Send special charterers in SMS using C# and VB.Net in ASP.Net

Hi indradeo,

Use the Uri.EscapeDataString() function to send the message with special characters.

Namespaces

C#

using System.IO;
using System.Net;

VB.Net

Imports System.IO
Imports System.Net

Code

protected void Page_Load(object sender, EventArgs e)
{
    string message = "$#%^&*()?/|";
    Response.Write(sendSMS("+919999999999", Uri.EscapeDataString(message)));
}

static string sendSMS(string mobileNo, string messageTxt)
{
    string SMSurl = "my gateway";
    HttpWebRequest request = (HttpWebRequest)WebRequest.Create(SMSurl);
    HttpWebResponse response = (HttpWebResponse)request.GetResponse();
    StreamReader sr = new StreamReader(response.GetResponseStream());
    return sr.ReadToEnd();
}

VB.Net

Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
    Dim message As String = "$#%^&*()?/|"
    Response.Write(sendSMS("+919999999999", Uri.EscapeDataString(message)))
End Sub

Private Shared Function sendSMS(ByVal mobileNo As String, ByVal messageTxt As String) As String
    Dim SMSurl As String = "my gateway"
    Dim request As HttpWebRequest = CType(WebRequest.Create(SMSurl), HttpWebRequest)
    Dim response As HttpWebResponse = CType(request.GetResponse(), HttpWebResponse)
    Dim sr As StreamReader = New StreamReader(response.GetResponseStream())
    Return sr.ReadToEnd()
End Function

You will get the response as Json string like below.

{"messages":[{"to":"919999999999","status":{"groupId":1,"groupName":"PENDING","id":7,"name":"PENDING_ENROUTE","description":"Message sent to next instance"},"messageId":"9219721866693983716","smsCount":1}]}