Classic ASP
SharePoint -- Update the Contents of a File (PUT)

Demonstrates how to update the contents of a SharePoint file.
Chilkat Classic ASP Downloads

Classic ASP
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<%
success = 0

' This requires the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

set http = Server.CreateObject("Chilkat.Http")

' If SharePoint Windows classic authentication is used, then set the 
' Login, Password, LoginDomain, and NtlmAuth properties.
http.Login = "SHAREPOINT_USERNAME"
http.Password = "SHAREPOINT_PASSWORD"
http.LoginDomain = "SHAREPOINT_NTLM_DOMAIN"
http.NtlmAuth = 1

' The more common case is to use SharePoint Online authentication (via the SPOIDCRL cookie).
' If so, do not set Login, Password, LoginDomain, and NtlmAuth, and instead
' establish the cookie as shown at SharePoint Online Authentication

' Indicate that we want a JSON reply
http.Accept = "application/json;odata=verbose"

' Update /Documents/ChilkatTest/sample.docx with new content...
set req = Server.CreateObject("Chilkat.HttpRequest")
req.HttpVerb = "POST"
req.Path = "/_api/web/GetFileByServerRelativeUrl('/Documents/ChilkatTest/sample.docx')/$value"
' Give the location of the file to be uploaded.  
' Note: The file is not loaded into memory at this point.  It is never fully loaded
' into memory.  Instead, the file data is streamed directly from the file when
' when the upload occurs.
success = req.StreamBodyFromFile("qa_data/msword/sample.docx")

' We need to add a form digest value in the X-RequestDigest header field.
' See this example for details on
' how to get (and cache) a form digest value
req.AddHeader "X-RequestDigest","SHAREPOINT_FORM_DIGEST"

' Also need to add this header..
req.AddHeader "X-HTTP-Method","PUT"

' Upload..
bUseTls = 1
set resp = Server.CreateObject("Chilkat.HttpResponse")
success = http.HttpSReq("SHAREPOINT_HTTPS_DOMAIN",443,bUseTls,req,resp)
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( http.LastErrorText) & "</pre>"
    Response.End
End If

' A successful update will return a 204 status code with an empty body.
' A non-successful update will return a JSON response body..
If (resp.StatusCode <> 204) Then
    Response.Write "<pre>" & Server.HTMLEncode( "Response status code = " & resp.StatusCode) & "</pre>"
    set json = Server.CreateObject("Chilkat.JsonObject")
    success = json.Load(resp.BodyStr)
    json.EmitCompact = 0
    Response.Write "<pre>" & Server.HTMLEncode( json.Emit()) & "</pre>"
    Response.Write "<pre>" & Server.HTMLEncode( "Failed") & "</pre>"
    Response.End
End If

Response.Write "<pre>" & Server.HTMLEncode( "Success.") & "</pre>"

%>
</body>
</html>