.net - App wide Static Variable C# Console application -

i looking use variable config instantiated in program.cs able use in other classes have. understand, need use dependency injection, not sure how achieve.

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program.cs

public class program {     static iconfigurationroot config = null;      public static void main(string[] args)     {         config = new configurationbuilder()           .setbasepath(environment.currentdirectory)           .addjsonfile("appsettings.json")           .addenvironmentvariables()           .build();     } } 

testclass.cs

public class testclass {     public void dosomething()     {          // need use instantiated config object here.     } } 

you can either make config static public, can accessed anywhere in application, or, if want use dependency injection, make testclass constructor ask 1 iconfigurationroot:

public testclass(iconfigurationroot config)  {     // need     // save reference on local member, example } 

now every time instantiate new testclass, have pass argument constructor iconfigurationroot object use. if proves troublesome (e.g.: instantiate testclass lot, in lot of different places), might use testclassfactory:

public class testclassfactory {     public testclass get()     {         // logic here new testclass object         // iconfigurationroot object used create testclasses         // chosen here.     } } 

also, if don't want use asp.net types directly, may, crowcoder pointed out, make config repository, database model. repository fetch configuration json file, example.

something this:

public class configurationrepository : iconfigurationrepository {     public string getbasepath()     {         // read base path config files     }      public string setbasepath()     {         // write base path config files     } } 

and use di pass iconfigurationrepository testclass.