<SqlFunction(FillRowMethodName:="FillFileRow")> _
Public Shared Function GetFileDetails(ByVal directoryPath As String) As IEnumerable

   Try

      Dim di As DirectoryInfo = new DirectoryInfo(directoryPath)
      return di.GetFiles()

   Catch dnf As DirectoryNotFoundException

      Dim message As String() = {dnf.ToString() }
      return message

   End Try
End Function

[SqlFunctionAttribute(FillRowMethodName = "FillFileRow")]
public static IEnumerable GetFileDetails(string directoryPath)
{
   try
   {
      DirectoryInfo di = new DirectoryInfo(directoryPath);
      return di.GetFiles();
   }
   catch (DirectoryNotFoundException dnf)
   {
      return new string[1] { dnf.ToString() };
   }
            
}