Shulou(Shulou.com)06/01 Report--

This article is about how .net Core configures and implements automatic updates. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

.net Core migrates the configuration from the previous Web.Config to the appsettings.json file and uses ConfigurationBuilder to read the configuration file. And can be set after the configuration file changes, automatically reload, so that you do not have to restart your program.

12345var builder = new ConfigurationBuilder () .SetBasePath (env.ContentRootPath) .AddJsonFile ("appsettings.json", optional: true, reloadOnChange: true) .AddJsonFile ($"appsettings. {env.EnvironmentName} .json", optional: true) .AddenvironmentVariables (); read configuration information

The configuration is much more convenient to read than before, and it can be used directly. After ConfigurationBuilder calls the Build () method, you can take the value directly:

12Configuration = builder.Build (); var value = Configuration ["Section:Key"]

When the configuration is updated, using Configuration ["Section:Key"] also gets the latest value.

Configure strong typing

You can directly use strong typing to convert the configuration file into your object for direct use, as long as the properties of the object correspond to one-to-one in the configuration.

1services.Configure (configuration.GetSection ("Database"))

And then inject it into the constructor

?

1234public EntityFrameWorkConfigure (IOptions dataBaseOption) {_ dataBaseOption = dataBaseOption;}

Note: IOptions is a singleton, that is, when you modify the appsettings.json will not change its value, so be sure to restart your program will be updated.

Use IOptionsSnapshot to update automatically

If you want to update your configuration automatically without restarting the program when using strong typing, you can use IOptionsSnapshot

1234public EntityFrameWorkConfigure (IOptionsSnapshot dataBaseOption) {_ dataBaseOption = dataBaseOption;} Thank you for reading! This is the end of the article on "how to configure and implement automatic updates for .net Core". I hope the above content can be of some help to you, so that you can learn more knowledge. if you think the article is good, you can share it for more people to see!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.