In c# why (char)(1) + (char)(2) results in int 3

Question

I am trying to covert some VB.NET code to C# and found this interesting thing. Adding two chars returns different results in VB.NET and C#. VB.NET - returns string ``` Chr(1) & Chr(2) = " " ``` C# - returns int ``` (char)(1) + char(2) = 3 ``` How can i add(concatenate) two chars in C#?

Accepted Answer

In C# `char` is a 16-bit numeric type, so `+` means addition, not concatenation. Therefore, when you add `a` and `b` you get `a+b`. Moreover, the result of this addition is an `int` (see a quick demo).

If by "adding two characters" you mean "concatenation", converting them to a strings before applying operator `+` would be one option. Another option would be using `string.Format`, like this:

```
string res = string.Format("{0}{1}", charA, charB);
```

In c# why (char)(1) + (char)(2) results in int 3

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