Extension: String;
The Extension property returns a file extension including ".".
Sub Main;
Var
Dir: IDirectoryInfo;
FileSInfo: IFileSystemInfo;
s: String;
Begin
Dir:=New DirectoryInfo.Attach("c:\New_folder");
If Dir.Exists And (Dir.GetFiles("*").Count<>0) Then
s:=Dir.GetFiles("*").Item(0).Extension;
End If;
Dispose Dir;
End Sub Main;
After executing the example, the "s" variable contains extension of the first file, if the New_folder directory exists and contains files.
See also: