I have an error in my code "the type or namespace name 'spsite' could not be found" that I have no idea how to solve it

Question

I have write a code that contains SPSite and I got this error CS0246: The type or namespace name 'SPSite' could not be found (are you missing a using directive or an assembly reference?)

I have tried downloading Microsoft.SharePoint from the nuget site here https://www.nuget.org/packages/Microsoft.SharePoint.dll/ and then I have put the package in the right folder and still I have the same error

using System;
using System.Data;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

using System.IO;
using System.Text;
using System.Threading.Tasks;
using System.Security;
using System.Net;
using System.Configuration;
using System.Collections.Specialized;
using System.Runtime;
using Microsoft.SharePoint;
using System.Reflection;

using Microsoft.SharePoint.Client;
using SP = Microsoft.SharePoint.Client;
protected void getList()
   {
       string strUrl = "   SharePoint SITE     ";
       using (SPSite oSite = new SPSite(strUrl))
       {
           using (SPWeb oWeb = oSite.OpenWeb())
           {
               SPList list = oWeb.Lists["Workplan"];
               foreach (SPField field in list.Fields)
               {
                   Console.WriteLine(field.Title);
               }
           }
       }
   }

after adding the package that I download in the right place I expected for the error to fade away still it's there. Help please!

You shouldn't be manually putting packages in folders, installing a nuget package handles this for you. Did you try Install-Package ....? — Crowcoder
You have using SP = Microsoft.SharePoint.Client;, do you need SP.SPSite? — doctorlove
I don't know where I should be writting this : Install-Package Microsoft.SharePoint.dll -Version 15.0.4867.1000 — ChampagneM12
@ChampagneM12 SPSite is a server-side type but your code references the client libraries. You don't need SPSite to work with the client libraries at all. Did you copy some server-side code and tried to use it from a client perhaps? — Panagiotis Kanavos
@ChampagneM12 you don't need and can't add that assembly as if it were a package. You can't write code by blindly copying snippets. The docs show how to use the client API. It's a lot easier than using the server API — Panagiotis Kanavos

Eliahu Aaron Eliahu Aaron · Accepted Answer · 2019-05-14T11:48:18

Install the nuget package, its the best way to use it. You can install with Package Manager UI (Visual Studio) or Package Manager Console (Visual Studio) see hear.

Note 1: SPSite, SPWeb, SPList and SPField are classes in namespace Microsoft.SharePoint.

Note 2: you have in your code: using Microsoft.SharePoint; and using Microsoft.SharePoint.Client;, Microsoft.SharePoint and Microsoft.SharePoint.Client are two different nuget packages.

Yue

I have an error in my code "the type or namespace name 'spsite' could not be found" that I have no idea how to solve it

2 Answers