C # params keyword

Key points of the params array

The params in the C # development language is a keyword that can specify method parameters that take parameters at variable number of arguments. Useful when the number of arguments to a function is variable and the code being executed is very small!

1 class Program2 {3  　　 Static voidMain (string[] args)4  　　　 {5Sum (1,2,"a");6  　　　　 Console.readkey ();7  　　　 }8 Static voidSum (params Object[] numstack)9 {Ten  　　  for(inti =0; i < numstack.length; i++) One  　　　 { A  　　　　 Console.WriteLine (Numstack[i]); -  　　　 } -  　　 } the}

The 1.params keyword cannot be used on multidimensional arrays.

1  Public Static Min (paramsint[,],table)...  

2. You cannot use the overloaded method with only the params.

1  Public Static int Min (int[] paramlist)

2  Public Static int Min (paramsint

3 The ref and out pass params are not allowed to be used simultaneously

1  Public Static int Min (refparamsint[] paramlist)
... 2  Public Static int Min (outparamsint[] paramlist)
......

4.params array must be the last parameter

1  Public Static int Min (paramsint[] paramlist,int i)//error

5. No params method priority is higher than the priority with the params method

1  Public Static int Min (int lefthandside,int  righthandside)2publicstatic  int Min (paramsint[] paramlist)

C # params keyword