c# - string = string + int: What's behind the scenes? -

You can add a string in C # and say, an integer:

  string Sth = "something" + 0;  

My questions are:

1. By assuming the fact that you can add a string and an integer, the cables like C # Does not allow it to start:

     string sth = 0; // Error: The source type 'int' can not be changed to target type 'string'  

2. How the C # # forms of string Is it 0.ToString () or (string) 0 or something else?

3. How to get the answer to the last question?

To make this call, such as:

  String sth = String.Concat ("some", 0);  

(Note that this particular line will actually be optimized by the compiler)

This method is defined as follows: (Taken from Net Reference Source )

Public Static String Context (object arg0, object arg1) {if (arg0 == null) {arg0 = String.Empty; } If (arg1 == faucet) {arg1 = String.Empty; } Return concat (arg0.ToString (), arg1.ToString ()); }

(This String.Concat (string, string) call )

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To find it, , or Reflector (no optimizer in IL or C #) to see if the + line is compiled for whom.