I'm trying to write some WMI in my windows form and the ManagementObject is givin me the
"The type or namespace name 'ManagementObject' could not be found" Error
Here is my un-complete code:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Threading;
using System.Security.Policy;
using System.Management;
using System.Management.Instrumentation;
namespace ConsoleApplication2
{
class Program
{
static void Main(string[] args)
{
ManagementObject disk = new ManagementObject("Win32_LogicalDisk.DeviceID=\"C:\"");
Right-click References on the right and manually add System.Management. Even though I included it in the using statement I still had to do this. Once I did, all worked fine.
Have you added a reference to the System.Management assembly?
In Solution Explorer, right click on References, then Add Reference ... and under Framework, you should activate the System.Management framework.
You need to add a reference to System.Management.dll to your project.
You can see System.Management.Instrumentation without adding a reference to System.Management.dll because it is included in a different library (System.Core.dll, which is included as a reference automatically), but you cannot access the other types contained by that namespace without explicitly adding a reference to the System.Management.dll library.
~ just add System.management using nuget manager,
It worked for me! c#
I think the problem is there is no WMI object for Win32_LogicalDisk.DeviceID=\"C:\".
Try to replace:
ManagementObject disk = new ManagementObject("Win32_LogicalDisk.DeviceID=\"C:\"");
with:
ManagementObject disk = new ManagementObject("Win32_LogicalDisk");
and then to step through each field:
foreach (ManagementObject o in disk.Get()){
//Do what ever you need here.... For example:
Console.WriteLine(o.ToString());
}
Make sure your project isn't set up to compile against the .NET 4 Framework Client Profile.
Please see Namespace not recognized (even though it is there) for more details.
The version of Visual Studio that I have does not import ManagementObjectSearcher by importing "System.Management" namespace. If you have the same issue, try adding a reference to "System.Management.dll' by doing the following steps.
Click on project properties on solution explorer in Visual Studio.
Go to "References".
Click on "Add" to add a new reference.
Click on "Browse...".
Navigate to "C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727".
Add a reference to "C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\System.Management.dll".
This is quite an old post but I just had to troubleshoot this. The only way I got it working with Visual Basic 2022 was to download and install through the NuGet Installer. Manually adding the .dll did not work for me. Once NuGet Manager is open Search: System.Management and download the latest from Microsoft, hope this helps someone.
Related
Here is the code that I'm looking at -
using System;
using System.Collections.Generic;
using System.Text;
using System.Data.SqlClient;
namespace CSharpPracticeProject
{
class Testing
{
public static void main()
{
SqlConnection myConnection = null;
int x = 25;
Console.WriteLine(x/4);
}
}
}
Error message - 'The type or namespace 'SqlConnection' could not be found.
It seems like other posts seem to solve the issue with the import, so Im just not sure what the issue is. This is Microsoft Visual Studio 2017.
I'm going to assume that you're using .NET Core, since it should work out the box with the code you have if you're using .NET Framework.
In .NET Core, you need to add a reference to System.Data.SqlClient via NuGet:
Select Tools | NuGet Package Manager | Manage NuGet Packages for Solution
Click "Browse"
Type System.Data.SqlClient and hit return
Select System.Data.SqlClient by Microsoft
On the panel on the right, check your project.
Click Install
Click OK to the next box that comes up.
Your code should now work.
If you're using .NET Framework, which seems unlikely given the problem you're facing, you can check if you have System.Data referenced by right-clicking "References" in the Solution Explorer, selecting "Assemblies" and ensuring that "System.Data" is checked.
I'm used C# -some- but not recently.
I've got this header from some code, and it calls a custom non-system library, (Dynastream.Fit, at the bottom), but I need to know how to tell the program where it resides so it can compile. Pretty sure the library is in the SDK I downloaded, just need to find it. This is the FitSDK from ANT+.
using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Diagnostics;
using Dynastream.Fit;
You need to add the dll of Dynastream.Fit to your project Reference folder by right clicking the reference folder -> add reference -> Browse -> choose the dll; unless you have already installed the assembly in GAC.
I'm writing a C# Console Application that is targeted towards .Net 4.5. I want to use Xaml Services to save and read a List data structure to file. I'm using VS 2013 Pro.
The .net doc's say Xaml has been in .NET since 4.0(?) I have my projected targeted to 4.5, but even with 4.0, 4.5.1, 4.6, and 4.6.1... same missing assembly reference. I'm doing a
using System;
using System.Collections.Generic;
using System.IO;
using System.Xaml; // <-- this is getting the assembly error
using System.Xml;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
But that is where the missing reference is getting the error...
I've used it before in Win Forms. It is that maybe it's excluded for console applications? Or am I missing something that Xaml Class depends on before using that assembly?
Could it be that you did not add a project reference to the assembly "System.Xaml.dll"? The Xaml functionality is not contained in the assemblies which are included in a new VS console project by default. (Right-Click on the "References" entry of the project, then select "Add References", then browse to "Framework" and look for System.Xaml, which refers to the dll of that name).
A namespace however does not necessarily correspond uniquely to an assembly, so you might require even more assemblies. If you know which types you need, you can browse the MSDN documentation for looking which assembly might still be required.
I am working with Visual studio 2008. What libraries should be used when using WMI. I have imported many libraries but they don't work
ConnectionOptions options = new ConnectionOptions();
I am using these Namespaces:
using System.Management;
using System.Security;
You may want to add a reference to System.Management too.
Please find more information here on this MSDN article :
Someone faced similar issues and solved it by adding a reference to the dll.
I'm doing some exercises with C# in the trial version of VS 2012. I want to execute a cmd command from a CS file. For this, I've tried Process.Start as well as System.Diagnostics.Process that are mentioned in these posts:
Run Command Prompt Commands
Execute CMD command from code
However, despite I added "using System.Diagnostics" and "using System.ComponentModel", I'm still getting "The type or namespace name 'Process' does not exist in the namespace 'System.Diagnostics', missing assembly reference" error. ¿Any suggestion so I can i get rid of this error? Thanks in advance.
This usually happens when you have Target framework = .NET Framework Client Profile, but DLL you reference is from .NET Framework (full). Make sure you have System.dll in your references from valid framework.
I just did the same - created empty console application with the following code:
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.ComponentModel;
using System.Linq;
using System.Text;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
var prc = Process.Start("explorer.exe");
}
}
}
Works perfectly fine for me.
Additional thing to check is Intellisense - when you start typing "System.Diagnostics.Proc"... - does it show you dropdown with "Process" there?
UPDATE:
Windows Store projects are based on different version of target .NET Framework - .NET for Windows Store apps, which does not support functionality you need.
For more details do web search:".NET for Windows Store apps". Helpful links:
http://msdn.microsoft.com/en-us/library/windows/apps/br230302.aspx
http://msdn.microsoft.com/en-us/library/windows/apps/br230232.aspx