public override bool isValid()
{
// filter if there are no files
if (!Filenames.Any())
{
return(false);
}
// filter if there is only one file with no name
if (Filenames.Count == 1 && Filenames[0] == string.Empty)
{
return(false);
}
return(true);
}
public override bool isValid()
{
return(Filenames.Any(str => !String.IsNullOrWhiteSpace(str)));
}