Nailed you – Cannot copy assembly ‘xxx’ to file ‘path\xxx.dll’. Access is denied.

Hey folks,

I’m sure that all of you encountered this message at least once in your life as a programmer.
Well, I’ve managed to understand and fix one aspect(\scenario) of the beast:

In my project, I have a directory named “References” which holds all my compiled (in Release mode of course) Dlls which are being used as “black box” component (i.e file reference). Because of all these files are in the VSS and I put them as “Solution Items”(easier deployment), they downloaded to my computer as “Read-only” files. So at the first time the solution builds, no problem, The web project can copy those Dlls (they are not exist in his bin directory), afterwards it’s working fine as well (later builds) because there are no changes to this Dlls so the VS.NET simply don’t copy them again (like “he” don’t compile the ClassLibrary if no changes were made, he’s a smart fellow you know).

BUT, in my scenario, I’ve updated one of those “black box” Dll and I tried to rebuild my solution. You can understand from the title that I got this annoying message that it can’t copy the Dll. After I’ve checked a little, I found out the problematic file in my webproject\bin directory is checked as read-only, So I’ve unchecked it, rebuild the solution and it worked faultlessly.


If found 2 solutions for this problem:



  1. Call attrib -r [path-to-web-project]\bin\*.dll on pre-build (Build Event) of any ClassLibrary project; I would’ve put it in my WebProject project but unfortunately it doesn’t support Build Events (why MS, why ?)
  2. Go to your “References” directory and manualy set all the files to *NOT* Read-only.

 

“The operation could not be completed” on closing VS.NET

For some reason, every time I closed my (specific) solution from Visual Studio .NET (2003) the IDE throw an “The operation could not be completed” error. After I’ve tried to open another(different) solution in the same IDE instance, the solution was not bounded to the VSS !
I swear, this is a regular solution structure… nothing fancy;
After digging a little, and talking about it with Amir (aka “The Markowitz”), we’ve come to the conclusion that the solution (*.sln) file have problems with the VSS. It became obvious when I tried to add a file to the Solution Items and I simply couldn’t check-in the new file.


I’ve start googling about “troubleshoot VS.NET log” but no luck, I can’t seem to find a log file which will give me some more data about the “The operation could not be completed” error. I hate the “restart-your-computer” solutions style, but after I’ve spent 2 hours exploring the *.sln files, *.csproj files and tried to reproduce the problem on a different solution(tester), I was getting tired and frustrated.

As last resort, I’ve unbounded the all solution, deleted (permanently) the $/MyProject directory from the VSS and reattached the all solution to the VSS again using the recommended guideline.


Now everything is good, weird ah ?

 

Changing VSS bounded ASP.NET project directory name.

Damn, such a long title… I must take a minute to relax; Done –


I had to change the directory name of my Web project in order to ease my build process.
Well, I must admit, this isn’t an easy task when you don’t remember the steps or you’re too
tired to messing around with it (rule of thumb: gather the required powers, it won’t get easier to adjust it later you know).


So, from my experience here are the steps for changing the VSS bounded ASP.NET project
directory name without killing your VSS\Solution:



  1. Close the solution if it’s open (i.e – close the Visual Studio .NET).
  2. Create the new directory name you want to address the ASP.NET project into.
  3. Go to the IIS (Ctrl + Q -> iis, oh wait, assuming you’ve followed my advice and installed SlickRun) and change the virtual directory path to point to the new directory.
  4. Open the *.sln file with notepad (right-click->open with…) and find “SccLocalPath[number]” which points to your current(unwanted) directory name; overwrite the directory name with the new directory name.
  5. Delete the *.suo file – NOTICE: this is a hidden file so you must check the option to view all the hidden files (OS configuration). This file keeps the user configuration about the solution (like what is my StartUp project\file etc.)
  6. Open the *.sln via VS.NET and you’ll get a window which will ask you to choose the web project path (http://localhost/VirtualDirectoryName_1) – remove the “_1” suffix and click OK.
  7. Delete the old web project directory. TIP: if you’re trying to delete the old web project directory and you’ll get an error that there are files in use – try to delete VSWebCach directory (in your c:\Documents and Settings\[username]) and then try to delete the directory again.
  8. Drink something and relax, you deserve it !

 

Using MSBuild – Is it Smart ?

I’m struggling with myself about what’s the best way now to create an automated build mechanism for my dotNET project. I read a lot during the last weekend about using Nant and Nant Contrib and I’ve managed to pull something off quite easily. * I’ll upload the build file and my remarks about the process as soon as I’ll finish (Can’t wait ah ? ;-)).


I saw that Microsoft shipped their automated tool – MSBuild – with VS.NET 2005 (beta 2); But in order to make use of MSBuild in my v1.1 .NET framework, I’ll need to do some DIRTY hacks which I don’t seem to like in this case. You ask yourself why ?


1. This is a beta version, meaning the bugs will be all over me !


2. I personally think that using the beta version of any program in my Production environment is a big risk, too big in my opinion.


3. Let’s say that I found a bug and I need to get it fixed; MS will cry that this version isn’t supported in v1.1 framework (dah! that’s why I did my dirty hack) and in any case it’s only a beta and I need to wait for the final release – and they’ll be right ! (damn, I hate when it happens).


4. NAnt is an old(sorry… but I mean it as a compliment) open source freeware – there are less bugs and I can always dig in and make the required changes !


Therefore, I’m thinking of staying with NAnt just until the final release of MSBuild will be available.


What do you think ?

 

Add Virtual Directory programmatically, for easy “new-box” deployment.

I’m always trying to make my project deployment as easy as possible.

 

One of the “problems” I’ve encountered is keeping my solution structure, that is:

– MySolutionDirectory

      – MyWebProject

      – MyBusinessLayerClassLibrary

      – MyDataAccessLayerClassLibrary

      – MyEntitiesClassLibrary

      – etc.

 

This is hard to do, especially when the “Add Web Project” creates a virtual directory in

my wwwroot directory by default which breaks my desired structure.

 

When I want to initialize the Solution or to pull the entire solution from the

VSS (e.g – on a new programmer station) I need to take these steps beforehand


  1. Create the directory [solution-path]\[web-project\webservice name]
  2. Go to my IIS and add the required virtual directory which will redirect to step 1 path.

Otherwise, the VS.NET will create the web folders in my wwwroot automatically, which will again break my preferred structure.

In addition, in some of my solutions, I have more than 1 web project\webservice and repeating these steps can get very annoying.

 

So, after reading about IIS API, I’ve created an IIS helper utility for creating virtual directories by

demand in one-click EXE.

 

The configuration file is quite simple:


<VDSettings>
    <Directories>
        <Directory>
            <DirectoryPath>C:\Projects\MySolution\MyWebProject</DirectoryPath>
            <VirtualDirectoryName>MyWebProject</VirtualDirectoryName>

        </Directory>
        <Directory>
            <DirectoryPath>C:\Projects\MySolution\MyWebShareProject</DirectoryPath>
            <VirtualDirectoryName>MyWebShareProject</VirtualDirectoryName>
            <CreateUnder>MyWebShareProject</CreateUnder>
        </Directory>
    </Directories>
</VDSettings>


This sample demonstrates how to add “MyWebProject” Virtual Directory and create another

Virtual Directory, under “MyWebProject”, named “MyWebShareProject”.

 

* 2 Notes:


  1. You can create the virtual directory under a WebSite by using “WebSiteName” element under the “Directory” element.
  2. If the “DirectoryPathdoesn’t exist – the utility will create it before setting the Virtual Directory path.

 

Now, when a co-worker in my company is trying to deploy my solution on his station, all he needs to

do is to run VDCreator.exe and he can continue the deployment via VS.NET -> “Open From Source Control…” option.

 

That’s what I call “child’s play” deployment.

 

The files:

VDCreator bin1.zip (4.62 KB)  (EXE & config file only)

VDCreator Source.zip (9.64 KB) (Source files included)

 

DOs and DONTs – Adding a Solution to VSS

Add a new Solution and Projects to the VSS:

 

DONT –

Count on the VS.NET => “Add Solution to Source Control…” to add your solution

and projects to the VSS.

It will create such a mess in the VSS, a mess you’ll find difficult to clean up later on, that you’ll be

sorry for the moment you’ve chosen this option.

In addition, it will not give the desired (and recommended) structure:

 

MySolution

   – MyWebProject

   – MyClassLibrary1

   – MyClassLibrary2

   – …

 

 

DO –

Follow the steps in this great post. I truly believe this link is a MUST

for every developer who’s working with VS.NET and VSS on a daily basis.

 

I hope this will help you all…