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Is it possible to use 'HttpRuntime' in a NUnit project?

I'm following a guide to write output data from Visual Studio into a google spreadsheet. I'm using a NUnit project type for test-automation purposes.
At the end of the guide there is a code block that I pasted inside my project:
using OpenQA.Selenium.Support.UI;
using System;
using NUnit.Framework;
using OpenQA.Selenium;
using System.Collections;
using System.Collections.Generic;
using Google.Apis.Sheets.v4;
using Google.Apis.Auth.OAuth2;
using System.IO;
using Google.Apis.Services;
using Newtonsoft.Json;
using WikipediaTests.Foundation_Class;
namespace AutomationProjects
{
[TestFixture]
public class TestClass : TestFoundation
{
public class SpreadSheetConnector
{
//Codeblock from guide pasted here!
}
[Test]
public void test1()
{
//Test case 1. Do XYZ...
}
}
}
In the code block included in the guide there is a section that reads the JSON credential file:
private void ConnectToGoogle()
{
GoogleCredential credential;
using (var stream = new FileStream(Path.Combine(HttpRuntime.BinDirectory, "Export Project-03e8aa07234e.json"),
FileMode.Open, FileAccess.Read))
{
credential = GoogleCredential.FromStream(stream).CreateScoped(_scopes);
}
//...
But I get an error for the 'HttpRuntime' saying: Error CS0103 The name 'HttpRuntime' does not exist in the current context
There is no suggestion from VS to add a new 'using' reference so I'm assuming that is not the problem.
So what could be the problem? To whole codeblock from the: guide

Short answer - yes.
Long answer - I believe you need to add the System.Web dll here. C# projects do not add all dependencies by default -- rather, they provide you with a list of potential references, and let the user pick and choose on an as-needed basis.
Under your project, find the Dependencies section. Right click, and click Add Reference. Under Assemblies, find System.Web and check the box next to it, then click OK.
Once you add that, then you will need to add using System.Web to the top of your file.
This guide may help too: https://learn.microsoft.com/en-us/visualstudio/ide/how-to-add-or-remove-references-by-using-the-reference-manager?view=vs-2019

Namespace could not be found

It can be seen and compiled inside the same file it is in inside the same project, the file is called default.aspx.cs.
However when I try to include the namespace in another file of the same project using the using DBConnStrings; statement -> I keep getting the compiler error "The type or namespace name 'DBConnStrings' could not be found".
The Code in the file which compiles called default.aspx.cs is as follows:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using System.Configuration;
using System.Data;
using DBConnStrings;
namespace DBConnStrings
{
public class GlobalStrings
{
public static string carSalesDBConnString =
ConfigurationManager.ConnectionStrings["ConnectionString2"].ToString();
}
}
public void BindManu()
{
SqlConnection conn = new
SqlConnection(GlobalStrings.carSalesDBConnString); // Connect to Carsales database
conn.Open();
// .....
}
The other files can not see this namespace although they are in the same project.
How do I make them see it?

First of all, I'd suggest to put the method BindManu into the class, because I can't imagine this would work like that.
But to your problem: You have to specify the whole namespace. That means, if the file with the DBConnStrings namespace is in the folder test, you have to use using test.DBConnStrings to import the namespace. You should name the namespace like that as well to avoid confusion (namespace test.DBConnStrings).
But you actually don't have to specify the whole path, just the path within the project. That means, if your class is in C:\Users\Foo\Documents\Visual Studio 2017\Projects\BlaProject\DirectoryA\DirectoryB\MyClass with the project located in C:\Users\Foo\Documents\Visual Studio 2017\Projects\BlaProject, your namespace would be BlaProject.DirectoryA.DirectoryB. If the file your using isn't in your project folder, then you have to add a reference and use the path within the other project as above (but with another project name, obviously). If you want to add references, open the Solution Explorer, right click onto References, select add Reference, and select the reference to the project.
If you don't want to struggle with all that you can let vs do it for you. Simply type in the class you want from the other namespace, it will be marked as an error, click onto the lightbulb and select something like add using reference.
Furthermore, if you want to add a class to your project, don't do it with the explorer - simply right click onto the folder from your project you want to add the class to in your Solution Explorer, select Add, then New Item. In the popup select class and type in your name for the class. That's it!

System.Xml in visual studio not working

I am trying to process XML with C# in Visual Studio and it will not allow me to import System.Xml. I looked at other posts about this problem and this was usually caused by misspelling System.Xml to System.XML. I have the right spelling so I am not sure what is causing me problems. I looked under references and there is no System.Xml and I am using Visual Studio 2013 The error message was
Error 1 The type or namespace name 'Xml' does not exist in the namespace 'System' (are you missing an assembly reference?)
Do I have to download System.Xml?
Here is the code
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Xml;
namespace WebTesting
{
class Test1
{
public static void Main(string [] args)
{
using(XmlReader reader = XmlReader.Create("myData.Xml"))
{
while(reader.Reader())
{
if(reader.IsStartElement())
{
Console.Write("The start element is " + reader.ReadString());
}
}
}
Console.ReadLine();
}
}
}

You'll need to add an assembly reference. Right-click "References" under your project in Solution Explorer and select "Add Reference..." Switch to the .NET tab and find System.Xml. Click OK.

by using XDocument (in using System.Xml.Linq;) you'll get more flexible functionality to handling XML-documents

CS0234 - Cannot Instantiate C# class in ASP.NET

I made the same ASP.NET C# project in both VS2010 and MonoDevelop using these two classes among the standard files (Site.Master, Web.Config, Default.aspx, etc.) and recieve this same error (CS0234) seen at the bottom.
Login.cs:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using mynamespace;
namespace mynamespace
{
public partial class Logon
{
public void btnClicked(object sender, EventArgs e)
{
//ERROR IS HERE:
mynamespace.Test session = new mynamespace.Test();
//Obviously, this doesn't work either:
Response.Write(session.echoUser());
}
}
}
Test.cs:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using mynamespace;
namespace mynamespace
{
public class Test
{
public string echoUser()
{
return "foobar";
}
}
}
I recieve the same error in both IDEs, here is the MonoDevelop error:
The type or namespace 'Test' does not exist in the namespace 'mynamespace' (are you missing an assembly reference?) (CS0234) Logon.cs
Basically, the class Test refuses to instantiate. Any input is appreciated!

If you have that Test class in an ASP.Net web project, then you need to place it in the App_Code folder, not just anywhere in the site.

You need to refer the projects to each other, if you haven't done so yet. I'm guessing that you don't get the intellisense to show the class in the other namespace, right?
You can see the References on the right side (most cases) under your project view. You can right click there and choose to Add reference. Then you browse to the binaries from the pther projects. (You might be able to point to the project itself too - I don't have VS in front of me at the moment.)
Also, It's a convention to use camel case for namespaces, so it should be MyNameSpace.
If the classes are in the same project, you might want to skip using mynamespace and refer to the class by Test intead of mynamespace.Test.

If these are both in the same project, please check that both files are included in the project and have the "Build Action" property set to "Compile". Please also check that all of these namespaces have exactly matching spelling and casing.

The name 'ConfigurationManager' does not exist in the current context

Hi every one I am getting the following error: "The name 'ConfigurationManager' does not exist in the current context"
// namespaces
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Data.SqlClient;
using System.Configuration;
using System.IO;
namespace Database1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
public static string GetConnectionString(string strConnection)
{
//variable to hold our connection string for returning it
string strReturn = "";
//check to see if the user provided a connection string name
//this is for if your application has more than one connection string
if (!string.IsNullOrEmpty(strConnection)) //a connection string name was
{
//get the connection string by the name provided
strReturn = ConfigurationManager.ConnectionStrings[strConnection].ConnectionString;
}
else //no connection string name was provided
{
//get the default connection string
strReturn = ConfigurationManager.ConnectionStrings["YourConnectionName"].ConnectionString;
}
//return the connection string to the calling method
return strReturn;
}
}
}

Have you added a reference to System.Configuration.dll?

You have to add reference to System.Configuration.dll
When you right click and click on the Add reference button
Click .Net tab in the open popup
There you should be able to locate the System.Configuration.dll file

This is the path:
C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.0\System.Configuration.dll
also you can add reference to the :System:
C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.0\System.Configuration.Install.dll
(hope it helps :))

Which version of .NET Framework and Visual Studio are you using?
ConfigurationManager is only available in .NET 2 and above. If you are using .NET Framework 1.x and Visual Studio 2002/2003, you won't be able to use this class at all.
http://msdn.microsoft.com/en-us/library/system.configuration.configurationmanager.aspx
Click "Other versions" link in the top of this page and you will see all versions it supports.

I ran into same issue using .Net Core, but using .NET Running Install-Package System.Configuration.ConfigurationManager in Package manager solved it for me.