Question

i have some vba code that i need to convert to c#

Select Case letter0
    Case "A01"
    Cells(rownum, 2).Value = "1"
    Case "B01"
    Cells(rownum, 2).Value = "2"
    Case "C01"
    Cells(rownum, 2).Value = "3"
    Case "D01"
    Cells(rownum, 2).Value = "4"
    Case "E01"
    Cells(rownum, 2).Value = "5"
    Case "F01"
    Cells(rownum, 2).Value = "6"
    Case "G01"
    Cells(rownum, 2).Value = "7"
    Case "H01"
    Cells(rownum, 2).Value = "8"
    Case "A02"
    Cells(rownum, 2).Value = "9"
    Case "B02"
...
..

i understand how to do a switch on this, but is there an easier method?

i will not be checking CELLS(rownum.........) instead of will be doing switch(somestring)

is there an easier way to do this than explicitly write every single case?

Answer 1

public static string GetCellValue(string letter0) {
    var line = Convert.ToInt32(letter0.Substring(1, 2));
    var column = Convert.ToInt32(letter0[0] - 'A' + 1);
    var result = (line - 1) * 8 + column;

    return Convert.ToString(result);
}

...

Cells[rownum, 2].Value = GetCellValue(letter0);         

Yes, it works (for your example at least). Assuming, of course, that letter0 is always in the format A99 – no validation included!

Edit I guess the algorithm is a little bit clearer now…