Question

I have an array of drive letters and I need to append a colon to each letter and then pass the array to another function. Can I do this or do I need to create a new array? Or maybe not an array at all but some kind of List instead?

string source = "C|D|E";
string[] sourcearray = source.Split('|');
foreach (string driveletter in sourcearray)
{
    //need to append ":" to each drive letter
}

EDIT: There are times when the source array could end in a pipe:

string source = "C|D|E|";

When that happens the last element in the array will be a colon if I use a common for loop, and I can’t have this. How best to handle this? When this happens the final array needs to look like:

C: D: E:

Thanks.

Answer 1

Strings are immutable, so you can’t change the string instance but you must change the array slots with new strings:

string source = "C|D|E";
string[] sourcearray = source.Split(new []{'|'}, StringSplitOptions.RemoveEmptyEntries);
for(int i=0; i < sourcearray.Length; i++)
{
   sourcearray[i] = sourcearray[i] + ":";
}