ASP check request method

Question

How do i check if my form has been submitted in classic ASP?

this is an unclear question. what do you want to know ? if the form left the client on its way to the server when you pressed submit ? was the data received as a form (post) and not query string data (get) ? was the data processed by the server with no errors ? too many options here. — shayuna, Jul 08 '20 at 18:02

score 27 · Accepted Answer · answered Jan 24 '10 at 20:00

27

First, you can check, if Request.ServerVariables("REQUEST_METHOD")= "POST". That is, assuming, you use POST method to submit the form, the initial load will have GET method, the subsequent submits will be POST.

You can also add a hidden field in your form, if that variable is set in POST data (Request.Form object), you will know it is a postback, otherwise it is the first load.

answered Jan 24 '10 at 20:00

naivists

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Checking request method and referrer will give you something like PostBack :) – dariol Jan 24 '10 at 20:09

score 0 · Answer 2 · answered Sep 23 '19 at 00:16

Function IsPostBack()
  IsPostBack = false    
  If Request.ServerVariables("REQUEST_METHOD") <> "POST" Then
    Exit Function       
  End If
  Dim referer: referer = Request.ServerVariables("HTTP_REFERER")
  Dim current: current = Request.ServerVariables("HTTP_ORIGIN") & Request.ServerVariables("SCRIPT_NAME")
  Dim i: i = InStr(1, referer, "?", 1)
  If i > 1 Then
    referer  = Left(referer, i - 1)
  End If
  IsPostBack = LCase(current) = LCase(referer)
End Function

ASP check request method

2 Answers2

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