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Unique Constraint in Entity Framework Code First
...anism to achieve it:
http://msdn.microsoft.com/en-us/library/hh770484(v=vs.103).aspx
http://blogs.msdn.com/b/adonet/archive/2012/02/09/ef-4-3-code-based-migrations-walkthrough.aspx
Basically you need to insert a call like this in one of your migration scripts:
CreateIndex("TableName", new stri...
403 Forbidden vs 401 Unauthorized HTTP responses
...telling you, “you aren’t
authenticated–either not authenticated at all or authenticated
incorrectly–but please reauthenticate and try again.” To help you out,
it will always include a WWW-Authenticate header that describes how
to authenticate.
This is a response generally retu...
Subqueries vs joins
I refactored a slow section of an application we inherited from another company to use an inner join instead of a subquery like:
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C programming in Visual Studio
...17396
From the link above:
By default, the Visual C++ compiler treats all files that end in .c as C source code, and all files that end in .cpp as C++ source code. To force the compiler to treat all files as C regardless of file name extension, use the /Tc compiler option.
That being said, I ...
What to do Regular expression pattern doesn't match anywhere in string?
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Contrary to all the answers here, for what you're trying to do regex is a perfectly valid solution. This is because you are NOT trying to match balanced tags-- THAT would be impossible with regex! But you are only matching what's in one ...
Using a piano keyboard as a computer keyboard [closed]
I have RSI problems and have tried 30 different computer keyboards which all caused me pain. Playing piano does not cause me pain. I have played piano for around 20 years without any pain issues. I would like to know if there is a way to capture MIDI from a MIDI keyboard and output keyboard stroke...
What is the difference between a definition and a declaration?
...// extern can be omitted for function declarations
class foo; // no extern allowed for type declarations
A definition actually instantiates/implements this identifier. It's what the linker needs in order to link references to those entities. These are definitions corresponding to the above declara...
'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine
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Well, you need to install it. You're looking for:
The 2007 Office System Driver: Data Connectivity Components.
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Service Reference Error: Failed to generate code for the service reference
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Have to uncheck the Reuse types in all referenced assemblies from Configure service reference option
Check this for details
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Visual Studio 2010 isn't building before a run when there are code changes
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Yup this fixed it for me! Just clicked all the checkbox's next to build in the configuration manager. Thanks Tim!
– chaz
Mar 30 '12 at 3:38
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