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.
Related
Very new to C#/VS and this is vexing me - there are a lot of similar questions on SO, but none seem specific enough to help me!
I'd like to use a class from ProjectA in another class (eg ProjectB). I wish to "maintain" the class in the original project, ProjectA, and simply "use" it in Project B (if that makes sense?!)
From what I have read here and elsewhere, I first need to set up a reference to ProjectA within Project B - but this is the stage I am struggling with.
When I follow what I have read (eg on How to use a Class from one C# project with another C# project ) I get to the stage where I am in the "Add References" dialog, and have selected "Projects".
But VS wants me to reference specific "Component" file types (.dll, .tld, .olb, .ocx, .exe) but I can't seem to find a file that refers to "ProjectA". I browse to the folder where ProjectA sits, but no files of the correct type exist. There are files such as:
ProjectA.csproj, ProjectA.sln, ProjectA.suo
but none of these can be selected in the dialog.
Can anyone provide what I suspect will be a very simple answer? Thanks!
In the dialog box for Add Reference you have the option to reference a project within the solution. This will add all its namespace classes and make them available for your use in the other project. You need to make the two projects part of the same solution to be able to do that.
Can anybody provide some code block to add an existing C# file to a project.
I have 2 projects in my solution. One project generates C# class files which will be use by second project. I have to incluse these generated files in the second project and build the project. It should be done through programatically. I know that to include these files I have to edit the C#project file (which is an XML) and make an entry that file. But I thought of
using existing code if anybody has it.
Thanks
You can ahve a look at the MsBuild.Engine namespace. It allows you to manipulate a csproj in a consistent way so you can oper the target project and add the reference programmatically.
I have a file named common.cs which contains commonly used functions like this
public int GetColumnIndexByNameTemplateField(GridViewRow row, string SearchColumnName)
{
int columnIndex = 0;
foreach (DataControlFieldCell cell in row.Cells)
{
if (cell.ContainingField is TemplateField)
{
if (((TemplateField)cell.ContainingField).HeaderText.Equals(SearchColumnName))
{
break;
}
}
columnIndex++;
}
return columnIndex;
}
Now I want to make that common.cs file change into common.dll, I created another class library project in which I copied all the code from common.cs file, added necessary references and built it to generate dll file, now I pasted that dll file from project debug directory into the bin directory of my asp.net project which is already using common.cs but whenever I try to import that dll using.
[DllImport("common.dll")]
public static extern String NewString(String x);
where NewString is another function, I get this error.
Unable to find an entry point named 'NewString' in DLL 'common.dll'.
I have checked already posted questions on stackoverflow as well as other guides on internet that tell how to make and use a dll but I don't know why I am getting this error also most of the guides show dll written in C++ where as my dll is written in C#, they also tell to use __declspec(dllexport) which tells that function is ready to be exported or something like that but I can't use this in C# dll I suppose.
I think its a basic question but this is my first time creating dll in C# so please help me out.
Thanks.
Ahmed if you want to turn any project into a library (.dll), double click the 'properties' folder in the solution explorer. Click the drop-down for project type and select 'Class Library' then click build, rebuild solution to recompile into a .dll.
Note that you can create a new ASP.NET project in the same solution by right clicking the solution and clicking 'add project'. Or you can open a new instance of Visual Studio. Once you open the ASP.NET project right click on references and click add reference. Click the browse tab, navigate to the folder containing the .dll and add it. Don't forget that any classes defined in the .dll must be marked as public or they will not be visible in other assemblies. Also don't forget the using statements for the namespaces that your classes are defined in.
When you click the 'Run Button' (the green arrow) it will always run the project that is in bold in the solution explorer. If a .dll is bolded then you will get an error that you cannot run a class library but you must instead change it to console application. If it is a console application then it must have a static void Main() function defined so it knows where to start. You can set any project as the startup project by right clicking it in solution explorer and click 'set as startup project'.
If you wish to run a program in your solution, but do not want to set it as the start up program than you can right click, go to debug and run. Organizing like-projects in a single solution can make maintaining them much easier.
Hope this helps.
You don't need to use DllImport. Since common.dll is a managed assembly, you simply need to add it as a reference in the ASP.NET project that's trying to use NewString.
if your assembly is written in c#, there's no need for a dllimport. rather go for add references like so - msdn entry (go for browse)
Paste the dll in the Bin folder of the site and you can use this by "using " at the top of the class of file then you will get all the methods of dll.
I've made a C# class defined in a .cs file, which I'm using in an existing project.
Let's call it the Magic class, defined in Magic.cs.
Now I'm working on a new project, and I'd like to instantiate an instance of that class in my new project.
How can I reference that class in my new project without actually copying the file into the new project's directory?
In Delphi, the answer would be "add the location of the class definition to your search path". This is an embarassingly stupid question, but I can't find a good answer anywhere.
Here is what I've tried:
1 - Project->Properties->Reference Paths->Add the location of my class (references to the class are still unresolved)
2 - Right click on project -> "Add existing item" -> choose the class (creates a new separate copy in my project folder)
3 - Right click on project -> "Add reference" -> see that it is expecting a compiled target like a DLL.
See also
How do you share code between projects/solutions in Visual Studio?
Visual Studio&Source Control: How to have shared code?
You are in a whole new world. There is no equivalent.
If you want to share the class with out copying it in you create a class library and build your class into that library. Then you reference that built library from your project.
You can add a class library to your solution and the reference the project while you are developing. Class libraries act very similarly to the way BPLs do if you ever used those.
Once you have a class library you can then share the library between your solutions. This can be done in 2 ways - by building the library and sharing the binary - or by including the class libraries project in your solution. At first you probably want to go with the latter method till you get the hang of it, but once things get quite large and your shared code settles down it is better to reference the pre-built binary.
There is learning curve here - but at the end of the day you will be better off.
Good luck.
Joseph, Visual Studio does not provide this functionality, so must reference each class manually. Anyway to avoid to create a copy of your class every time which is included in a new project you must use the a option Add existing item selecting add as link.
Sorry but you cant do this, its good to know that Delphi provide such facility but may be Visual Studio doesn't do this because at the end of the day this may lead to a mess of linked files. Visual studio likes to organize related files in the same project or solution.
If you want to have your earlier class available then as mentioned above you have only two options.
1) Simply copy the existing .cs file in your project directory (By Right click on project -> "Add existing item" -> choose the class )
2) Add the Project in your solution (Right click on Solution -> Add -> Add Existing Project... -> Select the project file from File Browser) and then Add the class refrence (Right click on project -> "Add reference" -> In Projects Tab Select your Project). It will automatically make a reference to the .dll.
3) And last option is to compile your class in a .dll and then add the refrence to it in your Project.
Good Luck
You want to reference either a compiled .Net assembly (dll in this case) or another project that is part of the your solution. If you have the source, you add the library project to your solution. Then add the library project as a reference to the project that uses it. When it compiles, it'll copy the dll over to your build directory. Using this method is nice because you'll be able to step through the code in the library when using the debugger.
I need to use some classes inside the app_code folder of a website project in visual studio 2008. I need to access this code from a class library project in the same solution. I cannot add a reference to the website, and I'm not sure of the easiest way to use the classes that already exist here. Do I need to move it to a class library?
What other options do I have?
Yes, create a class library and move any types you need into that library. This library can be referenced in as many places as you would like.
The best way to do this is to put those classes in their own library.
However, if you really don't want to do that, you could add a link to the files in the library project. To do that, right-click the Class Library project or a folder within it, Add, Existing Item, navigate to the code files, click the down arrow near the Add button, Add As Link. This will add the same file to both projects. You can even use the #if preprocessor directive to limit portions of the file to specific projects.
However, it is vastly preferable to put the code in a library and reference it in the web project.