Private constructor in C#

Question

Dear Sir  in which scenario we use private constructor. Thanks

Manas Mohapatra · Answer

It helps to restrict not instantiate the class if the constructor is private. Then you need to create a method/property to instantiate the class in that case when you will insatiate the class private constructor get fired and breakpoint hits. Secondly we can use in Singleton to avoid create class instance. See the example below: public class Test { public static readonly Test Instance = new Test(); // Singleton pattern. public int A; // Instance field. private Test() // This is the private constructor. { this .A = 5; } }

Vinay Singh · Answer

You can use them to initialize some standard set of fields before other constructors for example: Check the below link this will help you https://www.codeproject.com/Questions/668006/What-is-the-use-of-a-Private-Constructors-in-Cshar http://www.c-sharpcorner.com/forums/what-is-the-use-of-private-constructor-in-c-sharp http://www.aspdotnet-suresh.com/2013/09/csharp-private-constructor-with-example.html https://msdn.microsoft.com/en-us/library/kcfb85a6.aspx