C # params keyword

Source: Internet
Author: User

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

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