Updated on 2015/10/4: Update the screenshots to Windows 10, however, applies to Windows 8/8.1/10
Windows 10 includes the 2.0, 3.5 and 4.5 versions of the .NET Framework. However, only 4.5 is available for immediate use after a clean install. The versions 2.0 and 3.5 of the framework are not installed by default. If you open the Add/Remove Windows Features dialog you’ll see the “Microsoft .NET Framework 3.5 (includes .NET 2.0 and 3.0)” listed, but disabled.
When should you use var keyword in C#?
Check out Eric Lippert’s blog article http://blogs.msdn.com/b/ericlippert/archive/2011/04/20/uses-and-misuses-of-implicit-typing.aspx
See also http://stackoverflow.com/questions/41479/use-of-var-keyword-in-c-sharp
You may encounter problems when entering the database connection details in the first step of database setup:
On IIS 7.5, if you upload big file thru WCF service, you might get http 404.13 error from IIS server.
HTTP Error 404.13 – Not Found
The request filtering module is configured to deny a request that exceeds the request content length.
The solution is set a higher value for maxAllowedContentLength in web.config of application
<configuration>
<system.webServer>
<security>
<requestFiltering>
<requestLimits maxAllowedContentLength="300000000"/>
</requestFiltering>
</security>
</system.webServer>
</configuration>
It’s very common for developer to generate a GUID in code to guarantee uniqueness. Here is the sample code to generate a GUID in Perl
my $guid = `uuidgen.exe`;
chomp $guid;
Uuuidgen.exe is a tool from DotNet Framework. You can append "-c" option to generate uppercase letters
Run uuidgen /? to see the detail usage of uuidgen.
Microsoft UUID Generator v1.01 Copyright (c) Microsoft Corporation. All rights reserved.
usage: uuidgen [-xisconvh?]
x – Generate sequential (V1) UUIDs
i – Output UUID in an IDL interface template
s – Output UUID as an initialized C struct
c – Output UUID in upper case
o<filename> – redirect output to a file, specified immediately after o
n<number> – Number of UUIDs to generate, specified immediately after n
v – display version information about uuidgen
h,? – Display command option summary
When you use MSBuild, a handful of properties are available to you out of the box that cannot be modified. These are known as reserved properties. Following table presents all reserved properties in MSBuild 4.
If you build a web application with Chart control for ASP.NET 4.0 and deploy the site to web server. You might get following error on the live site:
The temp directory in chart handler configuration is not accessible
To resolve this, first go to web.config and find the ChartImage directory in appsettings.
<appSettings>
<add key="ChartImageHandler" value="storage=file;timeout=20;dir=c:TempImageFiles;" />
</appSettings>
The go to the temp chart image directory and grant read and write permission to IIS working process account in share properties – security tab. Note that the account runs IIS working process is different between IIS 7 and IIS 7.5
Visual Studio has a great feature to easily remove all dead using statements in your code.
The steps are pretty straightforward.
There are two versions of the TraceWrapper.dll in SCVMM install CD. One is x86 version and the other is x64 version. When you build your application on top of SCVMM library Microsoft.SystemCenter.VirtualMachineManager, it’s very important to pick up the correct version TraceWrapper.dll. In general, you should copy the 32 bit dll if you are using 32 bit system, copy 64 bit dll if you are using 64 bit system. Otherwise following BadImageFormatException would occur during runtime.
Could not load file or assembly ‘TraceWrapper, Version=1.0.523.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35’ or one of its dependencies. An attempt was made to load a program with an incorrect format.
However, you should keep using 32 bit TraceWrapper on a 64 bit system for following scenarios:
This is because in 64 bit windows, processes in WOW64 mode are 32 bit processes and can’t load 64 bit TraceWrapper.dll.
If you want to know the version of currently executing managed assembly, you can use Reflection.Assembly.
Here is code snippet which can be used to do get managed assembly version.
private string GetVersion()
{
return Assembly.GetExecutingAssembly().GetName().Version.ToString();
}