When running this code:
using System;
using System.Text.RegularExpressions;
namespace WebAutomationDemo
{
public class ExtractDigitsFromString
{
public static void Main(string[] args)
{
string inputData = "No 38, Bunder Garden Street, Perambur, Chennai - 600011";
var data = Regex.Match(inputData, "/s([a - z][A - Z]) +/s -/s/d[6]").Value;
Console.WriteLine(data);
Console.ReadLine();
}
}
}
I get the following error:
The type or namespace name 'RegularExpressions' does not exist in the namespace 'System.Text' (are you missing an assembly reference?)
This happens even after referencing System.Text.RegularExpressions assembly.
Are you still facing the same error,may be your assembly System is missing RegularExpressions method as stated by many.
Goto Object browser i.e click on any project solutions's references(expand) open any assembly will take it to take object browser window.
Now check whether the System.Text contains the RegualrExpressions method.
Object browser
If you follow the link there is an image of my object browser that do contains System.Text.RegularExpressions assembly.
If its missing ,download a valid assembly from MSDN
Below is one of link for a System.dll,download it or google it you can downlaod it easily.
https://www.dllme.com/dll/files/system_dll.html
Then goto references of your project and then add the downloaded assembly.
Related
I use a third party dll which does not use namespace, it contains a enum named Speaker.
// Decompiled with JetBrains decompiler
// Type: Speaker
// Assembly: StreamSDK, Version=1.0.6782.19546, Culture=neutral,PublicKeyToken=null
// MVID: 82353EB3-505A-4A47-8EEB-ED74ED4FC9B9
// Assembly location: /Users/haha/test/Assets/_ThirdParty/SteamSDK/Core/XMLSerializer/StreamSDK.dll
public enum Speaker
{
remote,
local,
none,
}
My local project also has this class name under a specified namespace Photon.Voice.Unity;. After I import the dll, error happens because the compiler treats the local Speaker as the third party's Speaker.
I already use namespace in my local project:
using Photon.Voice.Unity;
Error happens in the following codes :
private void OnSpeakerCreated(Speaker speaker)
{
speaker.gameObject.transform.SetParent(this.RemoteVoicesPanel, false);
}
The error:
error CS1061: 'Speaker' does not contain a definition for 'gameObject' and no accessible extension method 'gameObject' accepting a first argument of type 'Speaker' could be found (are you missing a using directive or an assembly reference?)
After I add the full namespace, the codes are passed.
private void OnSpeakerCreated(Photon.Voice.Unity.Speaker speaker)
{
speaker.gameObject.transform.SetParent(this.RemoteVoicesPanel, false);
}
But I don't want to do that I just want to ban the use of the third party Speaker in the specified cs files or any other ways that I don't need to change the current codes.
If you are just lazy to write Photon.Voice.Unity.Speaker every time, you can create an alias for using a using alias directive:
using PhotonSpeaker = Photon.Voice.Unity.Speaker;
Now you can write:
private void OnSpeakerCreated(PhotonSpeaker speaker)
{
speaker.gameObject.transform.SetParent(this.RemoteVoicesPanel, false);
}
I have two projects in the same solution and I have linked a class DatabaseFunctions.cs to the second one.
The problem is that when I reference it in the GUI_Teacher.cs I get the error:
Error CS0246 The type or namespace name 'DatabaseFunctions' could not be found (are you missing a using directive or an assembly reference?) Teachers application C:\Users\user1\source\repos\IASLSN\Teachers application\GUI_Teacher.cs
From the error, you are simply missing a reference.
Take the following steps to add a reference
Right click on the GUI_Teacher.cs project and click on Add Reference
From the left side of the Add Reference dialog, click on Solution
Select DatabaseFunctions.cs from the list and click OK to close the dialog.
In the source file DatabaseFunctions.cs you have something like
using System;
namespace SomeNamespaceName
{
public class DatabaseFunctions
{
}
}
To use the class in your GUI_Teacher.cs source file you need to add either using SomeNamespaceName; at the top or use the fully qualified type name SomeNamespaceName.DatabaseFunctions instead.
Keep in mind that the name of a sourcecode file like your DatabaseFunctions.cs for example has no connection to the name of a class or a namespace in that file. You can put a class like public class DatabaseFunctions { } in a file called foo.cs. And in the using directive at the top of your sourcefiles you provide a namespace and not a filename.
I got a compile error using Fizzler lib (http://code.google.com/p/fizzler/) in Monodevelop IDE under Ubuntu 10.
I added .Net Assembly References and autocompletion works file, but error during the compilation occurred.
Code here:
using System;
using Fizzler.Systems.HtmlAgilityPack;
using HtmlAgilityPack;
using System.Collections.Generic;
namespace test
{
class MainClass
{
public static void Main (string[] args)
{
HtmlAgilityPack.HtmlDocument html = new HtmlAgilityPack.HtmlDocument();
html.LoadHtml(#"some html");
HtmlAgilityPack.HtmlNode document = html.DocumentNode;
document.QuerySelector("a");
}
}
}
Error CS1061: Type HtmlAgilityPack.HtmlNode' does not contain a definition forQuerySelector' and no extension method QuerySelector' of typeHtmlAgilityPack.HtmlNode' could be found (are you missing a using directive or an assembly reference?) (CS1061) (test)
Are your HtmlAgilityPack.HtmlNode has that definition provided? Check again the API documentation. Please the error is clear by itself.
You may have found the answer to this question by now but I will post one anyway, since people may come across this page while looking for an answer.
Replace:
using Fizzler.Systems.HtmlAgilityPack;
with:
using myFizzler= Fizzler.Systems.HtmlAgilityPack.HtmlNodeSelection;
and call it like this in your project:
HtmlNode h2 = myFizzler.QuerySelector(document, "#fbTimelineHeadline h2");
I hope this helps.
I am getting this error Error 4 The type or namespace name 'Sample' could not be found (are you missing a using directive or an assembly reference?) F:\oadmin\sea\Controls\Dlg.cs 11 7 Controls
here i added Samplein reference section,,,then i used it as Using Sample,,i dont know why i am getting this error
this is the class
namespace sample
{
public class Server
{
public class client
{
Bool sent = true
}
}
}
Can i share exe,,this Sample is an exe
Perhaps because your namespace is sample and not Sample?
So if your Dlg namespace is different it needs to have a using sample line not using Sample.
Or perhaps your class is in another project within your solution and you need to include the hierarchy of namespaces?
Your namespace "sample" is lowercase, but you are referring to it in uppercase "Sample" ...
EDIT: You Bool sent is internal, it cannot be accessed from outside of the assembly
If you have a assembly identity/namespace of Library.Testing.
Then you created another assembly with identity/namespace of Library.Testing.One
Library.Testing.One project references Library.Testing.
Why is it you have to use using Library.Testing; in your classes in Library.Testing.One to access anything in Library.Testing?
Example1:
using System;
namespace Library.Testing.One
{
// 'Library.Testing' is a reference in this assembly
public class foo : Library.Testing.BooBase
{
}
}
This does not work I get two exception
Warning 1 Load of property
'RootNamespace' failed. The string
for the root namespace must be a valid
identifier. Error 2 The type or
namespace name 'BooBase' does not
exist in the namespace
'Library.Testing.One.Library.Testing'
(are you missing an assembly
reference?)
Example2:
using System;
using Library.Testing;
namespace Library.Testing.One
{
// 'Library.Testing' is a reference in this assembly
public class foo : Library.Testing.BooBase
{
}
}
This works!
Adding a "using" for Library.Testing.One does not automatically bring everything in Library and Library.Testing into scope. The fact that the namespaces appear to be hierarchical is probably what's leading to your confusion.
Think of, for example, adding using System.Data.SqlClient to a file. That doesn't automatically bring everything in System and System.Data into scope.