I've 10 .cs files in my app_code folder. Now I want to convert all 10 class files into one dll. Is if possible?
I'm trying to convert it by using csc /t:library admin.cs --> like this
But it is showing error like The type of namespace dbConnection could not be found (Are you missing a using directive or an assembly refference? )
Why are you using the command line compiler?
You don't want to create a DLL - you want to create an Assembly. This is important because you need to know the terminology to solve this.
The code you're compiling has errors. The message you quote means that you are missing an assembly reference, or you are missing a "using" statement in admin.cs, or (most likely) there are syntax errors - in this case, dbConnection is being used in a context where it is not defined.
Do yourself a favor and open this up in visual studio. Create a new "class library" project (it's on the list available in the "new project" dialog) and add all of your .cs files to it. Compile, find the bugs, fix them.
Given the form of your question, you're obviously pretty new at C# and .NET. Use the tools that are available (namely, Visual Studio) and give it some time.
If you really want to use the command line compiler, you can list of the assemblies that you depend on with the /r option.
You can create a new Class Library project in your solution and move your code files into there. The Class Library project will compile into a single DLL.
Related
I am a recently converted VB developer to C#, but there is one thing thus far that I haven't been able to find. In VB when I setup a new project I can specify the namespaces used in the project and add them to the default imports for all classes (so everything automatically has them as if I added "Imports System.Data.OracleClient" to each class). With C# I've found that I'm always typing these in for each new class. Is there a way to setup defaults for projects so it at least appends those to every class file for me automatically?
No there is no way. C# does not support the concept of project level imports or project level namespaces.
The only thing you can do is alter the item template you are using (Class.cs or Code.cs) to have the namespaces you would like. These files are located under the following directory
%ProgramFiles%\Microsoft Visual Studio 9.0\Common7\IDE\itemtemplatescache\CSharp\Code\1033
Under here you should see a Class.zip and Code.zip directory each with a .cs file under them. This is the template file used when you do an "Add New Item" operation in Visual Studio. You can change these to meet your needs and have the default namespaces you'd like.
A slightly easier solution though is adding a per-user code file for the particular project you'd like. Simply create a code file you want to be the template for your application and then place it in the following directory.
C:\Users\YourUserName\Documents\Visual Studio 2008\Templates\ItemTemplates\Visual C#
This file will now show up whenever you do a "Add New Item" operation.
Others have suggested using templates etc. Personally I find it's just not a problem - I type the name of the class that I want to use into Visual Studio, and even if it's not found the "smart tag" (or whatever it's called) icon pops up. I hit Ctrl-. and it adds a using directive for me.
I think ReSharper helps to make this work even better, but it's so automatic for me now that I don't really think about it much any more. (I suspect the difference is that with ReSharper I can hit Alt-Enter at any point in the line and it'll offer the correction, instead of having to have the cursor in the type name itself for Visual Studio.)
With C# 10 this answer has changed.
C# 10 introduces [Global using directives][1]:
Global using directives
You can add the global modifier to any using directive to instruct the compiler that the directive applies to all source files in the compilation. This is typically all source files in a project.
no, there's no my namespaces in C#. I think you can probably accomplish the same thing with project templates or code snippets.
See this post for the answer..
Which, in a nutshell, is adding the usings you want to a template.
I believe you want to start here.
In C#, I made a ClassLibrary that has one Namespace and one Class.
I saved it and build it.
in other Projects, when i use it, I add it to my references by browsing to the .dll location.
But The Problem is that its name is not showing up in the Intellisense.
i.e when I: using ... my dll doesn't show ..
I'm Importing the library to a ConsoleApp.
both of the App and the library target Framework is .NET Framework 4.0
and I made their Assembly Version 4.0.0.0 so they're the exact same.
is there a setting or something that I'm missing ?
how can i make it pop up ?
I'm using VS2010 Professional
Thank you for your help
Maybe this be usefull, I was having a similar issue, I have a Web project, add the reference to a Class Library by selecting the project, but if I made a change on the class library, I can´t see that change on the intellisense of the Web Project, after try many things, I see that in the recently added reference, the value of the option "Local Copy" was set "True", then I change it to false and everething works!
I had a similar issue but in my case it was a property on the class. If you go to the file properties and look for a Build Action. Somehow mine was set to Content it had to be set to Compile.
I am using Visual Studio 2013. I hope this helps someone else.
Is the namespace for your assembly different than the namespace for your currently open project? I've had times when the current project and an assembly share the same namespace path the intellisense can mess up.
In general, Visual Studio is pretty good about intellisense generation, especially for C#. But sometimes there are some interesting conditions regarding ambiguities, and especially mixing project types where it just doesn't quite work.
Placing your content in the same namespace makes me wonder if you've actually fixed the problem (it may just be autocompleting the namespace in the currently loaded project rather than the assembly), but if it allows you to continue working, then go with it!
Right click on project on which you add reference of your dll/project select menu project dependancies and select/MarkCheckBox for reference project/dll. then it will work fine.
If the class library project had its name changed after creation, then intellisense may fail finding it due to directory issues, I believe.
I created my class with the generic "ClassLibrary1" or whatever, and then later changed the default namespace, class name, and project name inside of VS2017. I closed VS2017 and changed the directory name to match my default namespace, and then re-associated the project file in VS2017, and then re-added the reference in my main project file.
All seems to be fixed now.
Iv'e downloaded a C# interval tree collection class class from here http://intervaltree.codeplex.com/SourceControl/list/changesets -> Right hand side -> Download.
However I can't open the whole project on my Microsoft Visual C# 2010 Express (that also runs C# XNA) because
Solution folders are not supported in this version of the application
Also I just want the class to use separately in my own seprate project.
I tried to copy the three important seeming files Interval.cs, IntervalNode.cs and IntervalTree.cs into my project but this generated the compile error
There are no importers which handle this file type
I've also tried to copy and paste the contents of the three files into my project, encapsulating them into there own namespace as well as there was a lot of code. I had to rearange some of the usings a little but have run into the problem that possibly it wants PowerCollections .dll and .pcb files as using Wintellect.PowerCollections; causes
The type or namespace name 'Wintellect' could not be found (are you missing a using directive or an assembly reference?)
I'm not sure how to continue or if I'm doing the right thing at all in how to get this class to work.
Add the library to your solution
Copy the IntervalTreeLib directory into your solution directory. Then, right-click your solution, and add existing project. Point it at IntervalTreeLib.csproj in IntervalTreeLib, and click Open. That should add the IntervalTreeLib project to your solution.
Add a reference to the library in your project
Then, in your project, add a reference to the IntervalTreeLib proejct:
- Right click the References folder, and Add Reference. Click the Projects tab, and select IntervalTreeLib.
Use the classes in your code
To use classes from the library in your source then, you need to either add:
using IntervalTreeLib;
void Foo() {
IntervalTree<int, int> tree = new ...
}
Or, refer to them by their full name:
IntervalTreeLib.IntervalTree<int, int> tree = new ...
Open the IntervalTreeLib.csproj file if you want to be able to open the project in it's entirety (or in your current solution add an existing project (you can right-click on the solution) and select the IntervalTreeLib.csproj). If you are trying to grab just the code file in your project, ensure you also grab the PowerCollections.dll file (I see it is in the same folder as the code files) or your code will not compile (as you have discovered). You'll need to add a reference to it and include the needed using statement at the top of the code files making use of this library (or use fully qualified name with the namespace).
using IntervalTreeLib;
or
var myObj = new IntervalTreeLib.[WhateverClass](...);
Also, make sure you read the license.txt file. You may need to include it if you are using the code. Give credit where it is due.
UPDATE:
If the test project is causing you problems, just open the library project. Ideally you could just open that and compile it, adding the output DLL files that are generated directly into your solution. This is ideal unless you are planning on changing the library source code itself.
Add the library to the references of the project you want to use it.
Since discussing that you are able to build Intervallib.dll, we will discuss about how you should the dll in your project.
Now in your proj, right click on the references part and add the dll intervallib.dll to your references. In your game.cs file, have the reference to the namespace as -- using IntervalTreeLib;
then you should actually copy the dll powercollections.dll to the bin directory of proj directory also.
you should copy this dll because there is an indirect link to the dll as it is used in IntervalTreeLib.dll
following these steps, I was able to execute this project.
I'm writing a really small application in C# and I need to include an .cs file with some class. How do I do that? I'm looking for some equivalent to PHP's "include file" or Python's "from file import something". Obviously "using" is not enough and the file has to be somehow linked. And I really don't want to start some new super-huge-totally-useless project using MonoDevelop or VisualStudio, I would like to stay with simple gmcs and command line.
You simply include both file names on the command line and ensure that the namespaces are the same or that the namespace of the included file is imported via a using statement or via fully qualified references. Then the command line for compilation looks like this:
gmcs mainFile.cs includeFile.cs
Note that the mono command line is designed to support the exact same syntax (with a few additions) as the Microsoft compiler so this is true for both of them.
Fundamentally this is what the project files and visual studio are doing (albeit going through an in memory msbuild equivalent)
There are two ways to "include" a file in .NET (and Mono)
Compile several files together.
gmcs mainFile.cs includeFile.cs
then files are then compiled together to a single assembly
Compile the includeFile to a separate assembly and reference that from the main assembly
gmcs -target:library includeFile.cs
gmcs -r:includeFile.dll mainFile.cs
this way you get two assemblies
I'm trying to create dynamically generated code based on user input (just like a mini-compiler). But my problem is that i need to use the PresentationFramework.dll assembly inside the dynamic code, and i don't know how to reference it.
I have already tried Assembly.Load() and Assembly.Loadfrom(). But all i get is an error saying:
"Assembly not found"
I am used to doing this with the IDE (right click references and then add), but now i need to find some way to do this through code.
I need the assembly to use System.Windows.Shell to create custom jumplists.
This isn't just happening for this specific assembly, but for several others too. But this is the most important one, so if someone could help me with this i would be thankful.
So the baseline is: I need to use the namespace System.Windows.Shell. I need to reference this namespace fully through code (no IDE). How can this be done? And is it even possible?
I'm using Visual Studio 2010 Ultimate (C#).
Thanks in advance!
It depends on the version of PresentationFramework you want when you need to add it as a reference. Basically, you will find it in :
\Program File\Reference Assemblies\Microsoft\Framework
(for 64-bit compilation, or 32-bit on a 32-bit OS)
or
\Program File (x86)\Reference Assemblies\Microsoft\Framework
(for 32-bit compilation or 32-bit on a 64-bit OS)
These are only the root folders. From here, you can go for example in "v3.0" or ".NETFramework\v4.0" for example.
So you just need to add a reference to a full "[path]\PresentationFramework.dll" instead of just "PresentationFramework.dll", for example:
"C:\Program File\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.0\PresentationFramework.dll".
Here is the answer straight from MSDN:
If your project references any
assemblies, you must specify the
assembly names as items in a
StringCollection as the
ReferencedAssemblies property of the
CompilerParameters you use when
invoking compilation.