Looping through HTMLInputFiles

I have HTMLFileInput fields with runat="server" like so:

<INPUT id="file1" type="file" name="file" runat="server">
<INPUT id="file2" type="file" name="file" runat="server">
<INPUT id="file3" type="file" name="file" runat="server">
...etc....

When the button is pressed to save the form/upload the files, I have a pretty lengthy sub that each of these boxes needs to be passed to.  Is there a way to do this via a looping structure of some sort, instead of me having to call the function once for each file field?

I want to avoid doing this:

-------------------------------------------
DoSomethingToMyFile(file1)
DoSomethingToMyFile(file2)
DoSomethingToMyFile(file3)

Function DoSomethingToMyFile(myFile as HTMLInputFile)
End Function
-------------------------------------------

because the page will have up to 30-40 file fields.  I'd rather do something to this effect:

-------------------------------------------
For i as Integer = 1 to intNumFiles
     DoSomethingToMyFile("file" & i)
Next

Function DoSomethingToMyFile(myFile as HTMLInputFile)
End Function
-------------------------------------------

You used to be able to do this in vbscript with the "Eval" statement - but I know that doesn't really apply in .NET.  Any ideas?

Thanks,
Clay