Regarding Private constructor & static constructor in c#

1. We use a private constructor if we don't want the user to be able to instantiate the class (though nowadays we can use a static class instead) or we only want the user to be able to instantiate the class using a static 'factory' method so we can control the number of instances created.

2. We use a static constructor to initialize static fields which can't (or can't easily) be initialized when they are declared.

3. Perhaps if you're creating a singleton i.e. a class which only has a single instance. See this link:

http://csharpindepth.com/Articles/General/Singleton.aspx

4. In the circumstances mentioned in #2 above. Suppose you're initializing a large static array using a formula for instance.

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Vulpes13y ago
1. We use a private constructor if we don't want the user to be able to instantiate the class (though nowadays we can use a static class instead) or we only want the user to be able to instantiate the class using a static 'factory' method so we can control the number of instances created.

2. We use a static constructor to initialize static fields which can't (or can't easily) be initialized when they are declared.

3. Perhaps if you're creating a singleton i.e. a class which only has a single instance. See this link:

http://csharpindepth.com/Articles/General/Singleton.aspx

4. In the circumstances mentioned in #2 above. Suppose you're initializing a large static array using a formula for instance.

Incidentally, please don't post your email address or telephone number on a public site such as this - it's asking for trouble!