How to upload a file from my local computer to a Sharepoint folder

Question

Hi,



I´m using something like this:





string userName = “nelson.soares@********.pt”;

string password = “*********”;

var securePassword = new SecureString();





foreach (char c in password)

{

 securePassword.AppendChar(c);

}



using (var clientContext = new ClientContext(“https://.sharepoint.com/sites/***/”))

{

 clientContext.Credentials = new NetworkCredential(userName, securePassword);

 Web web = clientContext.Web;

 clientContext.Load(web, a => a.ServerRelativeUrl);

 //clientContext.ExecuteQuery();

 Microsoft.SharePoint.Client.List documentsList = clientContext.Web.Lists.GetByTitle(“01.Diários”);



 var fileCreationInformation = new FileCreationInformation();

 //Assign to content byte[] i.e. documentStream



 fileCreationInformation.Content = System.IO.File.ReadAllBytes(@”C:\test\1. Verificar ficheiros ATM, VivaGO.xlsx”);

 //Allow owerwrite of document



 fileCreationInformation.Overwrite = true;

 //Upload URL



 fileCreationInformation.Url = “https://****.sharepoint.com/sites/*****/Documentos/General/Reports/02.DFP_e_DMC/”;



 Microsoft.SharePoint.Client.File uploadFile = documentsList.RootFolder.Files.Add(fileCreationInformation);



 //Update the metadata for a field having name “DocType”

 uploadFile.ListItemAllFields[“Title”] = “UploadedviaCSOM”;



 uploadFile.ListItemAllFields.Update();

 clientContext.ExecuteQuery(enter code here);



}



string userName = “nelson.soares@********.pt”;

string password = “*********”;

var securePassword = new SecureString();





foreach (char c in password)

{

 securePassword.AppendChar(c);

}



using (var clientContext = new ClientContext(“https://.sharepoint.com/sites/***/”))

{

 clientContext.Credentials = new NetworkCredential(userName, securePassword);

 Web web = clientContext.Web;

 clientContext.Load(web, a => a.ServerRelativeUrl);

 //clientContext.ExecuteQuery();

 Microsoft.SharePoint.Client.List documentsList = clientContext.Web.Lists.GetByTitle(“01.Diários”);



 var fileCreationInformation = new FileCreationInformation();

 //Assign to content byte[] i.e. documentStream



 fileCreationInformation.Content = System.IO.File.ReadAllBytes(@”C:\test\1. Verificar ficheiros ATM, VivaGO.xlsx”);

 //Allow owerwrite of document



 fileCreationInformation.Overwrite = true;

 //Upload URL



 fileCreationInformation.Url = “https://****.sharepoint.com/sites/*****/Documentos/General/Reports/02.DFP_e_DMC/”;



 Microsoft.SharePoint.Client.File uploadFile = documentsList.RootFolder.Files.Add(fileCreationInformation);



 //Update the metadata for a field having name “DocType”

 uploadFile.ListItemAllFields[“Title”] = “UploadedviaCSOM”;



 uploadFile.ListItemAllFields.Update();

 clientContext.ExecuteQuery(enter code here);



}







But it returns 403 Forbidden error.

I´m conected throw VPN and i have MFA account, otherwise I can´t conect to sharepoint, and all the user/pass are corret.

Can you please help to understand the reason thats not working please?

#Read more: https://www.sharepointdiary.com/2012/04/how-to-programmatically-upload-file-to-sharepoint-library.html#ixzz8y65GT87f

Answer 1

Hi @Nelson Soares ,

Welcome to Q&A forum! Happy to assist you on this issue.

According to the information you provided, it seems that you are using SharePoint Online, but the reference link you provided is for SharePoint Server. Please confirm that for SharePoint Online, you can directly drag and drop files or click Upload to upload them. If you want to use code, you are recommended to use PowerShell.

Reference:

https://www.sharepointdiary.com/2016/06/upload-files-to-sharepoint-online-using-powershell.html

Non-official, just for business.

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