Could Not Resolve Mscorlib For Target Framework '.NETFramework Version-v4.0'
Nov 8, 2010
I upgraded a solution with multiple projects from VS2008 to VS2010.One of the projects, a class library project, won't compile, although there are no errors in the error list.On the References tab of the project properties, the above error is displayed: "Could not resolve mscorlib for target framework '.NETFramework, Version-v4.0'.This can happen if the target framework is not installed or if the framework moniker is incorrectly formatted." .NET framework 4 v4.0.30319 is installed, and so is v3.5.All other projects build and work fine.Not all workstations experience this - some workstations can open the same solution without this problem occurring.Computers which have this problem also have VS2008 installed, and the same project compiles without issue in VS2008 on the same machine which has the problem in VS2010.
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Aug 15, 2010
I am attempting to write a program in Visual Basic Express 2010 that uses .NET Framework version 3.5 instead of 4. (The computers that I plan to use this program on only have .NET 3.5 SP1, and are painfully slow, so I don't want to upgrade them to .NET 4.)I have seen in the documentation that the Express edition does not have the option to change the target framework in the "New Project" dialog. However, when I go to the Project Properties window, there is not a drop-down list for the target framework, either.Can I change the target framework version in Visual Basic Express 2010?
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Apr 7, 2009
How come software created in an older framework version won't run on a newer framework version? Actually whenever i try to run some old specific software having .net 3.5 framework on my PC they show they needs .net framwork 1.1 . What a bad thing?My newer version of Photoshop ans Ms office open all lower version files.
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Jun 22, 2010
I have a simple application, that was working just fine then all of the sudden I open the file and the design pages will not show up and I get the following warnings:
Warning 1 Could not load type 'System.Object' from assembly 'mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' because the parent does not exist. G:ProgramsCONNS v 1.0ConnectionsFrontPage.Designer.vb 149 0
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Jun 10, 2010
Is there any way to make my programs use a lower version of net.framework other than the newest version 4 that comes with VS2010?I use my programs within a closed network and there isn't an easy way for me to install any software since I'm not the administrator.
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Jul 12, 2011
My VB.NET 2010 app currently targets .NET 3. I have to update it to target .NET 4 to get around some Locale / CultureInfo issues. What's the difference between .NET 4 Client Profile and the other .NET 4s I have on my machine: Extended and Multi-Targeting Pack? Which flavour of .NET 4 should I target? I want to target the flavour that the average user running Microsoft Office (Excel/Word/Outlook) out in the wild is most likely to already have. Why (on my machine) is there only a regasm.exe for v2.0.50727 and v4.0.30319? Why not a separate version for the other versions installed on my machine? (3, 3.5)
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Nov 5, 2009
Is there any way (via code or otherwise) that you can tell what version of the .NET framework a particular EXE or DLL is targetting? I know the long way round would be to try and run it on a machine with just .NET 1.1 on, then if that doesnt work try it on a machine with 2.0 on, etc etc
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Dec 6, 2011
Problem: A 2 year old solution made in VS2010 with vb .net 2.0. We are going to convert it on 4.0. So, the question is how? On a C# solution is quite simple since there is the compile tab where you can change the target framework, but here on vb net i can't find it.
Here it is what i see on project properties[URL]..
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Jan 26, 2011
I developed an app using the .net framework 3.5 sp1. I have now been told that the published version must not require sp1 but just the 3.5 framework.
So I uninstalled sp1 from my pc but not cannot publish the app. The app code will run without error but when I build it for publishing I get the error The "RequiresFramework35SP1Assembly" task was not found. Check the following: 1.) The name of the task in the project file is the same as the name of the task class. 2.) The task class is "public" and implements the Microsoft.Build.Framework.ITask interface. 3.) The task is correctly declared with <UsingTask> in the project file, or in the *.tasks files located in the "C:WINDOWSMicrosoft.NETFrameworkv3.5" directory.
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Dec 14, 2010
I started a project in VB 2008 and the target Framework was obviously not 4, like it forces in VB 2010. The issue is the computers this application is being deployed to have 3.5 as the latest .NET Framework.
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May 21, 2010
I've been working on a new application and realised that I want the target framework to be 3.5 (4.0 isn't rolled out yet). So, I changed it and now when I try and debug I get the following error:
"An error occurred creating the form. See Exception.InnerException for details. The error is: Unable to cast object of type 'System.Windows.Forms.SplitContainer' to type 'System.ComponentModel.ISupportInitialize'."
I really don't want to have to delete and recreate the splitContainer....
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Nov 11, 2009
I have built a Dll and a Windows Service in vs2010. Both are targeting the .net 3.5 framework, but when I install it on the server it installs fine, but for some reason it targets the 2.0 framework and any time the methods fire that are using linq it crashes out with a clr20r3 error system.nullreferenceexception. Not really sure why it's not targeting .net 3.5.
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Oct 31, 2010
I'm creating a WindowsForm application and I need a code to check target's machine installed version of DirectX.If the reg key doesn't match with provided one >>> load the form and launch the DX installer "redistdirectx_Jun2010_redistDXSETUP.exe"If the reg key matches with the provided one >>> launch other application "Setup.exe"
Provided version:
[HKEY_LOCAL_MACHINESOFTWAREMicrosoftDirectX]
"Version"="4.09.00.0904"
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Aug 18, 2011
I created a VB Console app and it defaulted to .NET 4 but I need it to be .NET 3.5. I've been looking but all the references I find say to change it on the 'Compile' tab in properties but I don't have a compile tab or anything else that lets me change the target framework.
Note: I'm using VS2010 Ultimate
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Aug 30, 2011
I have an desktop application that references several dlls. All are targeted for .Net 3.5, x86. The applicaiton has been deployed for several years and was upgraded from visual studion 2008 to 2010 last year. I have made several changes to the app since then (as recently as last Thursday) with out any issues. Now, everything builds, but when I run the application, I get a type initialiazer error when one of the projects is loaded by the main application.
The error messsage is {"Could not load file or assembly 'System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified.":"System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"}.
There were no changes to this project since the last successfuly deployment last week, but today I am getting this error.
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Jul 21, 2010
I know how to change the frame work version in one vb project.But I have a solution that has very many projects and doing that is really taking a lot of time.
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Apr 22, 2010
I am writing my first application in VB 2008 Express with .NET Framework versions 2.0, 3.0 and 3.5 installed. When completed, I assume the application will need to check whether it is running under .NET Framework version 3.5 or later. I have not found any properties that I could get which would give me this information about the environment in which the application is running. Is this something that the non-user code in which my application is wrapped by the IDE checks, or is it something that I have to check myself within the application ? If the latter, how would I do that ?
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Nov 13, 2009
I am making a little Diagnostic Test app to check that certain folders and files exist.I would also like to list some system specs, i have almost all the ones i need except the currently installed framework version.
I have search the My.Computer libraries and in the help but cannot get the framework version to display in a listbox.How to get the framework version into a string?
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Jan 21, 2010
When I distribute my program to another, I don't know which .net framework he has loaded. My program was developed and compiled with VS 2005 and I am using .net 2.0. Will my program work on his machine if all he has loaded is .net 3.5? (or something else)
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May 31, 2009
i developed a program using vs 2008 and works well. now i want to distribute to my friends for that which version of .net framework i have to give along with this?
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Jun 26, 2009
Is there a way to check if the necessary version of .NET framework has installed and if it has not installed to display a custom message explaining the user what is the problem and how to download the required version of .NET framework in order to make the application work?
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Nov 16, 2010
All my application does is downloading files and doing string manipulation. I don't think I need .NET 4.0 for that. I changed the framework to 2.0, so more people can use my application without having to install a newer version.[code]...
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Apr 2, 2010
If I create an application in VB.NET using Visual Studio 2008, what version of the .NET Framework do other people need to have in order to run my program? Is it the same every time, or does it depend on what the application actually does?
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Oct 9, 2010
Does anyone know of a way to programmatically determine which version of the .NET framework is installed on a computer? I was thinking of trying to scan the registry, but my main worry is that a user would need admin rights if trying to use the method
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Jan 13, 2010
I need to detect if any version of the .NET framework is installed as we are deploying a .NET 2.0 app via logon script (ie XCOPY deployment) to all PCs in our network. The .NET app will be set to start when a user logs in, so we need to determine if .NET 2.0 (or higher) is installed before we deploy the app otherwise the user will get an error each time they log in. Is there any sure fire way to detect .NET via vbscript or batch file? All of the results I have found on google don't seem to be that reliable.
I have recently written a program that detects installed programs in the same way that Add/Remove Programs does but the problem with this is that even Add/Remove Programs does not seem to show the .NET framework on all PCs that have got it installed (like my home PC for example, definitely has .NET 3.5 installed but its not in the Add/Remove Programs list).
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Dec 6, 2011
I'm writing a code that will check if .net framework 3.5 SP1 is installed before installing the program.The command I found googling around was System.Runtime.InteropServices.Runtime Environment.GetSystemVersion..I wasn't able to verify the correct .net framework version using this command.I'm currently running 3.5 SP1 and this command is showing v2.0.Is there another way to get the correct .net framework version?
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Jul 21, 2010
Is it possible to reduce the version of .net framework of my application. For example: Host using my application have .NET 2.0 I make changes in my app so that it always run as .NET 2.0 not the latest .NET 3.5
Or another idea i have is to deploy .NET 3.5 in installation package i.e. if he runs my app and it detects .NET version and if its not .NET 3.5 then .NET 3.5 installer should open else my app should run.
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Oct 27, 2010
Mainly I ask this because I don't want to distribute both versions, and if I need to instal a 64bit .NET on an x64 PC and a 32bit .NET on a 32 bit PC then I would need to make this check in my loader application to download the correct version for the correct PC.
[Code]...
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Feb 3, 2010
I wrote a programme and sent it to my client, (it was not a deployment or install file - just the .exe). He responded that it would not run and the PC reported "this program requires Net Framework 2.0". He cannot update the PC in question with Net Framework 2.0. So my question is can i somehow change my program to use an earlier version of Net Framework?
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Dec 21, 2009
i have a component developed in dot net if i want to find out the dot net framework required for that component to run, how can i find out?
i know we can detect the framework installed on a system, but here i have a dot net component, and want to find out which framework is needed for it to run?
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