
by BADGROOVY
A quick article on how to receive an SMS using RingCentral when a Philips HUE light in your home is turned on.
by Michael Haephrati
How to add the capability of sending text (SMS) messages from a desktop application

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Sms 

10 Oct 2012 by Lama Barri
A library for packing / unpacking 7bit user data for SMS according to the GSM 03.38 standards.
3 Jun 2015 by Yvan Rodrigues
Store and retrieve messages in a central repository with SMS using Twilio and ASP.NET.
28 Aug 2015 by Carey Payette
This article will cover the development of a simple device that will text message the owner when the dryer cycle has ended.
11 Jun 2016 by Daniel Padevet
Short code showing how to send an SMS from C# via TP-LINK TL-MR6400 LTE Router
5 May 2011 by fjdiewornncalwe
A quick search of CP articles showed this article. Although it is written in dotNet 1.0, I believe this code can be ported to any version of dotNet reasonable quickly. At minimum this article will give you a starting point with regards to approaching this.A POP3 Client in C# .NET[^]
16 Jan 2014 by agent_kruger
if there would be any free gateways every developer would have provided the facility and the big companies would have been ruined.
2 May 2016 by amatecki
How to use the SmsToolset library to send SMS over GSM network by using PDU format
13 Apr 2012 by Peteris Krumins
Last week I got a chance to try Clickatell's Communicator 2 service.
3 Jan 2013 by halabella
Send and Read SMS through a GSM Modem using AT Commands[^]Hope this helps.
29 Apr 2013 by Dave Kreskowiak
This isn't really the forum for your question as your question doesn't have anything to do with C# but, instead, everything to do with the internals of SCCM and its WMI classes. There's probably only two regular visitors around here who has done any work with SCCM.But, you got lucky as I'm...
14 Jan 2016 by snorkie
Why are you using a modem? If you're trying to perform SMS on the cheap, search email to text - Google Search[^]. Basically send an email to a SMS gateway that consists of @. Each major cell provider has one of these. The major drawback is not being able to receive replies.Or if you're...
12 Feb 2016 by Richard MacCutchan
Can't find any solution? I wonder what you searched for, Google found Sending SMS using .NET[^] in no time.
26 Apr 2020 by BADGROOVY
A quick article on how to receive an SMS using RingCentral when a Philips HUE light in your home is turned on.
3 Jul 2023 by Micah Ebohon
Consume SMS API from SMS provider in PHP app
26 Nov 2010 by Abhinav S
Seehttp://forums.asp.net/t/1191703.aspx[^]http://www.c4sms.com/codeExamples.asp[^]
18 Jan 2011 by Nish Nishant
Here are a couple of articles from Code Project:Sending SMS using .NET[^]How to Send SMS Messages from C# using an SQL Database[^]Most of the down votes on those articles seem to be from people pissed off to find that sms gateways are not always free or available in their country....
18 Jan 2011 by thatraja
Here you go dudesend sms mobile @ Codeproject[^]It's a FAQ, so you can browse those questions & answers(Also different kind of things/features there).
11 Feb 2011 by Smitha Nishant
I have fixed the link to the download file. You should be able to access it now.In future, please post these sort of questions in the forum under the article.Smitha
16 May 2011 by Kim Togo
Use AT commands[^] to send and receive SMS via your Nokia N70. Remember that it is using a diffent encoding (GSM default alphabet (GSM 03.38)[^]) where something like sending a "@" char is encoded as 0x00.Use AT+CSCS to set TE character set to support the correct encoding.AT+CSCS=? to list...
14 Oct 2011 by abintj
How to send bulk SMS to mobiles(all operators) in my Application???webservicex.net is not working..Do you know any sms sending gateways(free or paid)??If u know plz send links and codes...Do you know any sms sending webservices(working).Plz help me...Thanx in advance..
18 Jan 2012 by lovehacker
have you've tried send AT command using the hypertermal? as i noticed you need two user action to send sms using hypertermal.. which is AT+CMGS="desired number"(first user action) then type a message then press CTRL+Z to send it... so this is what happen to your button action... the first click...
21 Jan 2012 by Kim Togo
Check out Send and Read SMS through a GSM Modem using AT Commands[^]This can help you to get started :-)
28 Jan 2012 by theanil
A very goog cp article posted on it.How To Send and Receive SMS using GSM Modem[^]
28 Jan 2012 by Kim Togo
There are many articles that can help you, like Send and Read SMS through a GSM Modem using AT Commands[^].But if you are using GSMComm then why not look at the documentation for that library?Like "How-to" etc.Look at the website...
29 Jun 2012 by Tim Corey
First, I do not believe that the term crowdsourcing means what you think it does. What you are describing is more just group texting and group alerts. To do this, you could either subscribe to a service to do it for you (easy, efficient, and guaranteed) or you could build something...
22 Dec 2012 by OriginalGriff
Google is your friend: Be nice and visit him often. He can answer questions a lot more quickly than posting them here...A very quick search using your subject as the search term gave over 300,000 hits: Google[^]The top hit is an article from this very site: Send and Read SMS through a...
19 Jan 2013 by Logi Guna
What device? GSM or CDMA? What modem type?Nokia device has it's own AT+Command specifications, so you must obtain AT+Command documentation from hardware manufacturer.* Serial Port Using Visual Basic .NET and Windows* For more specific AT+Commands (Wavecom/GSM/CDMA), try google search...
26 Feb 2013 by Orcun Iyigun
Well seems like you have not bought an API from SMS sender provider here are some providers and their corresponding code examples:ViaNett[^]Ozeki[^]XML API[^]Good luck,OI
29 Apr 2013 by MitchG92_24
Hi All, The task i have been given is creating an application that adds a computer into a collection in System Center Configuration Manager 2012 through C#. (I'm using C# as there is certain limitations stopping me from using powershell).Using the SDK documentation - I have been supplied...
22 Jul 2013 by Thanks7872
Refer to these linksSend and Receive SMS in Asp.Net Using GSM Modem C# Code[^]How To Send and Receive SMS using GSM Modem[^]and a lot more hereSending SMS using gsm Modem-ASP.NET[^]Regards..:laugh:
30 Oct 2013 by Shashi_zen
Hi,I am developing an sms alert application in which i want to send SMS alert to the users, but i don't want to use free/paid sms gateway to send sms. Is there any web service who will use my phone number to send sms online, i means the sms charges will be deducted from my number ? This...
24 Dec 2013 by Zeeshan17
Hello Friends,I am building Application in Asp.net for Public grievances.One module of the project is for providing SMS facility to the users.That is suppose some user files a complaint or the website,he will get complaint id with which he can track his complaint.So the requirement is he...
13 Feb 2014 by Member 8207924
here is what I am using for Configuration Manager 2007...using System;using System.Collections.Generic;using System.IO;using Microsoft.ConfigurationManagement.ManagementProvider;using Microsoft.ConfigurationManagement.ManagementProvider.WqlQueryEngine;using...
2 May 2014 by TorstenH.
http://www.java-samples.com/sh...
2 Jun 2014 by BobJanova
I'm not aware of a library that does this, although it's definitely worth a search if you haven't already. It's simple enough to write, all you need is to call string.Replace repeatedly with the character you don't like and the one you want to replace it with (e.g. text = text.Replace('–',...
23 Jul 2015 by CPallini
Then make HTTP custom request. See "SIM900 GPRS/GSM Shield"[^].
12 Aug 2015 by Intel
In this article, we’ll talk about sending SMS messages to your phone from Twilio phone numbers.
14 Nov 2015 by George Jonsson
Maybe these articles can be helpful.Reading SMS Messages from a Message Storage Area Using AT Commands[^]Send and Read SMS through a GSM Modem using AT Commands[^]Receiving SMS messages using AT commands[^]
14 Jan 2016 by yourfriendaks
Try this.mono.Text should contains all numbers with whitespace separation.private void button1_Click(object sender, EventArgs e){ try { foreach(string varMobNo in mono.Text.split(' ')) { SmsSubmitPdu pdu; byte dcs =...
26 Apr 2018 by Intel
This document demonstrates how to send Short Message Service (SMS) messages to your phone using a Twilio phone number on the UP Squared board with Ubuntu when the light sensor indicates it is getting dark.
16 Feb 2020 by Stefan_Lang
If I understand you correctly, you want to reproduce a string (the remote number) within a new string, and enclose it in double quotes (what you called inverted double comma). You can do it like this: #include #include int...
9 Apr 2021 by Dave Kreskowiak
You're going to have to ask your SMS provider if they supply geofencing services for SMS messaging.
1 Dec 2022 by OriginalGriff
And you probably won't, or at least not easily - nobody makes how they detect spam that public because they don't want spammers to be able to work out how to get around the filters. I'd suggest that you probably want to start by training a AI...
31 May 2010 by sinaku08
Hi all,I am trying to send SMS through p300u edge modem but it is showing an error +CMS Error :518. Here I am changing the message format into text mode by giving the command AT+CMGF=1, and it is giving OK response.But while reading the SMS it is showing in number format and I am unable to...
31 May 2010 by sinaku08
Hi, I am trying to read and send SMS in text mode. I found in AT commands help document that text messages can be sent in phase-2 TPDU mode. Please tell me how to change to TPDU and phase modes using P300U Edge modem.UPDATE SM:1. You should add this question for others to have a...
3 Jul 2010 by Ekansh Saxena
i want to send bulk sms to my customers. i am using mysql as my database. the interface i am using to ineract with database is web. i am using php to insert and fetch data from mysql.tell me how to send bulk sms from that database
3 Jul 2010 by Abhinav S
Could this be of any assistance to you?
25 Aug 2010 by yuan19850805
the message info how to decoder. eg.at^HCMGR=0,0^HCMGR:13430982730,2010,08,26,14,18,30,0,1,11,0,0,0,1Juane155932OK+CMTI:"SM",2at^HCMGR=2,0^HCMGR:13430982730,2010,08,26,14,24,39,0,6,4,0,0,0,0s婹k OK
26 Aug 2010 by Sandeep Mewara
Your question does not make much of a sense as already conveyed to you. It looks like English is not your first language and you might be more comfortable asking the question in Chinese. If so, then you can try posting here too: Code Project Chinese Forum[^]If needed, you can use 'Improve...
26 Nov 2010 by vaneesha
Hi,Can anybody help me develop SMS package to send SMS by using IP address or wireless modem connection :)
27 Nov 2010 by Goutam Patra
Check the link below for some idea about.sending SMS[^]
26 Nov 2010 by Rajesh Anuhya
What do u mean by SMS sending by Ip address.., Sending Sms From Web Service/API's: There are So many Paid/may be Free Api's available in the internet choose one and call that API from your application. OrGo to your local Service Provider ask for the SMS...
26 Nov 2010 by skymaths02
hi to all, i wish to do sms project for sending messages through webservice or GSM using asp.net can any one help me?thanking you all
26 Nov 2010 by nitin bhoyate
You can use online SMS API..I never used this but seen in my friends application..Online sms API provides the URL to send SMSthe format of URL looks like/?+textboxphoneNo.text+???+textboxMessge.text+???etc..you have to pass the message and receipients phone to UrlI got One...
12 Jan 2011 by ibrahim iqbal
Hey guys,i'm nw here. I need some hint or some clue.The problem is:how to enter some data into a database via sms?what i mean is, whether we can change or manipulate the database using input from SMS
18 Jan 2011 by SIJIN T A
Hi,I need to send a text message from one mobile phone to other mobiles using C#. If this is possible, please give me some guidance on how I can do this? Thank you.
11 Feb 2011 by Member 7665430
In the article How to conduct an SMS survey using a cellphone connected SMS Gateway and MS Access, the download file isn't available. Can you help me?Thanks,Roberti
13 Apr 2011 by obhasha07
The PORTech 374 gateway does not have any SDK or dlls. It just simply has a small firmware which can be accessed by entering an IP address (just like most routers). All I need is a way to communicate with the gateway. There's a sample application in their website. But it's in C++ and I...
13 Apr 2011 by #realJSOP
The "best" is always subjective and directly tied to the conditions/environment in which you're operating. You're a programmer - write it every way you can think of and gather your own metrics. Refine your google searches so that you can gather this info. The answers you're going to get when...
1 May 2011 by Kim Togo
Hi afshinYou have to chose the correct encoding format. The default encoding schema use for SMS is "GSM default alphabet (GSM 03.38)[^]" or this link http://www.developershome.com/sms/gsmAlphabet.asp[^]This does not define Arabic character set.Use AT+CSCS to set TE character set to...
5 May 2011 by se.nishant
i know how to send email with attachment but i want to learn how to view emails in a windows application..if anyone know please share..!! thanks..
11 May 2011 by sri4dotnet
Hi,I need to send an SMS. I don't know if any web services is already exist. If exist, I want to use that web services. If anybody knows such a webservice please tell me. Web services such that i need to give input parameters like IP address, port no.I searched in google, i couldn't get...
11 May 2011 by Abhinav S
Sending SMS using .NET through a Web service[^] may help.
11 May 2011 by Mahendra.p25
try this link also Send SMS Via Webservice[^]
16 May 2011 by eshaq
HiI want to connect Cell Phone to my program, then control it (Send/Receive SMS)all this by using C# Windows Form Application.I have Nokia N70, If it does not work tell me what Phone Name and Model I must usePlease tell me the Code and Cell Phone type(Name and Model)thank you!
16 May 2011 by Sergey Alexandrovich Kryukov
For example, see Sending SMS using .NET[^].If you don't like it, search. To topic is too popular; you will find tons of directions and code samples.—SA
16 May 2011 by RaviRanjanKr
TryHow To Send and Receive SMS using GSM Modem[^]
20 May 2011 by thatraja
I just found these in CP searchSend and Read SMS through a GSM Modem using AT Commands[^]vb.net AT commands to send SMS[^]For more[^]
4 Jun 2011 by Kim Togo
You cannot do it on a GSM unit/modem. There is no option in PDU encoded SMS that allows you to customize the sender number/name. There is no way to get a sender address into an SMS-Submit-PDU. The Originating Address (OA) is controlled by the SMSC.You have to do it via service on the mobile...
14 Jun 2011 by HussainAqsa
{ int port; int baud; string status, acknowlegde; GsmCommMain myport; public Form1() { InitializeComponent(); } private void comboBox2_SelectedIndexChanged(object sender, EventArgs e) { } ...
31 Jul 2011 by Myth31
I am trying to send sms to distinct users from the database. Code works perfectly fine on the local host. But when I upload it to the server, it works but it is sending duplicate messages. That is if there are 3 messages to 3 different people, each person gets his message twice or thrice instead...
31 Jul 2011 by Shameel
If you are using a different database on your server, it may be that your server database has more than one row for the same mobile number. Check the rows of the crm table in your server.
18 Sep 2012 by devildx2050
Using the codeIn this article I am using a web service which already exists. Since this web service is tie up with ICQ instant messaging service make our work easier. With the help of this web service we can able to send SMS to various countries like India, US, UK, Malaysia, Japan etc. In...
2 Nov 2011 by sravani.v
you will almost certainly need a third party library. I doubt anyone still writes or supports those for VB6 tho, given how out of date and obsolete it isRefer this link:Sending SMS Through VB 6[^]
10 Nov 2011 by Member 8327420
1.The below written codes works only if the button is clicked twice.2.The message is send along with AT command and phonenumber. eg."AT+CMGS"9430011111" hii there!!!Imports System.IO.PortsPublic Class Form1 Shared _Continue As Boolean = False Shared _ContSMS As Boolean =...
13 Nov 2011 by Ashok19r91d
Use SerialPort1.WriteLine instead of SerialPort1.Write
28 Dec 2011 by nikhilaggar
can somebuddy help me out , i need to send multiple sms , saved in excel sheet or in my phone to one desired number at one go...is this possible ..?please recommend a software , I MAY use a gsm modem or a phone to connect to pc ..please suggest
13 Jan 2012 by sumit6048
Hi Guys, My Name is sumit, i am designing one site for one of my client he is asking me mobile verification code through website, in his website if someone fills the contact us form.. then some code has to be sent in mobile number, that mobile num which he has enter into website, and after...
20 Jan 2012 by bhuwandevshali
How can i send and recieve sms's using Nokia-Gsm Java phone on a windows desktop application?? I need the code written in c#... i am a newbie... :(
28 Jan 2012 by javinczki
Hi there!Can you please help us in our project..I find difficulties in receiving new messages..I want to trigger the process by receiving the messageI am new to C# PL and I'm using GSMComm library.I just want to know the Exactcode enable to know I was received a new MEssageThanx...
20 Mar 2012 by mesbar
i want to use dial up modem as GSM modem to send sms from pc to mobile phone.is it possible to use extended AT commands to instruct dial up modem
22 Mar 2012 by mesbar
the following site may give more explanationSend-and-Read-SMS-through-a-GSM-Modem-using-AT-Commands-codeproject
20 May 2012 by mohammadghaderian.bp
HiI want to send sms from my application with GSM modem.When I search on internet I often find ActiveX sdk. Can you introduce me a .net sdk for sending and reading SMS.thanks a lot.
22 May 2012 by El_Codero
Hi,this great article at Codeproject should help you understaning how en-/decoding pdu format works.Library for Decode/Encode SMS PDU[^]Regards
25 May 2012 by beratxt
Hi guys, I'm using gsmcomm library for sending sms.I would like to set a server computer.And i want to give a client program to the custemer.My customers are going to use this client application.By this application , they will connect to my server computer.Then , they will send sms...
12 Jul 2012 by Anand Ayyappan
you need to use urlencode function to encode all data before passing to other pages. Also its better to use file_get_contents to make the api call.
17 Aug 2012 by Jeeva G
Hi alli sent the sms using asp.net . but particular time the message need to send . and Checking the particular time automatically and send sms.Thanks & Regards,Jeeva
17 Aug 2012 by AmitGajjar
Hi,Hopeful...
31 Aug 2012 by Vartan Khachatourian
Hi experts,I am developing a software that sends sms and it's waiting for recieving sms using a GSM Modem (USB port that identities as a COM).I am using ActiveXperts Software SMS MMS ToolkitIt works until sending the first sms. After sending the first sms it can't recieve any more sms...
31 Aug 2012 by Sandeep Mewara
It would be better if you go and talk to ActiveXperts Software guys. They should suggest and help you out in setting it up properly.
31 Aug 2012 by Aarti Meswania
using AT commands you are facing same problem,It can be problem with modem or sim-card or network also,try to attach mobile with same simcard instead of modem device & testif problem is not found then something wrong in modem device.Happy Coding!:)
30 Sep 2012 by AmanArora1987
I want to send a text message to multiple recipients in a Blackberry, how can i add a text box which pick number from address book and also give me a way to enter number manually. Plz help me for thisThanks and Regards
9 Oct 2012 by Srivikas
Hi friends, I am planning to design an ASP.NET e-commerce web site which delivers messages to the users when they buy a product. For that I need an SMS API which can be integrated in my web site. There are many such third party vendors who are offering that feature. But i cant afford their...
15 Nov 2012 by esikley
i want to write a project that been written by c# language and send Sms automatically and send it in a specific time to a special one we want to send that can be sent both by Gsm and internet panel...
4 Dec 2012 by shrikant khode
Hi, I am creating educational project.My requirement is sending SMS.Please guide me for doing it.SMS API should have free licensed.Regards,Shrikant