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Question

How to post a page from asp.net to classic ASP

Answer 1

A:

I will build up a small form with just the variables you want, and output it to the client and submit itself. It's pretty neat, but it comes with the problem of breaking the back button, and sending the password back to the client in a form unencrypted.

public class  RemotePost{
     private  System.Collections.Specialized.NameValueCollection Inputs 
     = new  System.Collections.Specialized.NameValueCollection() ;

    public string  Url  =  "" ;
    public string  Method  =  "post" ;
    public string  FormName  =  "form1" ;

    public void  Add( string  name, string value ){
        Inputs.Add(name, value ) ;
     }

     public void  Post(){
        System.Web.HttpContext.Current.Response.Clear() ;

         System.Web.HttpContext.Current.Response.Write( "<html><head>" ) ;

         System.Web.HttpContext.Current.Response.Write( string .Format( "</head><body onload=\"document.{0}.submit()\">" ,FormName)) ;

         System.Web.HttpContext.Current.Response.Write( string .Format( "<form name=\"{0}\" method=\"{1}\" action=\"{2}\" >" ,

        FormName,Method,Url)) ;
            for ( int  i = 0 ; i< Inputs.Keys.Count ; i++){
            System.Web.HttpContext.Current.Response.Write( string .Format( "<input name=\"{0}\" type=\"hidden\" value=\"{1}\">" ,Inputs.Keys[i],Inputs[Inputs.Keys[i]])) ;
         }
        System.Web.HttpContext.Current.Response.Write( "</form>" ) ;
         System.Web.HttpContext.Current.Response.Write( "</body></html>" ) ;
         System.Web.HttpContext.Current.Response.End() ;
     }
}

digiguru 2008-10-31 11:17:37

Don't worry about sending the password back unencrypted - after all, that's the way it came to you. Also, you should put a Submit button and a message on there for non-JS users to click on.

Mark Brackett 2008-11-02 00:14:11

Thanks Mark. If someone posts the answer in it's entireity, I'll accept the answer.

digiguru 2008-11-03 09:27:01

Answer 2

+1 A:

Don't use the asp.net login control (if you are).

Use simple html for the user name/password textboxes in your user control without runat="server":

<input type="text" name="UserName" />

<input type="password" name="Userpassword" />

<asp:Button ID="btnLogin" runat="server" PostBackUrl="Destination.asp" />

Set the PostBackUrl property on the button to you classic asp url and all should be fine.

HectorMac 2008-10-31 13:31:37

Okay - but I'm guessing this means I can't do anything server side with the valuses for username and userpassword prior to submitting them?

digiguru 2008-10-31 15:14:57

Answer 3

+3 A:

You can't really "forward" a POST on, like you're wanting to do (in your OP). The client has to initiate the POST to your ASP page(s) (which the code in your second post is doing).

Here's the self-POSTing code from your own reply so you can mark an answer, like you suggested:

public class  RemotePost{
     private  System.Collections.Specialized.NameValueCollection Inputs 
     = new  System.Collections.Specialized.NameValueCollection() ;

    public string  Url  =  "" ;
    public string  Method  =  "post" ;
    public string  FormName  =  "form1" ;

    public void  Add( string  name, string value ){
        Inputs.Add(name, value ) ;
     }

     public void  Post(){
        System.Web.HttpContext.Current.Response.Clear() ;

         System.Web.HttpContext.Current.Response.Write( "<html><head>" ) ;

         System.Web.HttpContext.Current.Response.Write( string .Format( "</head><body onload=\"document.{0}.submit()\">" ,FormName)) ;

         System.Web.HttpContext.Current.Response.Write( string .Format( "<form name=\"{0}\" method=\"{1}\" action=\"{2}\" >" ,

        FormName,Method,Url)) ;
            for ( int  i = 0 ; i< Inputs.Keys.Count ; i++){
            System.Web.HttpContext.Current.Response.Write( string .Format( "<input name=\"{0}\" type=\"hidden\" value=\"{1}\">" ,Inputs.Keys[i],Inputs[Inputs.Keys[i]])) ;
         }
        System.Web.HttpContext.Current.Response.Write( "</form>" ) ;
         System.Web.HttpContext.Current.Response.Write( "</body></html>" ) ;
         System.Web.HttpContext.Current.Response.End() ;
     }
}

sliderhouserules 2008-11-01 21:30:19

This is a good post. If you put a description of the answer with the relevant code from below i'll mark it as the answer (you can't mark your own answers as the accepted answer) - that is unless anyone else gets a better answer.

digiguru 2008-11-03 09:26:07

Answer 4

A:

is there any simple illustration ?

2008-11-27 15:28:27

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How to post a page from asp.net to classic ASP

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