public bool IsInRange(string value)
{
var number = LetterSequence.GetNumber(value);
if (Start <= number && number <= End)
{
return((number - Start) % Step == 0);
}
else
{
return(false);
}
}
public static string GetColName(int col) => LetterSequence.GetLetter(col);
public static int GetCol(string colName) => LetterSequence.GetNumber(colName);
public string GetValue(int index) => LetterSequence.GetLetter(index);
public LetterRange(string start, string end, int step) : this(LetterSequence.GetNumber(start), LetterSequence.GetNumber(end), 1)
{
}