How to add item in array through a foreach?

Question

I’m doing a check in a directory where I list all items with a specific extension.

And I need to add the items into one array through a foreach.

Follow part of the code I’ve tried.

 DirectoryInfo di = new DirectoryInfo(_caminhoEmail);
 FileInfo[] rgFiles = di.GetFiles("*.ost");
 string[] pasta = new string[] { };
 foreach (FileInfo item in rgFiles)
 {
     pasta = new string[] { item.FullName};
 }
 return pasta;

But with this code it always overrides taking only the last value of the array in rgFiles[].

How do I add items to Array pasta and return it at the end?

Answer 1

Can use Linq, not specified in this specific case to use a repeating structure.

DirectoryInfo di = new DirectoryInfo(_caminhoEmail);
FileInfo[] rgFiles = di.GetFiles("*.ost");
return rgFiles.Select(e => e.FullName).ToList();

Answer 2

I believe the problem is attribution. It needs to be array really? I think it would be better to do with a for.

 var di = new DirectoryInfo(_caminhoEmail);
 FileInfo[] rgFiles = di.GetFiles("*.ost");
 var pasta = new string[regFiles.Length];
 for (var i = 0; i < rgFiles.Length; i++) pasta[i] = rgFiles[i].FullName;
 return pasta;

I put in the Github for future reference.