How to send a POST in .net vb?

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What i am trying to do is get my user to enter in a phone number and message and then post it to text marketer which send the message.

at the moment if i use a resp

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孤城傲影

2020-12-06 08:18

Don't do this server side, but client side using AJAX.

The jQuery ajax library is quite good.

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抹茶落季

2020-12-06 08:23

you have to use the webrequest class. refer http://msdn.microsoft.com/en-us/library/debx8sh9.aspx

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[愿得一人]

2020-12-06 08:27

actually, you don't have to do this server side (vb), just plain html will do the trick:

<html>
    <body>
        <form action="http://google.com" method="post">
            <input type="hidden" value="somevalue"/>
            <input Type="submit" value="Submit"/>
        </form>
    </body>
</html>

this will post the data (and in effect, redirect) to google.com.

Maybe you could use client script (jQuery) - $.ajax() or $.post(). but I think you will face cross domain restrictions (there is a workaround but its not that clean and straightforward).

Another is using the HttpWebRequest class. This is server side and the post will originate from your server instead of the client (as what the 1st approach will do). upon calling request.GetResponse(), you can retrieve the output from the remote server and render it on your page. But if you want to post and redirect to the remote url then I guess you should use the first approach.

EDIT:

try this in VB:

Option Infer On
Imports System.Net
Imports System.Text


Public Class Test

    Private Sub TESTRUN()
        Dim s As HttpWebRequest
        Dim enc As UTF8Encoding
        Dim postdata As String
        Dim postdatabytes As Byte()
        s = HttpWebRequest.Create("http://www.textmarketer.biz/gateway/")
        enc = New System.Text.UTF8Encoding()
        postdata = "username=*****&password=*****&message=test+message&orig=test&number=447712345678"
        postdatabytes = enc.GetBytes(postdata)
        s.Method = "POST"
        s.ContentType = "application/x-www-form-urlencoded"
        s.ContentLength = postdatabytes.Length

        Using stream = s.GetRequestStream()
            stream.Write(postdatabytes, 0, postdatabytes.Length)
        End Using
        Dim result = s.GetResponse()
    End Sub
End Class

update2:

a GET request using HttpWebRequest in VB.net.

Dim s As HttpWebRequest
Dim username = "username=" + HttpUtility.UrlEncode("yourusername")
Dim password = "password=" + HttpUtility.UrlEncode("yourp@assword)!==&@(*#)!@#(_")
Dim message = "message=" + HttpUtility.UrlEncode("yourmessage")
Dim orig = "orig=" + HttpUtility.UrlEncode("dunno what this is")
Dim num = "number=" + HttpUtility.UrlEncode("123456")
Dim sep = "&"
Dim sb As New StringBuilder()
sb.Append(username).Append(sep).Append(password).Append(sep)
sb.Append(message).Append(sep).Append(orig).Append(sep).Append(num)

s = HttpWebRequest.Create("http://www.textmarketer.biz/gateway/?" + sb.ToString())

s.Method = "GET"
Dim result = s.GetResponse()

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