Come inviare un messaggio tramite l’API di WhatsApp utilizzando vbnet

introduzione

In questo tutorial creeremo una pagina per inviare un messaggio WhatsApp tramite WhatsAppAPI utilizzando vb.net

Primo messaggio API WhatsApp utilizzando Visual Basic.NET

Imports System 
Imports System.Net
Imports System.Text
Imports System.IO
Imports System.Web

Module base64  
    Sub Main()  
        Dim WebRequest As HttpWebRequest
        Dim instance_id as string ="instance1150"
        Dim token as string  ="1g55hyy7ixrsi2"
        Dim mobile_number as string  ="14155552671"
        dim ultramsgApiUrl as string  ="https://api.ultramsg.com/"+instance_id+"/messages/chat"
        WebRequest = HttpWebRequest.Create(ultramsgApiUrl)
        Dim postdata As String = "token=" + token + "&to="+ mobile_number + "&body=WhatsApp API on UltraMsg.com works good"
        Dim enc As UTF8Encoding = New System.Text.UTF8Encoding()
        Dim postdatabytes As Byte()  = enc.GetBytes(postdata)
        WebRequest.Method = "POST"
        WebRequest.ContentType = "application/x-www-form-urlencoded"
        WebRequest.GetRequestStream().Write(postdatabytes)
        Dim ret As New System.IO.StreamReader(WebRequest.GetResponse().GetResponseStream())
        console.writeline(ret.ReadToEnd())
    End Sub  
  
End Module  

Invia immagine utilizzando vbnet

Imports System 
Imports System.Net
Imports System.Text
Imports System.IO
Imports System.Web

Module base64  
    Sub Main()  
        Dim WebRequest As HttpWebRequest
        Dim instance_id as string ="instance1150"
        Dim token as string  ="1g55hyy7ixrsi2"
        Dim mobile_number as string  ="14155552671"
        dim ultramsgApiUrl as string  ="https://api.ultramsg.com/"+instance_id+"/messages/image"
        WebRequest = HttpWebRequest.Create(ultramsgApiUrl)
        Dim postdata As String = "token=" + token + "&to="+ mobile_number + "&image=https://file-example.s3-accelerate.amazonaws.com/images/test.jpeg&caption=image Caption"
        Dim enc As UTF8Encoding = New System.Text.UTF8Encoding()
        Dim postdatabytes As Byte()  = enc.GetBytes(postdata)
        WebRequest.Method = "POST"
        WebRequest.ContentType = "application/x-www-form-urlencoded"
        WebRequest.GetRequestStream().Write(postdatabytes)
        Dim ret As New System.IO.StreamReader(WebRequest.GetResponse().GetResponseStream())
        console.writeline(ret.ReadToEnd())
    End Sub  
  
End Module  

Invia documento utilizzando vbnet

Imports System 
Imports System.Net
Imports System.Text
Imports System.IO
Imports System.Web

Module base64  
    Sub Main()  
        Dim WebRequest As HttpWebRequest
        Dim instance_id as string ="instance1150"
        Dim token as string  ="1g55hyy7ixrsi2"
        Dim mobile_number as string  ="14155552671"
        dim ultramsgApiUrl as string  ="https://api.ultramsg.com/"+instance_id+"/messages/document"
        WebRequest = HttpWebRequest.Create(ultramsgApiUrl)
        Dim postdata As String = "token=" + token + "&to="+ mobile_number + "&filename=hello.pdf&document=https://file-example.s3-accelerate.amazonaws.com/documents/cv.pdf"
        Dim enc As UTF8Encoding = New System.Text.UTF8Encoding()
        Dim postdatabytes As Byte()  = enc.GetBytes(postdata)
        WebRequest.Method = "POST"
        WebRequest.ContentType = "application/x-www-form-urlencoded"
        WebRequest.GetRequestStream().Write(postdatabytes)
        Dim ret As New System.IO.StreamReader(WebRequest.GetResponse().GetResponseStream())
        console.writeline(ret.ReadToEnd())
    End Sub  
  
End Module  

Invia audio tramite vbnet

Imports System 
Imports System.Net
Imports System.Text
Imports System.IO
Imports System.Web

Module base64  
    Sub Main()  
        Dim WebRequest As HttpWebRequest
        Dim instance_id as string ="instance1150"
        Dim token as string  ="1g55hyy7ixrsi2"
        Dim mobile_number as string  ="14155552671"
        dim ultramsgApiUrl as string  ="https://api.ultramsg.com/"+instance_id+"/messages/audio"
        WebRequest = HttpWebRequest.Create(ultramsgApiUrl)
        Dim postdata As String = "token=" + token + "&to="+ mobile_number + "&audio=https://file-example.s3-accelerate.amazonaws.com/audio/2.mp3"
        Dim enc As UTF8Encoding = New System.Text.UTF8Encoding()
        Dim postdatabytes As Byte()  = enc.GetBytes(postdata)
        WebRequest.Method = "POST"
        WebRequest.ContentType = "application/x-www-form-urlencoded"
        WebRequest.GetRequestStream().Write(postdatabytes)
        Dim ret As New System.IO.StreamReader(WebRequest.GetResponse().GetResponseStream())
        console.writeline(ret.ReadToEnd())
    End Sub  
  
End Module  

Invia voce utilizzando vbnet

Imports System 
Imports System.Net
Imports System.Text
Imports System.IO
Imports System.Web

Module base64  
    Sub Main()  
        Dim WebRequest As HttpWebRequest
        Dim instance_id as string ="instance1150"
        Dim token as string  ="1g55hyy7ixrsi2"
        Dim mobile_number as string  ="14155552671"
        dim ultramsgApiUrl as string  ="https://api.ultramsg.com/"+instance_id+"/messages/voice"
        WebRequest = HttpWebRequest.Create(ultramsgApiUrl)
        Dim postdata As String = "token=" + token + "&to="+ mobile_number + "&audio=https://file-example.s3-accelerate.amazonaws.com/voice/oog_example.ogg"
        Dim enc As UTF8Encoding = New System.Text.UTF8Encoding()
        Dim postdatabytes As Byte()  = enc.GetBytes(postdata)
        WebRequest.Method = "POST"
        WebRequest.ContentType = "application/x-www-form-urlencoded"
        WebRequest.GetRequestStream().Write(postdatabytes)
        Dim ret As New System.IO.StreamReader(WebRequest.GetResponse().GetResponseStream())
        console.writeline(ret.ReadToEnd())
    End Sub  
  
End Module  

Invia video tramite vbnet

Imports System 
Imports System.Net
Imports System.Text
Imports System.IO
Imports System.Web

Module base64  
    Sub Main()  
        Dim WebRequest As HttpWebRequest
        Dim instance_id as string ="instance1150"
        Dim token as string  ="1g55hyy7ixrsi2"
        Dim mobile_number as string  ="14155552671"
        dim ultramsgApiUrl as string  ="https://api.ultramsg.com/"+instance_id+"/messages/video"
        WebRequest = HttpWebRequest.Create(ultramsgApiUrl)
        Dim postdata As String = "token=" + token + "&to="+ mobile_number + "&video=https://file-example.s3-accelerate.amazonaws.com/video/test.mp4"
        Dim enc As UTF8Encoding = New System.Text.UTF8Encoding()
        Dim postdatabytes As Byte()  = enc.GetBytes(postdata)
        WebRequest.Method = "POST"
        WebRequest.ContentType = "application/x-www-form-urlencoded"
        WebRequest.GetRequestStream().Write(postdatabytes)
        Dim ret As New System.IO.StreamReader(WebRequest.GetResponse().GetResponseStream())
        console.writeline(ret.ReadToEnd())
    End Sub  
  
End Module  

Invia collegamento tramite vbnet

Imports System 
Imports System.Net
Imports System.Text
Imports System.IO
Imports System.Web

Module base64  
    Sub Main()  
        Dim WebRequest As HttpWebRequest
        Dim instance_id as string ="instance1150"
        Dim token as string  ="1g55hyy7ixrsi2"
        Dim mobile_number as string  ="14155552671"
        dim ultramsgApiUrl as string  ="https://api.ultramsg.com/"+instance_id+"/messages/link"
        WebRequest = HttpWebRequest.Create(ultramsgApiUrl)
        Dim postdata As String = "token=" + token + "&to="+ mobile_number + "&link=https://en.wikipedia.org/wiki/COVID-19"
        Dim enc As UTF8Encoding = New System.Text.UTF8Encoding()
        Dim postdatabytes As Byte()  = enc.GetBytes(postdata)
        WebRequest.Method = "POST"
        WebRequest.ContentType = "application/x-www-form-urlencoded"
        WebRequest.GetRequestStream().Write(postdatabytes)
        Dim ret As New System.IO.StreamReader(WebRequest.GetResponse().GetResponseStream())
        console.writeline(ret.ReadToEnd())
    End Sub  
  
End Module  

Invia contatto tramite vbnet

Imports System 
Imports System.Net
Imports System.Text
Imports System.IO
Imports System.Web

Module base64  
    Sub Main()  
        Dim WebRequest As HttpWebRequest
        Dim instance_id as string ="instance1150"
        Dim token as string  ="1g55hyy7ixrsi2"
        Dim mobile_number as string  ="14155552671"
        dim ultramsgApiUrl as string  ="https://api.ultramsg.com/"+instance_id+"/messages/contact"
        WebRequest = HttpWebRequest.Create(ultramsgApiUrl)
        Dim postdata As String = "token=" + token + "&to="+ mobile_number + "&[email protected]"
        Dim enc As UTF8Encoding = New System.Text.UTF8Encoding()
        Dim postdatabytes As Byte()  = enc.GetBytes(postdata)
        WebRequest.Method = "POST"
        WebRequest.ContentType = "application/x-www-form-urlencoded"
        WebRequest.GetRequestStream().Write(postdatabytes)
        Dim ret As New System.IO.StreamReader(WebRequest.GetResponse().GetResponseStream())
        console.writeline(ret.ReadToEnd())
    End Sub  
  
End Module  

Invia posizione utilizzando vbnet

Imports System 
Imports System.Net
Imports System.Text
Imports System.IO
Imports System.Web

Module base64  
    Sub Main()  
        Dim WebRequest As HttpWebRequest
        Dim instance_id as string ="instance1150"
        Dim token as string  ="1g55hyy7ixrsi2"
        Dim mobile_number as string  ="14155552671"
        dim ultramsgApiUrl as string  ="https://api.ultramsg.com/"+instance_id+"/messages/location"
        WebRequest = HttpWebRequest.Create(ultramsgApiUrl)
        Dim postdata As String = "token=" + token + "&to="+ mobile_number + "&address=ABC company \n Sixth floor , office 38&lat=25.197197&lng=55.2721877"
        Dim enc As UTF8Encoding = New System.Text.UTF8Encoding()
        Dim postdatabytes As Byte()  = enc.GetBytes(postdata)
        WebRequest.Method = "POST"
        WebRequest.ContentType = "application/x-www-form-urlencoded"
        WebRequest.GetRequestStream().Write(postdatabytes)
        Dim ret As New System.IO.StreamReader(WebRequest.GetResponse().GetResponseStream())
        console.writeline(ret.ReadToEnd())
    End Sub  
  
End Module  

Invia Vcard usando vbnet

Imports System 
Imports System.Net
Imports System.Text
Imports System.IO
Imports System.Web

Module base64  
    Sub Main()  
        Dim WebRequest As HttpWebRequest
        Dim instance_id as string ="instance1150"
        Dim token as string  ="1g55hyy7ixrsi2"
        Dim mobile_number as string  ="14155552671"
        dim ultramsgApiUrl as string  ="https://api.ultramsg.com/"+instance_id+"/messages/vcard"
        WebRequest = HttpWebRequest.Create(ultramsgApiUrl)
        Dim postdata As String = "token=" + token + "&to="+ mobile_number + "&vcard= BEGIN:VCARD\nVERSION:3.0\nN:lastname;firstname\nFN:firstname lastname\nTEL;TYPE=CELL;waid=14000000001:14000000002\nNICKNAME:nickname\nBDAY:01.01.1987\nX-GENDER:M\nNOTE:note\nADR;TYPE=home:;;;;;;\nADR;TYPE=work_:;;;;;;\nEND:VCARD"
        Dim enc As UTF8Encoding = New System.Text.UTF8Encoding()
        Dim postdatabytes As Byte()  = enc.GetBytes(postdata)
        WebRequest.Method = "POST"
        WebRequest.ContentType = "application/x-www-form-urlencoded"
        WebRequest.GetRequestStream().Write(postdatabytes)
        Dim ret As New System.IO.StreamReader(WebRequest.GetResponse().GetResponseStream())
        console.writeline(ret.ReadToEnd())
    End Sub  
  
End Module  

infine, puoi vedere la documentazione completa dell’API di Whatsapp e le domande frequenti .