example of Server.Transfer and Context Handler

hanusoft · #1 (**permalink**) 09-03-2007, 12:25 AM

This is an example of Server.Transfer and Context Handler.
Through this we can get the multiple values of previous form.

In this page we are displaying data from previous form. We can use this technique for multiple form registration form.

Code (ContextParent.aspx.cs): -

private void Button1_Click(object sender,System.EventArgs e)
{
Server.Transfer("ContextChild.aspx");
}

internal Hashtable Value
{
get
{
Hashtable objHT = new Hashtable();
objHT["Name"]=TextBox1.Text;
objHT["FathersName"]= TextBox2.Text;
objHT["Address"] = TextBox3.Text;
return objHT;
}
}
Code (ContextChild.aspx.cs) :-

private void Page_Load(object sender, System.EventArgs e)
{
// Put user code to initialize the page here
Hashtable objHT = new Hashtable();
if(!IsPostBack)
{
ContextParent ParentPage;
ParentPage = (ContextParent)Context.Handler;
objHT = ParentPage.Value;
Response.Write("<br><br>");
foreach(DictionaryEntry di in objHT)
{
Response.Write(di.Key +" : "+di.Value);
Response.Write("<br>");
}
}
}

S.Vinothkumar · #2 (**permalink**) 09-06-2007, 07:08 AM

Hi

Here is a sample for Server.Transfer....Go thru this...

In this example, the starting page contains two forms, one using the HTTP POST method and the other using the HTTP GET method. Both pages use the same second page that detects the HTTP method and transfers to a different third page for each method used. Because the transfer method is being used, the Request Object is still populated and the correct results from the first page are displayed on the respective third page.

page1.asp

Code:

<html>
<body>
<h3>Step 1 - Form Page</h3>
<table border="1">
   <tr>
      <th>POST</th>
      <td>
         <form action="page2.asp" method="POST">
         <input type="text" name="Name">
         <input type="submit" value="Submit">
         </form>
      </td>
   <tr>
   </tr>
      <th>GET</th>
      <td>
         <form action="page2.asp" method="GET">
         <input type="text" name="Name">
         <input type="submit" value="Submit">
         </form>
      </td>
   </tr>
</table>
</body>
</html>

page2.asp

Code:

<% @LANGUAGE="VBSCRIPT" %>
<html>
<body>
<h3>Step 2 - Transfer Page</h3>
<%
   Select Case UCase(Request.ServerVariables("REQUEST_METHOD"))
      Case "POST"
         Server.Transfer "page3a.asp"
      Case "GET"
         Server.Transfer "page3b.asp"
      Case Else
         Response.Write "An unknown HTTP verb was used."
   End Select
%>
</body>
</html>

page3a.asp

Code:

<% @LANGUAGE="VBSCRIPT" %>
<h3>Step 3a - POST Results</h3>
<p>Hello <% = Request.Form("Name") %></p>
</body>
</html>

page3b.asp

Code:

<% @LANGUAGE="VBSCRIPT" %>
<h3>Step 3b - GET Results</h3>
<p>Hello <% = Request.QueryString("Name") %></p>
</body>
</html>

To try this example, save all pages to a Web folder with "Script" access enabled and browse "page1.asp."

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