public static IEnumerable <string> GenerateFileNames(string directory, string primaryFileName, string extension)
{
Verify.IsNeitherNullNorEmpty(directory, "directory");
Verify.IsNeitherNullNorEmpty(primaryFileName, "primaryFileName");
primaryFileName = Utility.MakeValidFileName(primaryFileName);
for (int i = 0; i <= 50; i++)
{
if (i == 0)
{
yield return(string.Concat(Path.Combine(directory, primaryFileName), extension));
}
else if (40 < i)
{
object[] objArray = new object[] { Path.Combine(directory, primaryFileName), " (", Utility._randomNumberGenerator.Next(41, 9999), ")", extension };
yield return(string.Concat(objArray));
}
else
{
string[] strArrays = new string[] { Path.Combine(directory, primaryFileName), " (", i.ToString((IFormatProvider)null), ")", extension };
yield return(string.Concat(strArrays));
}
}
}