I am trying to make a setup for a C# application in .NET 3.5.
The application runs an other application which was compiled for .NET 4.5 and uses some DLLs. I want to add this application to the application folder in the setup.
I can't add the DLL's to the setup as a file, there is an error popping up. ("The operation could not be completed")
If I add the DDLs to the project folder and then use them as content, I get an "Unrecoverable build error" when I create the project.
How am I supposed to add these DLLs? I do not care how, but I need them in the project folder.
Thanks.
PS: I am using the standard setup for VisualStudio 2008.
With Visual Studio, when you add your external DLL as a reference in a project, it will automatically be added to the setup.
First of all, isn't there any way to find an earlier version of the assembly targeting .NET 3.5? Or if you have access to the source, remove/change the .NET 4.5 specific code and recompile?
Otherwise, you can try to wrap you dll around a COM interface, as described here. This article targets .NET 4 dll used with .NET 2.0 but the mechanism should still work in your configuration. I have used it successfully myself for 2.0/4.0 interop.
Here is another trick you can try.
Consider that in either case you will need .NET 4.5 installed on target computer, in order to work. So you can move your project from 3.5 to 4.5. I understand that you use VS2008 which doesn't have .NET 4.5, but you can use express (free) edition of Visual Studio from here -> Microsoft Download Page
I solved this problem using a simple trick:
The errors came only from the DLLs written in .NET 4.5. The executable (.exe) did not cause any errors. What I did is to package all the DLL's into the exe using the ILMerge tool.
Then I added the .exe file to the library and everything worked like a charm.
ILMerge download site (Microsoft)
Related
I have solution with mixed projects: C#, native C++ and CLR/C++ (this also requires some external DLLs). When I used default settings of VS 2012 and targeted for .Net 4.5 it worked fine. But then I had to downgrade it to .Net 4.0.
I succeed by building solution only for 32-bit and forcing C# main project to be built for 32-bit also (usually C# is used for "Any CPU").
With such settings in runs fine on 2 computers out of 3 I have for tests -- meaning on it fails. It claims it cannot load CLR/C++ project or one of it dependencies.
So my problem is how to run it or at least to know what failed exactly? From the list of installed programs I can see that on working computer I have either .Net 4.5 Multi-Target or I don't have .Net 4.5 at all (only 4.0). On computer which fails I have .Net 4.5 (period). So maybe my program tries to load some assemblies from .Net 4.5 instead of 4.0? But that is just guessing.
Question -- how to diagnose such twisted solution and how to fix it?
Install .Net framework 4.0 multi-targeting pack
Check references (including NuGet, if any)
When I encounter a similar problem I usualy check the following:
Do you have Visual Studio installed on any of those three machines? I guess it's installed on the two where your application is running. If so, I'll extend the list later.
Check the target of the C++/CLI project - it should be Win32 if you build for 32-bit.
Run the application without Visual Studio, wait until it fails and go to the Event Viewer to look for some usefull information there.
Get Process Monitor, run the application without Visual Studio, wait until it fails, stop monitoring and filter the list by the application name and failed operations and look there for some usefull information.
i am working on a dotnet C# web application which was initially created with VS 2003. My goal is to upgrade this application to Dotnet 4.0 without changing any functionaltiy. The solution has 9 projects (1 web + 8 Library projects). The Web project refers the 8 libraries in DLLs. To start off, I created a New project in VS2010 and added the all the Project files from the existing source code. Every time i add a project file to my solution, i was prompted with the Converison wizard and i completed the conversion wizard succesfully and now the solution works fine. After the conversion, i noticed that Except the "Web" project, other projects are converted to Dotnet 2.0 but not 4.0. My application runs without error if i run it locally using VS2010. My questions are
Why the Class libaray project did not upgrade to 4.0? Currently the
Web project is shows up as Dotnet 4.0 and Libaray projects shows up
as Dotnet 2.0.
Can i deploy the application to IIS 7.0 with the
Dotnet runtime of 4.0? Will the Dlls created in version 2.0 work if my application
uses Dotnet 4.0 runtime version?
Please help...
If your'e migrating now, why not move directly to Visual Studio 2012, instead of 2010?
Anyway, what you can do is open the project properties in each of your projects, and change the target framework to the .NET framework 4.0.
Then if you get any compilation error you can probably easily solve it individually. This should be relatively easy if your projects are not too big.
As for your specific questions:
The automatic conversion would only change the format of the solution/projects to be compatible with the new version Visual Studio. It shouldn't change the target framework but you can change that yourself.
Yes, assemblies targeting .NET 2.0 can be loaded and used from assemblies targeting .NET 4.0.
1) Upgrading the solution/projects file only upgrades it's format so you can open it in VS 2010. It will usually leave the targeted .NET setting at the previous value. These are two seperate things. The wonderful thing about VS 2010 is it let's you target whatever version of .NET you desire, so no longer do you need multiple version of VS installed to support differnt .NET versions. It didn't change the targetted .NET version because it leaves it up to you. You can change it under the project settings and recompile your library projects to regenerate the DLLs
2) You will need an application pool for .NET 4. .NET is backwards compatible in that a .NET 2.0 app can run on a machine with .net 4 installed. However, the application pool for 2.0 applications must be separate from 4.0 apps. So it's just a matter of putting the app under the right app pool.
I am using .NET4.0, but for compatability reasons, I'd like to compile to a .NET2.0 dll from c#. There should be no .NET4.0 specific functionality used in the script, so it should run fine in a .NET2.0 environment. Is there some commandline syntax on the csc that I can specify a version number with?
You mentioned csc.exe, so I'm assuming that you won't be building with Visual Studio, but rather, by command line. Also, I'm assuming that msbuild is not available on the build machine.
I believe that csc.exe is specific to each version. For example, in the folder C:\WINDOWS\Microsoft.NET\Framework\v4.0.30319, you will find csc.exe, and in the folder C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727, you will find another version of csc.exe.
To build a .NET 2.0 dll, you should reference the csc.exe from the v2.0 folder (C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727).
Cheers!
In Visual Studio you could set the target framework version to .NET 2.0 in the properties of the project:
if you are compiling manually from the command line, can't you just run the v2 framework csc?
eg (paths from my machine)
C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe
or for v4
C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
If you build with MSBuild (which of course includes from within VS) then you can specify the target framework version from the project properties dialog. However, if you build manually it seems there is no surefire way to express that restriction.
Set the target framework to 2.0 in the project's properties. In case you are using features like LINQ that are not present on the 2.0 framework, this approach won't work. If you need full compatibility with 2.0 framework, you should write your code for the 2.0 and then compile targeting the 4.0 later if you need.
I'm a beginner .NET programmer (C# and IronPython).
I've come across WatiN .NET library which will show handy for what I'm trying to do. The website claims that it is compatible with any .NET language, so I assume it's compatible with IronPython as well.
How do I go about installing it? Their website only has some instructions, using NUget in Visual Studio. I neither use Visual Studio nor am I interested in it. How and where would I put the downloaded files in order to make it work with IronPython?
A library is a .dll file ( or many ), if you used nuget there should be a folder called packages in your solution folder and in there a folder with your dll.
What you want is to add a reference to that dll. Have a look at this
I've installed a complete SharePoint Server (MOSS) 2007 on my dev box + the latest Visual Studio (SP1) + the latest full Windows SDK. According to the Windows Workflow Foundation page http://msdn.microsoft.com/en-us/netframework/dd980558.aspx, that is all I should need to do to be able program against the .NET Workflow APIs.
And yet, all of the projects I build from the standard Workflow templates refer to the assembly System.Workflow and VS complains that that assembly isn't available. I've searched around on my hard drive, and I can't find a file for that assembly anywhere obvious on my disk.
I do find some files that look like they might be that assembly, but they're buried down in wacky places below particular applications like they are runtime support for that app. They don't seem to be what I'm supposed to point VS at.
Can anyone tell me how to fix this problem? Do I need to install something else that I have yet to come across? Are these assemblies already on my system and I just need to know how to point VS at them? I'm stumped.
BTW: I was going to try uninstalling and reinstalling VS, but the installer fails with some very cryptic error message when I try to uninstall.
TIA for any help, and Happy Holidays to all!!!
I did a Repair using the .NET 3.5 SP1 SDK distributable, and I believe that this solved the problem. I thought at first that it didn't (as I say in prior comments) because I was looking for the files to show up in the v3.5 assembly directory. The missing files actually go in the v3.0 assembly directory. I later brought up one of the sample projects in VC and noticed that the symbols were now resolving, and sure enough, the missing .dll files were now present.
So I guess that the .NET SDK installer that ships with VS somehow didn't install these .dll files. It took doing a Repair on the SDK to fix the problem.
I'm a happy camper now!
In addition to change the target framework to 4.0, you also need to:
Add a reference to System.Workflow.Runtime
Add a reference to System.Workflow.ComponentModel
There's no assembly named System.Workflow in .NET 3.x: the WF assemblies (in 3.x) are:
System.Workflow.Runtime
System.Workflow.ComponentModel
System.Workflow.Activities
System.WorkflowServices (3.5)
You should be able to find all these assemblies in the GAC, and reference them via the Add Reference dialog, .NET tab.
It's possible System.Workflow is a (badly named) SharePoint-specific DLL, in which case, sorry, the above won't help... try the SharePoint install directory or SharePoint SDK install directory. Are the project templates you're using SharePoint templates, or the ones from File > New Project > Visual C# > Workflow?
I have a same problem, and solved it. The reason is your project's target .net framework not include this assembly (it's maybe .net 3.5 client profile or 4.0 client profile). The solution is very simple: set the target framework of your project to .NET Framework 3.5 or 4.0.
It work for me.
Please find it in C:/Windows/Assembly/GAC_MSIL
All the DLLs are Present there..
Also If U donot Find it then do the Following
Right Click Project->Application->Target Framework-> .Net Framework 4.0
It should show Up then.