Archive for the ‘C# 2.0’ Category
Posted by jpluimers on 2016/02/16
This was very useful to get a WebClient with a WebProxy configured to use a proxy server that is based on NTLM authentication.
The note in the MSDN NTLM and Kerberos Authentication . documentation however was totally wrong.
String MyURI = "http://www.contoso.com/";
Note NTLM authentication does not work through a proxy server.
This code works perfectly fine as the CredentialsCache.DefaultCredentials contains your NTLM or Kerberos credentials .
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Posted by jpluimers on 2016/01/27
You’d think this is a simple question.
Be amazed by the many ways leading into to creating a temporary file with a specific extension.
This list doesn’t even cover all of them:
Create a file name based on GetTempPath, a Guid and an extension.
Use the TempFileCollection from the Compiler in System.CodeDom.
Get a random file name, then change the extension. Loop until it is unique.
Use a timestamp to generate unique file names.
All via: c# – How can I create a temp file with a specific extension with .net? – Stack Overflow .
Which one would you choose?
–jeroen
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Posted by jpluimers on 2016/01/18
Still a great book. I love the chapter Threading in C# – Free E-book which you also can get as a PDF download .
It’s a chapter from C# 56/5/… in a Nutshell by Joseph Albahari. Great book!
Don’t forget to read these as well: Jon Skeet: Multi-threading in .NET: Introduction and suggestions (printable) Multi-threading in .NET: Introduction and suggestions (browseable)
--jeroen
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Posted by jpluimers on 2015/11/24
A while ago, I came across a class having (among other members) two methods named like this:
Within one of the other members of the class, I had to (temporarily) Stop processing, then Start it again.
But I couldn’t, as neither Start, nor Stop would make a record of the state it left the instance in.
Always ensure you know the state of an instance.
So I added the state, and tests to ensure a Stop/Start change was indeed not breaking things.
–jeroen
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Posted by jpluimers on 2015/11/04
From a chat with a co-worker a while ago:
I’m not against properties. Just something against properties properties that are objects with writeable fields.
So even if you expose such a property as read-only, it can still get its writeable fields overwritten.
That is a pain when those are part of the state of the underlying object.
In other words: encapsulate your state changes.
Here we solved it by making
the type of the property immutable
the property writeable
react on state changes during the write
Proper encapsulation.
In this case it was a project mixing C# and Delphi, but you can easily apply the above to any language featuring classes and properties.
Another solution would have been to extend the type of the property so it can expose an event that fires during change. Much more convoluted.
–jeroen
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Posted by jpluimers on 2015/11/03
Lazy<T> is not constrained to static contexts.
Instance field initialisers cannot use instance references (but can use static references) as they run outside of the constructor.Though there are arguments for instance field initialisers too ., I think this is a good reason to initialise fields inside the constructor: there you do have access to instance references (but should not call virtual instance methods or properties ) which leads to another reason: consistency as field initialisers run in the opposite hierarchy order as constructors (incidentally causing this virtual method restriction).
Boy, that was a long sentence (:
–jeroen
via:
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Posted by jpluimers on 2015/10/06
Get the path to the most recent msbuild.exe from the registry :
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@echo off
:: http://stackoverflow.com/questions/328017/path-to-msbuild
:: http://www.csharp411.com/where-to-find-msbuild-exe/
:: http://timrayburn.net/blog/visual-studio-2013-and-msbuild/
:: http://blogs.msdn.com/b/visualstudio/archive/2013/07/24/msbuild-is-now-part-of-visual-studio.aspx
setlocal
:vswhereModernTry
:: https://github.com/Microsoft/vswhere/wiki/Find-MSBuild
:: Normal output example of `vswhere -legacy -latest -property installationPath` has no trailing back-slash:
:: `C:\Program Files (x86)\Microsoft Visual Studio 14.0\`
for /f "usebackq tokens=*" %%i in (`vswhere -latest -products * -requires Microsoft.Component.MSBuild -property installationPath`) do (
set InstallDir=%%i
)
:: without ENABLEEXTENSIONS, %InstallDir% is only available outside the above loop.
for %%v in (15.0, 14.0) do (
if exist "%InstallDir%\MSBuild\%%v\Bin\MSBuild.exe" (
set msBuildExe="%InstallDir%\MSBuild\%%v\Bin\MSBuild.exe"
goto :finish
)
)
:manualTry
:: order of the versions is important: get the most recent one
for %%v in (14.0, 12.0, 4.0, 3.5, 2.0) do (
for /f "usebackq tokens=2* delims= " %%c in (`reg query "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MSBuild\ToolsVersions\%%v" /v MSBuildToolsPath`) do (
set msBuildExe="%%dMSBuild.exe"
goto :finish
)
)
:vswhereLegacyTry
:: -legacy is not compatible with -products or -requires
:: note there is no Visual Studio 13.0 (just like there is no Office 13.0) likely because USA superstition.
:: https://en.wikipedia.org/wiki/Microsoft_Visual_Studio#History
:: msbuild was introduced in Visual Studio 8.0: https://en.wikipedia.org/wiki/MSBuild#History
:: Legacy output example of `vswhere -legacy -latest -property installationPath` has trailing back-slash:
:: `C:\Program Files (x86)\Microsoft Visual Studio 14.0\`
for /f "usebackq tokens=*" %%i in (`vswhere -legacy -latest -property installationPath`) do (
set InstallDir=%%i
)
:: without ENABLEEXTENSIONS, %InstallDir% is only available outside the above loop.
for %%v in (14.0, 12.0, 11.0, 10.0, 9.0, 8.0) do (
if exist "%InstallDir%MSBuild\%%v\Bin\MSBuild.exe" (
set msBuildExe="%InstallDir%MSBuild\%%v\Bin\MSBuild.exe"
goto :finish
)
)
:: nothing found
:finish
endlocal & if not [%msBuildExe%]==[] if exist %msBuildExe% ( echo %msBuildExe% )
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for /f "usebackq tokens=*" %%c in (`"%~dp0get-msbuildExe-path.bat"`) do (
call %%c %*
)
With help from:
Note
This needs adoption for Visual Studio 2017 (15.0) and up; see the comments at the above gist :
–jeroen
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Posted by jpluimers on 2015/09/28
I’ve seen this question coming up a few times, and bumped into this at a client recently: the UAC dialog coming up when debugging a 32-bit executable.
This is caused (more details below) by Installer Detection Technology introduced in Windows Vista (with UAC) and tightened in more modern Windows versions.
The solution is to either:
not include Installer, Patch, Update, Upgrade, Setup, … in your EXE name
provide a correct manifest to your EXE (getting this right can be hard)
don’t use x86 as platform target
For software you don’t have source code for, you can alter the manifest with a requestedExecutionLevel element : Fixing the way Vista Auto-detects Installers – Ben’s Writing .
A few links on Installer Detection Technology in Windows:
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Posted by jpluimers on 2015/09/23
Visual Studio 2013 syntax highlighting: watch the closing curly brace.
Console.WriteLine(“URL IS : http://localhost/ :{0}”, portnumber);
–jeroen
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Posted by jpluimers on 2015/08/18
Had to investigate some Assembly Loading issues, so I wrote two batch files to enable and disable the .NET Fusion Log:
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reg add "HKLM\Software\Microsoft\Fusion" /v EnableLog /t REG_DWORD /d 0 /f
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reg add " HKLM\Software\Microsoft\Fusion" 1 /f
They modify the HKLM\Software\Microsoft\Fusion key REG_DWORD value EnableLog.
A few notes:
It is very important to turn of the Fusion log settings as soon as you are finished investigating. Fusion logs potentially take a lot of resources.
When you have a .NET host like ISS , you have to restart that host (for instance by running iisreset )
There is also Fuslogvw.exe Assembly Binding Log Viewer , but I like logging over viewing as logs are persistent.
There are more values under HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Fusion you can configure; see the answer by Gary Kindel on StackOverflow :
DWORD ForceLog set value to 1DWORD LogFailures set value to 1DWORD LogResourceBinds set value to 1String LogPath set value to folder for logs e.g. C:\FusionLog\ (ensure the final backslash is there and the folder exists).
–jeroen
via:
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The Wiert Corner - irregular stream of stuff 
lextm commented on Mar 9, 2017 •
vswhereis now recommended to locate MSBuild 15,https://github.com/Microsoft/vswhere
n9 commented on May 17, 2017
vswhere -products *to get standalone installation of BuildTools. (See Microsoft/vswhere#61.)