WEBREQUEST AND WEBRESPONSE PROBLEM

[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))

 

[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.

 

[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)

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.

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))

 

[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.

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)

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.

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))

 

[Savas Ates]

thanks