I have found this link:
Detect Antivirus on Windows using C#
However when I try this code in visual c# express edition 2008 it says :
Error 1 The type or namespace name 'ManagementObjectSearcher' could not be found
(are you missing a using directive or an assembly reference?)
C:\Users\Andy\Documents\Visual Studio 2008\Projects\ConsoleApplication1\ConsoleApplication1\Program.cs 15 17 ConsoleApplication1
Amongst other similar errors on the 2 lines which seem important!
Looks like the code segment is missing some imports or something?
I am using Windows 7... Please help!
Andy
You are missing a reference to the assembly containing the type ManagementObjectSearcher, which is in the System.Managementnamespace. Add this namespace and it should work.
You will have to rightclick the project -> add reference and add the System.Management assembly. System.Managment is not added automatically with the creation of a new project.
WMI reference
WMI + C#
Related
My question in simple few lines:
I'm trying to build a compiled .dll C# Class Library that contains functions I want to easily call from other non-C# applications.
My functions depend on popular namespaces' Assemblies references like System.Windows.Forms and Microsoft.Office.Interop.OneNote.
When I try to add any of them to my class library, I get does not exist in the namespace error.
Also, they don't exist in Reference Manager (Screenshot 2).
Continued description:
Within normal C# application (that's compiled to .exe), I can easily include those Assemblies references using code lines like below:
using System.Windows.Forms; // works good in normal application
using Microsoft.Office.Interop.OneNote;
Also I am able to add References with References Manager (by right clicking the References node on Solution Explorer → then Select Add Reference → then search for the references I want to add) — in Visual Studio 2019 (Screenshot 1). I can find and add assemblies like System.Windows.Forms and Microsoft.Office.Interop.OneNote easily.
But within a C# Class Library (that's compiled to .dll), when I try to include System.Windows.Forms and Microsoft.Office.Interop.OneNote using the below lines:
using System.Windows.Forms; // gives errors in C# Class Library
using Microsoft.Office.Interop.OneNote;
I get errors:
CS0234 The type or namespace name 'Forms' does not exist in the namespace 'System.Windows' (are you missing an assembly reference?) MyLibrary C:\Path\to\MyLibrary\Class1.cs
CS0234The type or namespace name 'Office' does not exist in the namespace 'Microsoft' (are you missing an assembly reference?) OneNoteLibrary C:\Path\to\MyLibrary\Class1.cs 15 Active
Also, these assemblies aren't shown at all when I try to add using References Manager (Screenshot 2).
Screenshot 1:
Screenshot 2:
Screenshot 3:
I want to run the Xamarin project and did all the updates. When I run the project I get the following error
The type or namespace name 'Windows' could not be found (are you missing a using directive or an assembly reference?)
for the lines
using Windows.Storage;
using Windows.ApplicationModel.ExtendedExecution;
That's because you're missing these .dll
The recommended steps to get access to UWP APIs are listed in the dedicated blog post on Windows Blog.
Basically you can take two approaches: add the references to UWP dlls and winmd files manually or use the UwpDesktop NuGet package that will take care of this for you automatically.
For more details, you can check: How do I get access to Windows.Storage namespace?
There is an issue with my visual studio. When i try to generate the edmx file it does all the process very well. But as soon as i try to build the solution it throws so many errors. I am not sure if this issue is with visual studio orentity framework.
Please check the image i have attached, and the errors as well.
Here are the errors..
Error 7 A using namespace directive can only be applied to namespaces;
'System' is a type not a namespace
Error 73 The type or namespace name 'DbContext' could not be found
(are you missing a using directive or an assembly reference?)
There are so many errors.
Please help
Try to clean contents of ".vs" folder in the root of solution
I have a Xamarin.Forms application and I need to be able to manage a DB. I'm developing in Microsoft Visual Studio 2017 and I'm following this tutorial dor the SQLite: https://msdn.microsoft.com/en-us/magazine/mt736454.aspx
The problem is that when I get to the point: Figure 6 Generating a Connection String in the Universal Windows Project, that is to say implementing the DatabaseConnection_UWP.cs class. There I get some errors:
using LocalDataAccess.UWP;
Here it says: The type or namespace name "LocalDataAccess" could not be found (ar you missing a using directive or an assembly reference?)
And in the line:
[assembly: Dependency(typeof(DatabaseConnection_UWP))]
It says: The type or namespace name "DatabaseConnection_UWP" could not be found (ar you missing a using directive or an assembly reference?)
The code is exactly the same, all I have done is to copy-paste from the tutorial.
Solved it following a different tutorial that worked perfectly: https://developer.xamarin.com/guides/xamarin-forms/application-fundamentals/databases/
The type or namespace name 'XmlConfigurator' could not be found (are you missing a using directive or an assembly reference?)
Am I missing a namespace???
You have to add log4net.dll to your project and the using log4net.Config; namespace
Your missing dll. Right click on your project and Add Reference... point to correct dll.
There is the possibility that you have not added the dll. This would require right clicking your project and adding the reference DLL. There is one other step that wasn't mentioned in the previous answers that I found relevant.
There is the possibility that you are not using the correct runtime. I found that log4net requires a full profile. For instance the client profile for .NET 4 will generate this error but if you use the full profile you will not experience this.