Sharepoint 2016 Rest API Authentication for on prem from .NET 6

Hi @Daniel Turan ,
You can use the SharePoint client object model (CSOM) to retrieve, update, and manage data in SharePoint.
Step 1: Download the latest SharePoint Client Components SDK from Microsoft and install on your local computer.

Step 2: Add references of the portable dlls in your new project, location should be like this C:\Program Files\Common Files\microsoft shared\Web Server Extensions\16\ISAPI.

Step 3: Refer to following code.

using System;  
using System.Collections.Generic;  
using System.Net;  
using System.Text;  
using Microsoft.SharePoint.Client;  
namespace ContosoConsole  
{  
class Repository  
{  
public void GetApprovedAppsByView(string siteUrl, NetworkCredential credentials, string listName, string viewName, string camlQuery)  
{  
try  
{  
using (var context = new ClientContext(siteUrl))  
{  
context.Credentials = credentials;  
List list = context.Web.Lists.GetByTitle(listName);  
View view = list.Views.GetByTitle(viewName);  
context.Load(view);  
CamlQuery query = new CamlQuery();  
if (context.HasPendingRequest)  
{  
context.ExecuteQueryAsync()  
.Wait();  
}  
query.ViewXml = string.Format("<View><Query>{0}{1}</Query></View>", view.ViewQuery, camlQuery);  
ListItemCollection items = list.GetItems(query);  
context.Load(items);  
if (context.HasPendingRequest)  
{  
context.ExecuteQueryAsync()  
.Wait();  
}  
foreach (ListItem listItem in items)  
{  
Console.WriteLine(listItem["Title"]);  
}  
Console.ReadKey();  
}  
}  
catch (Exception ex)  
{  
Console.WriteLine("Error Message: " + ex.Message);  
Console.ReadKey();  
}  
}  
}  
}  

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