VB.NET

SharePoint -- Delete a File

Demonstrates how to delete a SharePoint file. VB.NET

Dim success As Boolean = False

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

Dim http As New 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 = True

' 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

' This example will delete the file named "penguins2.jpg" 
' which is located in the "/Documents" folder.

Dim req As New Chilkat.HttpRequest
req.HttpVerb = "POST"
req.Path = "/_api/web/GetFileByServerRelativeUrl('/Documents/penguins2.jpg')"

' 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")

' Add additional required headers.
req.AddHeader("IF-MATCH","*")
req.AddHeader("X-HTTP-Method","DELETE")

' Send the POST using https (TLS). Port 443 is the default port for https.
Dim bUseTls As Boolean = True
Dim resp As New Chilkat.HttpResponse
success = http.HttpSReq("SHAREPOINT_HTTPS_DOMAIN",443,bUseTls,req,resp)
If (success = False) Then
    Debug.WriteLine(http.LastErrorText)
    Exit Sub
End If


' If failed, the response body contains XML 
Dim xml As New Chilkat.Xml
xml.LoadXml(resp.BodyStr)

If (resp.StatusCode <> 200) Then
    Debug.WriteLine("Response status code = " & resp.StatusCode)
    Debug.WriteLine(xml.GetXml())

    ' For example, if the file did not exist, this would be the XML response:
    ' <?xml version="1.0" encoding="utf-8" ?>
    ' <m:error xmlns:m="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata">
    '     <m:code>-2146232832, Microsoft.SharePoint.SPException</m:code>
    '     <m:message xml:lang="en-US">The file /Documents/penguins2.jpg does not exist.</m:message>
    ' </m:error>
    ' 

    Debug.WriteLine("Failed")
    Exit Sub
End If


' If successful, the response body is empty.
Debug.WriteLine("Success.")