WEBREQUEST AND WEBRESPONSE PROBLEM

microsoft.public.dotnet.languages.vb

24 Jan 2006 12:17 PM

Savas Ates

I have a vb.net web application. I want to post some variables to another
web page and take some values back and process them.

This is codes in my target url. I should post "langpair" cariable to my
target url and it will respond with a value depend on a value which i send.
<SELECT name=langpair><OPTION
                    value=en|de>English to German</OPTION><OPTION
                    value=en|es>English to Spanish</OPTION>
</select>

I must use post method. I must give a value for select object and post it to
my target url ? I heard about BeginGetRequestStream but i dont know how to
do it ?

Dim objURI As Uri = New Uri("http://www.isbuluyorum.com/translate")
        Dim objWebRequest As WebRequest = WebRequest.Create(objURI)
        objWebRequest.ContentType = "text/html; charset=utf-8"
        objWebRequest.Method = "POST"
       'BEFORE to get response i should post variables to other web page ?

        Dim objWebResponse As WebResponse = objWebRequest.GetResponse()
        Dim objStream As Stream = objWebResponse.GetResponseStream()
        Dim objStreamReader As StreamReader = New StreamReader(objStream)
        Dim strHTML As String = objStreamReader.ReadToEnd

        Response.Write(Server.HtmlEncode(strHTML))

24 Jan 2006 1:40 PM

Kevin Spencer

The body of an HTTP POST of form data is a set of URL-encoded name=value
pairs. For example, the body of the message you would want to send in this
case would be something like:

langpair=en%7Cde

Note the "%7C" used for the "|" character. For the most part, you can use
HttpUtility.UrlEncode to do the encoding of the string. However, many
servers don't recognize "%20" as a space, so you would want to use "+" for
spaces instead.

You just write the string to the stream you receive from the
GetResponseStream method.

The following example is in C#. I trust you can do the translation:

// ...code to initialize WebRequest and WebResponse...

System.Text.ASCIIEncoding encoding = new System.Text.ASCIIEncoding();
System.IO.Stream requestStream = null;
byte[] body;

objWebRequest.Method = "POST";
objWebRequest.ContentType = "application/x-www-form-urlencoded";
objWebbody = encoding.GetBytes("langpair=en%7Cde");
objWebRequest.ContentLength = body.Length;
requestStream = Request.GetRequestStream();
requestStream.Write(body, 0, body.Length);
objWebResponse = (HttpWebResponse)Request.GetResponse();

--
HTH,

Kevin Spencer
Microsoft MVP
..Net Developer
Who is Mighty Abbott?
A twin turret scalawag.

Show quoteHide quote

"Savas Ates" <in da club> wrote in message
news:u7hfyAOIGHA.2668@tk2msftngp13.phx.gbl...
>I have a vb.net web application. I want to post some variables to another
> web page and take some values back and process them.
>
>
> This is codes in my target url. I should post "langpair" cariable to my
> target url and it will respond with a value depend on a value which i
> send.
> <SELECT name=langpair><OPTION
>                    value=en|de>English to German</OPTION><OPTION
>                    value=en|es>English to Spanish</OPTION>
> </select>
>
>
>
> I must use post method. I must give a value for select object and post it
> to
> my target url ? I heard about BeginGetRequestStream but i dont know how
> to
> do it ?
>
>
> Dim objURI As Uri = New Uri("http://www.isbuluyorum.com/translate")
>        Dim objWebRequest As WebRequest = WebRequest.Create(objURI)
>        objWebRequest.ContentType = "text/html; charset=utf-8"
>        objWebRequest.Method = "POST"
>       'BEFORE to get response i should post variables to other web page ?
>
>
>        Dim objWebResponse As WebResponse = objWebRequest.GetResponse()
>        Dim objStream As Stream = objWebResponse.GetResponseStream()
>        Dim objStreamReader As StreamReader = New StreamReader(objStream)
>        Dim strHTML As String = objStreamReader.ReadToEnd
>
>        Response.Write(Server.HtmlEncode(strHTML))
>
>

24 Jan 2006 2:18 PM

Savas Ates

I wrote the code which is below. It seems ok but i have more variables to
send to my target web page ?
<textarea name=text1> </textarea>
<textarea name=text2> </textarea>

how can i add all variables to send to my target page ?

Dim encoding As New System.Text.ASCIIEncoding

Dim requestStream As System.IO.Stream

Dim objURI As Uri = New Uri(http://www.isbuluyorum.com)

Dim objWebRequest As WebRequest = WebRequest.Create(objURI)

objWebRequest.ContentType = "application/x-www-form-urlencoded"

objWebRequest.Method = "POST"

Dim body() As Byte

body = encoding.GetBytes("langpair=en%7Cde")

objWebRequest.ContentLength = body.Length

requestStream = objWebRequest.GetRequestStream

requestStream.Write(body, 0, body.Length)

Dim objWebResponse As WebResponse = objWebRequest.GetResponse()

Dim objStream As Stream = objWebResponse.GetResponseStream()

Dim objStreamReader As StreamReader = New StreamReader(objStream)

Dim strHTML As String = objStreamReader.ReadToEnd

Response.Write(strHTML)

Show quoteHide quote

"Kevin Spencer" <kevin@DIESPAMMERSDIEtakempis.com> wrote in message
news:#WisQvOIGHA.1288@TK2MSFTNGP09.phx.gbl...
> The body of an HTTP POST of form data is a set of URL-encoded name=value
> pairs. For example, the body of the message you would want to send in this
> case would be something like:
>
> langpair=en%7Cde
>
> Note the "%7C" used for the "|" character. For the most part, you can use
> HttpUtility.UrlEncode to do the encoding of the string. However, many
> servers don't recognize "%20" as a space, so you would want to use "+" for
> spaces instead.
>
> You just write the string to the stream you receive from the
> GetResponseStream method.
>
> The following example is in C#. I trust you can do the translation:
>
> // ...code to initialize WebRequest and WebResponse...
>
> System.Text.ASCIIEncoding encoding = new System.Text.ASCIIEncoding();
> System.IO.Stream requestStream = null;
> byte[] body;
>
> objWebRequest.Method = "POST";
> objWebRequest.ContentType = "application/x-www-form-urlencoded";
> objWebbody = encoding.GetBytes("langpair=en%7Cde");
> objWebRequest.ContentLength = body.Length;
> requestStream = Request.GetRequestStream();
> requestStream.Write(body, 0, body.Length);
> objWebResponse = (HttpWebResponse)Request.GetResponse();
>
> --
> HTH,
>
> Kevin Spencer
> Microsoft MVP
> .Net Developer
> Who is Mighty Abbott?
> A twin turret scalawag.
>
> "Savas Ates" <in da club> wrote in message
> news:u7hfyAOIGHA.2668@tk2msftngp13.phx.gbl...
> >I have a vb.net web application. I want to post some variables to another
> > web page and take some values back and process them.
> >
> >
> > This is codes in my target url. I should post "langpair" cariable to my
> > target url and it will respond with a value depend on a value which i
> > send.
> > <SELECT name=langpair><OPTION
> >                    value=en|de>English to German</OPTION><OPTION
> >                    value=en|es>English to Spanish</OPTION>
> > </select>
> >
> >
> >
> > I must use post method. I must give a value for select object and post
it
> > to
> > my target url ? I heard about BeginGetRequestStream but i dont know how
> > to
> > do it ?
> >
> >
> > Dim objURI As Uri = New Uri("http://www.isbuluyorum.com/translate")
> >        Dim objWebRequest As WebRequest = WebRequest.Create(objURI)
> >        objWebRequest.ContentType = "text/html; charset=utf-8"
> >        objWebRequest.Method = "POST"
> >       'BEFORE to get response i should post variables to other web page
?
> >
> >
> >        Dim objWebResponse As WebResponse = objWebRequest.GetResponse()
> >        Dim objStream As Stream = objWebResponse.GetResponseStream()
> >        Dim objStreamReader As StreamReader = New StreamReader(objStream)
> >        Dim strHTML As String = objStreamReader.ReadToEnd
> >
> >        Response.Write(Server.HtmlEncode(strHTML))
> >
> >
>
>

24 Jan 2006 4:16 PM

Kevin Spencer

Ah yes. It works just like a QueryString. Each name=value pair is separated
by the "&" character, as in:

text1=blah+blah+blah&text2=blah+blah+blah

--
HTH,

Kevin Spencer
Microsoft MVP
..Net Developer
Who is Mighty Abbott?
A twin turret scalawag.

Show quoteHide quote

"Savas Ates" <in da club> wrote in message
news:%23odseEPIGHA.604@TK2MSFTNGP14.phx.gbl...
>I wrote the code which is below. It seems ok but i have more variables to
> send to my target web page ?
> <textarea name=text1> </textarea>
> <textarea name=text2> </textarea>
>
> how can i add all variables to send to my target page ?
>
>
>
>
>
>
>
>
> Dim encoding As New System.Text.ASCIIEncoding
>
> Dim requestStream As System.IO.Stream
>
>
>
> Dim objURI As Uri = New Uri(http://www.isbuluyorum.com)
>
> Dim objWebRequest As WebRequest = WebRequest.Create(objURI)
>
> objWebRequest.ContentType = "application/x-www-form-urlencoded"
>
> objWebRequest.Method = "POST"
>
> Dim body() As Byte
>
> body = encoding.GetBytes("langpair=en%7Cde")
>
> objWebRequest.ContentLength = body.Length
>
> requestStream = objWebRequest.GetRequestStream
>
> requestStream.Write(body, 0, body.Length)
>
>
>
> Dim objWebResponse As WebResponse = objWebRequest.GetResponse()
>
> Dim objStream As Stream = objWebResponse.GetResponseStream()
>
> Dim objStreamReader As StreamReader = New StreamReader(objStream)
>
> Dim strHTML As String = objStreamReader.ReadToEnd
>
> Response.Write(strHTML)
>
>
>
>
>
>
>
>
>
>
>
> "Kevin Spencer" <kevin@DIESPAMMERSDIEtakempis.com> wrote in message
> news:#WisQvOIGHA.1288@TK2MSFTNGP09.phx.gbl...
>> The body of an HTTP POST of form data is a set of URL-encoded name=value
>> pairs. For example, the body of the message you would want to send in
>> this
>> case would be something like:
>>
>> langpair=en%7Cde
>>
>> Note the "%7C" used for the "|" character. For the most part, you can use
>> HttpUtility.UrlEncode to do the encoding of the string. However, many
>> servers don't recognize "%20" as a space, so you would want to use "+"
>> for
>> spaces instead.
>>
>> You just write the string to the stream you receive from the
>> GetResponseStream method.
>>
>> The following example is in C#. I trust you can do the translation:
>>
>> // ...code to initialize WebRequest and WebResponse...
>>
>> System.Text.ASCIIEncoding encoding = new System.Text.ASCIIEncoding();
>> System.IO.Stream requestStream = null;
>> byte[] body;
>>
>> objWebRequest.Method = "POST";
>> objWebRequest.ContentType = "application/x-www-form-urlencoded";
>> objWebbody = encoding.GetBytes("langpair=en%7Cde");
>> objWebRequest.ContentLength = body.Length;
>> requestStream = Request.GetRequestStream();
>> requestStream.Write(body, 0, body.Length);
>> objWebResponse = (HttpWebResponse)Request.GetResponse();
>>
>> --
>> HTH,
>>
>> Kevin Spencer
>> Microsoft MVP
>> .Net Developer
>> Who is Mighty Abbott?
>> A twin turret scalawag.
>>
>> "Savas Ates" <in da club> wrote in message
>> news:u7hfyAOIGHA.2668@tk2msftngp13.phx.gbl...
>> >I have a vb.net web application. I want to post some variables to
>> >another
>> > web page and take some values back and process them.
>> >
>> >
>> > This is codes in my target url. I should post "langpair" cariable to
>> > my
>> > target url and it will respond with a value depend on a value which i
>> > send.
>> > <SELECT name=langpair><OPTION
>> >                    value=en|de>English to German</OPTION><OPTION
>> >                    value=en|es>English to Spanish</OPTION>
>> > </select>
>> >
>> >
>> >
>> > I must use post method. I must give a value for select object and post
> it
>> > to
>> > my target url ? I heard about BeginGetRequestStream but i dont know
>> > how
>> > to
>> > do it ?
>> >
>> >
>> > Dim objURI As Uri = New Uri("http://www.isbuluyorum.com/translate")
>> >        Dim objWebRequest As WebRequest = WebRequest.Create(objURI)
>> >        objWebRequest.ContentType = "text/html; charset=utf-8"
>> >        objWebRequest.Method = "POST"
>> >       'BEFORE to get response i should post variables to other web
>> > page
> ?
>> >
>> >
>> >        Dim objWebResponse As WebResponse = objWebRequest.GetResponse()
>> >        Dim objStream As Stream = objWebResponse.GetResponseStream()
>> >        Dim objStreamReader As StreamReader = New
>> > StreamReader(objStream)
>> >        Dim strHTML As String = objStreamReader.ReadToEnd
>> >
>> >        Response.Write(Server.HtmlEncode(strHTML))
>> >
>> >
>>
>>
>
>

24 Jan 2006 7:22 PM

Savas Ates

thanks ;)

Show quoteHide quote

"Savas Ates" <in da club> wrote in message
news:u7hfyAOIGHA.2668@tk2msftngp13.phx.gbl...
> I have a vb.net web application. I want to post some variables to another
> web page and take some values back and process them.
>
>
> This is codes in my target url. I should post "langpair" cariable to my
> target url and it will respond with a value depend on a value which i
send.
> <SELECT name=langpair><OPTION
>                     value=en|de>English to German</OPTION><OPTION
>                     value=en|es>English to Spanish</OPTION>
> </select>
>
>
>
> I must use post method. I must give a value for select object and post it
to
> my target url ? I heard about BeginGetRequestStream but i dont know how
to
> do it ?
>
>
> Dim objURI As Uri = New Uri("http://www.isbuluyorum.com/translate")
>         Dim objWebRequest As WebRequest = WebRequest.Create(objURI)
>         objWebRequest.ContentType = "text/html; charset=utf-8"
>         objWebRequest.Method = "POST"
>        'BEFORE to get response i should post variables to other web page
?
>
>
>         Dim objWebResponse As WebResponse = objWebRequest.GetResponse()
>         Dim objStream As Stream = objWebResponse.GetResponseStream()
>         Dim objStreamReader As StreamReader = New StreamReader(objStream)
>         Dim strHTML As String = objStreamReader.ReadToEnd
>
>         Response.Write(Server.HtmlEncode(strHTML))
>
>