Question

I am surprised that I can’t initialize my fields in structs, why is it like that? Like:

struct MyStruct {     private int a = 90; } 

but it’s a complie time error. I don’t know why it’s a problem? Please explain this to me.

Answer 1

The reason is mainly performance. Consider the following,

var a = new MyStruct[1000]; 

If C# allowed initialization of fields in a struct then the initialization would have to be performed 1000 times, once for each element in the array. C# wanted to avoid such kinds of implicit behavior as might be found in other languages.