ASP. NET Core Basics

First, configuration management

1, read memory configuration

usingSystem;usingMicrosoft.Extensions.Configuration;usingSystem.Collections.Generic;namespaceconsoleapp1{classProgram {Static voidMain (string[] args) {Dictionary<string,string> dic =Newdictionary<string,string>() {                { "name","Hunter"},                { " Age","Ten"}            }; varBuilder =NewConfigurationbuilder (). Addinmemorycollection (DIC)//use the values in DIC when age has no value                .            Addcommandline (args); varConfiguration =Builder.            Build (); Console.WriteLine ($"name:{configuration["Name"]}"); Console.WriteLine ($"age:{configuration["Age"]}");        Console.readkey (); }    }}

Demo

2. Read JSON file

usingSystem;usingMicrosoft.Extensions.Configuration;usingSystem.Collections.Generic;namespaceconsoleapp1{classProgram {Static voidMain (string[] args) {            varBuilder =NewConfigurationbuilder (). Addjsonfile ("Class.json"); varConfiguration =Builder.            Build (); Console.WriteLine ($"no:{configuration["No"]}"); Console.WriteLine ($"name:{configuration["Name"]}"); Console.WriteLine ("Student:"); Console.WriteLine ($"no:{configuration["Student0: No"]},name:{configuration["Student0: Name"]}"); Console.WriteLine ($"no:{configuration["Student1: No"]},name:{configuration["Student1: Name"]}");        Console.readkey (); }    }}

Demo

{  "No":"1",  "name":"ASP . NET Core",  "Student": [    {      "No":"1",      "name":"Zhang San"    },    {      "No":"2",      "name":"Zhang San"    }  ]}

Class.json

3, Read Appsettings.json

usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Threading.Tasks;usingMICROSOFT.ASPNETCORE.MVC;usingMicrosoft.Extensions.Configuration;namespacewebapplication1.controllers{ Public classHomecontroller:controller {Privateiconfiguration _configuration;  PublicHomeController (iconfiguration configuration) {_configuration=configuration; }         PublicIactionresult Index () {Class C=NewClass (); _configuration.            Bind (c); returnView (); }    }}

Construction Injection IConfiguration

usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Threading.Tasks;namespacewebapplication1{ Public classClass { Public stringNo {Get;Set; }  Public stringName {Get;Set; }  Publicienumerable<student> Student {Get;Set; } }     Public classStudent { Public stringNo {Get;Set; }  Public stringName {Get;Set; } }}

class

{  "No":"1",  "name":"ASP . NET Core",  "Student": [    {      "No":"1",      "name":"Zhang San"    },    {      "No":"2",      "name":"Zhang San"    }  ]}

Appsettings.json

ASP. NET Core Basics