(Delphi ActiveX) SharePoint -- Update the Contents of a File (PUT)

Demonstrates how to update the contents of a SharePoint file.

Chilkat for Delphi Downloads Chilkat ActiveX DLL for Delphi Chilkat non-ActiveX DLL for Delphi * The examples here use the ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_TLB;

...

procedure TForm1.Button1Click(Sender: TObject);
var
http: TChilkatHttp;
req: TChilkatHttpRequest;
bUseTls: Integer;
resp: IChilkatHttpResponse;
json: TChilkatJsonObject;

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

http := TChilkatHttp.Create(Self);

// 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...
req := TChilkatHttpRequest.Create(Self);
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.
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;
resp := http.SynchronousRequest('SHAREPOINT_HTTPS_DOMAIN',443,bUseTls,req.ControlInterface);
if (http.LastMethodSuccess <> 1) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;

// 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
  begin
    Memo1.Lines.Add('Response status code = ' + IntToStr(resp.StatusCode));
    json := TChilkatJsonObject.Create(Self);
    json.Load(resp.BodyStr);
    json.EmitCompact := 0;
    Memo1.Lines.Add(json.Emit());
    Memo1.Lines.Add('Failed');

    Exit;
  end;

Memo1.Lines.Add('Success.');
end;