How do I convert a single char to a string?

Question

I'd like to enumerate a string and instead of it returning chars I'd like to have the iterative variable be of type string. This probably isn't possible to have the iterative type be a string so what is the most efficient way to iterate through this string?

Do I need to create a new string object with each iteration of the loop or can I perform a cast somehow?

String myString = "Hello, World";
foreach (Char c in myString)
{
    // what I want to do in here is get a string representation of c
    // but I can't cast expression of type 'char' to type 'string'
    String cString = (String)c; // this will not compile
}

Answer 1

It seems that the obvious thing to do is this:

String cString = c.ToString()

Answer 2

Use the .ToString() Method

String myString = "Hello, World";
foreach (Char c in myString)
{
    String cString = c.ToString(); 
}

Answer 3

probably isn't possible to have the iterative type be a string

Sure it is:

foreach (string str in myString.Select(c => c.ToString())
{
...
}

Any of the suggestions in the other answers can be substituted for c.ToString(). Probably the most efficient by a small hair is c => new string(c, 1), which is what char.ToString() probably does under the hood.

Answer 4

Why not this code? Won't it be faster?

string myString = "Hello, World";
foreach( char c in myString )
{
    string cString = new string( c, 1 );
}

Answer 5

You have two options. Create a string object or call ToString method.

String cString = c.ToString();
String cString2 = new String(c, 1); // second parameter indicates
                                    // how many times it should be repeated

Answer 6

String cString = c.ToString();