I have an object like this:
public class SavedFileInfo
{
public String Address;
public Int32 DataPort;
public Int32 AudioPort;
public String Description;
public String Filename;
}
And I have an array of those objects like this... SavedFileInfo[] mySFI;
How can I now get an array of the Filename field (such as string[] filenames) from within my collection of the SavedFileInfo objects?
Personally I'd use LINQ:
var files = mySFI.Select(x => x.Filename)
.ToArray();
Alternatively, there's Array.ConvertAll:
var files = Array.ConvertAll(mySFI, x => x.Filename);
As an aside, I would strongly advise you to use properties instead of fields. It's very easy to change your code to use automatically implemented properties:
public class SavedFileInfo
{
public String Address { get; set; }
public Int32 DataPort { get; set; }
public Int32 AudioPort { get; set; }
public String Description { get; set; }
public String Filename { get; set; }
}
String[] fileNames = new string[mySFI.Length];
for (int i = 0; i < mySFI.Length; i++)
fileNames[i] = mySFI[i].Filename;
I might be missing something here, but if you really mean "How" to do it, and not "what's the simplest way to do it" (for that - see Skeet's answer) then it's important to know how to do it in a non-linq way as well. If I misunderstood you - my apologies.
SavedFileInfo[] mySFI;
var fileNameArr = mySFI.Select(p=>p.Filename).ToArray();
