Configuration.AppSettings getting null in C# class library

Default configuration for class library is the configuration file of the application that is consuming it. For example, if it is web application, then move your configurations to web.config.

A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections.

Try following! It worked for me. :)

• Go to sqlservr.exe in the task manager processes
• Terminate the process
• Go to Services
• Start SQL Server(SQL Express)
• Try to connect again

The controller for path was not found or does not implement IController in WebAPI

You will get this exception when you are trying to access WebApi controller through a jquery client as Ajax request. To fix this issue, in the url property give path to controller as given below:

url: '/api/controllername/actionname'

The resource cannot be found. in VS 2012 WebAPI

Funny solution!

If you get this error when running the app from Visual Studio 2012, go back to app and make sure HTML file is not selected in the solution explorer. It worked for me! Don't know the reason behind that though.

Missing Entity Framework dll in VS2012

1. Right click references
2. Manage Nuget Packages
3. Select Entity Framework

For more info:
http://msdn.microsoft.com/en-us/data/ee712906

An unhandled exception of type 'Emgu.CV.Util.CvException' occurred in Emgu.CV.dll Additional information: OpenCV: Unknown array type

To fix this issue, check whether the number of columns, rows and channels of source matrix match with the destination matrix.

When converting from OpenCV to EmguCV:
CV_32FC1 means 32 bit floating point single channel matrix

An unhandled exception of type 'Emgu.CV.Util.CvException' occurred in Emgu.CV.dll Additional information: OpenCV: type == src2.type() && src1.cols == src2.cols && (type == CV_32F || type == CV_8U) in BOWImgDescriptorExtractor

Make sure the feature extractor used to generate vocabulary and the extractor given for BOWImgDescriptorExtractor are of same type. (E.g., SIFT)

More info:
http://stackoverflow.com/questions/15181699/error-in-bowimgdescriptorextractor-in-emgucv
http://code.opencv.org/issues/1879

View Property manager in VS2010

Tools > Import and Export Settings > Reset all settings >  Visual C++ Development Settings

.mat files associated with MS Access short cut

Control Panel > Default Programs > Associate a file type or protocol with a specific program > Select .mat > Change > Matlab.exe

http://www.mathworks.in/support/solutions/en/data/1-VW0R7/

Load configuration settings dynamically using Matlab Eval function

Configuration script file = config.m

% Test function to call configuration setting dynamically

function test (config)

eval (config)
....

% script to call function 'test'
test('config');