List docs = web.Lists.GetByTitle("DOCUMENTS");

Microsoft.SharePoint.Client.File uploadFile = docs.RootFolder.Files.Add(newFile);

clientContext.ExecuteQuery();

clientContext.Load(uploadFile.ListItemAllFields, item => item["EncodedAbsUrl"]);

clientContext.ExecuteQuery();

var fileUrl = uploadFile.ListItemAllFields["EncodedAbsUrl"].ToString();

string link = ctx.Web.CreateAnonymousLinkForDocument(fileUrl, ExternalSharingDocumentOption.View);

string linkwithExpiration = ctx.Web.CreateAnonymousLinkWithExpirationForDocument(fileUrl, ExternalSharingDocumentOption.Edit, DateTime.Now.AddMonths(1));

SharingResult result = ctx.Web.ShareDocument(fileUrl, "reven@peakfinders.com", ExternalSharingDocumentOption.View, true, "Documents shared Sucessfully");

 var listTitle = "Site Pages";

var list = ctx.Web.Lists.GetByTitle(listTitle);

var items = list.GetItems(CamlQuery.CreateAllItemsQuery());

ctx.Load(items, icol => icol.Include( i => i["WikiField"], i => i["Roaf"], i => i["FileRef"], i => i.ContentType));

ctx.ExecuteQuery();

foreach (var item in items)

{

     Console.WriteLine(">>> {0}", item["FileRef"]);

     switch (item.ContentType.Name)

     {

        case "Site Page":

          Console.WriteLine(item["Roaf"]);

          break;

        case "Wiki Page":

          Console.WriteLine(item["WikiField"]);

          break;

     }    

 }

 headers: { "accept": "application/json", },

Instead using headers: { "accept": "application/json;odata=verbose", },

 https://www.microsoft.com/en-us/download/details.aspx?id=42038

Add-Type -Path 'C:\Program Files\Common Files\microsoft shared\Web Server Extensions\16\ISAPI\Microsoft.SharePoint.Client.dll'

Add-Type -Path 'C:\Program Files\Common Files\microsoft shared\Web Server Extensions\16\ISAPI\Microsoft.SharePoint.Client.Runtime.dll'   

•  Login your Office 365 account.
• Go to the SharePoint admin center.
• Select Settings.
• Under Custom Script choose:

• Prevent users from running custom script on personal sites or Allow users to run custom script on personal sites.
• Prevent users from running custom script on user created sites or Allow users to run custom script on self-service created sites.

var tenant = new Tenant(ctx);
    var SiteProp = tenant.GetSitePropertiesByUrl(http://devprasad007-admin.sharepoint.com, true);
    ctx.Load(SiteProp);
    ctx.ExecuteQuery();

    SiteProp.DenyAddAndCustomizePages = DenyAddAndCustomizePagesStatus.Disabled;
    var result = SiteProp.Update();
    ctx.Load(result);
    ctx.ExecuteQuery();
    while (!result.IsComplete)
    {
        Thread.Sleep(result.PollingInterval);
        ctx.Load(result);
        ctx.ExecuteQuery(); 

    }