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

Demonstrates how to update the contents of a SharePoint file.

Chilkat for Delphi Downloads

Chilkat non-ActiveX DLL for Delphi

Chilkat ActiveX DLL for Delphi

* The examples here use the non-ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Http, HttpRequest, HttpResponse, JsonObject;

...

procedure TForm1.Button1Click(Sender: TObject);
var
http: HCkHttp;
req: HCkHttpRequest;
bUseTls: Boolean;
resp: HCkHttpResponse;
json: HCkJsonObject;

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

http := CkHttp_Create();

//  If SharePoint Windows classic authentication is used, then set the
//  Login, Password, LoginDomain, and NtlmAuth properties.
CkHttp_putLogin(http,'SHAREPOINT_USERNAME');
CkHttp_putPassword(http,'SHAREPOINT_PASSWORD');
CkHttp_putLoginDomain(http,'SHAREPOINT_NTLM_DOMAIN');
CkHttp_putNtlmAuth(http,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

//  Indicate that we want a JSON reply
CkHttp_putAccept(http,'application/json;odata=verbose');

//  Update /Documents/ChilkatTest/sample.docx with new content...
req := CkHttpRequest_Create();
CkHttpRequest_putHttpVerb(req,'POST');
CkHttpRequest_putPath(req,'/_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.
CkHttpRequest_StreamBodyFromFile(req,'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
CkHttpRequest_AddHeader(req,'X-RequestDigest','SHAREPOINT_FORM_DIGEST');

//  Also need to add this header..
CkHttpRequest_AddHeader(req,'X-HTTP-Method','PUT');

//  Upload..
bUseTls := True;
resp := CkHttp_SynchronousRequest(http,'SHAREPOINT_HTTPS_DOMAIN',443,bUseTls,req);
if (CkHttp_getLastMethodSuccess(http) <> True) then
  begin
    Memo1.Lines.Add(CkHttp__lastErrorText(http));
    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 (CkHttpResponse_getStatusCode(resp) <> 204) then
  begin
    Memo1.Lines.Add('Response status code = ' + IntToStr(CkHttpResponse_getStatusCode(resp)));
    json := CkJsonObject_Create();
    CkJsonObject_Load(json,CkHttpResponse__bodyStr(resp));
CkJsonObject_putEmitCompact(json,False);
    Memo1.Lines.Add(CkJsonObject__emit(json));
    Memo1.Lines.Add('Failed');
    CkHttpResponse_Dispose(resp);
    Exit;
  end;

CkHttpResponse_Dispose(resp);

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

CkHttp_Dispose(http);
CkHttpRequest_Dispose(req);
    CkJsonObject_Dispose(json);

end;

 

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