How can i get the Cell address from excel

Question

How can i get the Cell address from excel given a row and column number for example

row 2 and col 3 should return C2... Please help

Answer 1

I'm not a big user of VSTO C# - I usually opt for VBA. However, the following pair of functions might be useful for you. Unsure if they can be streamlined some more:

public string RangeAddress(Excel.Range rng)
{
    return rng.get_AddressLocal(false, false, Excel.XlReferenceStyle.xlA1,
           missing, missing);
}
public string CellAddress(Excel.Worksheet sht, int row, int col)
{
    return RangeAddress(sht.Cells[row, col]);
}

The RangeAddress will take any Excel range and throw you back the address. If you want the absolute style (with dollar signs, e.g. $C$3) then you have to change the first two parameters of the get_AddressLocal call to true, true.

To get the cell address from a row/col pair, you can use CellAddress. It does need a sheet to get the address. However, you could swap in (Excel.Worksheet)ActiveSheet if you don't want to provide a sheet (this may or may not work, depending on what you have open in your VSTO session).

Answer 2

Just an improvement, the col-- was in the wrong place

static string GetCellAddress(int row, int col)
    {
        StringBuilder sb = new StringBuilder();

       do
        {
            col--;
            sb.Insert(0, (char)('A' + (col % 26)));
            col /= 26;
        } while (col > 0);
        sb.Append(row);
        return sb.ToString();
    }

Answer 3

This one (untested) should also work with column addresses over that are over 26:

using System.Text;

public string GetCellAddress(int row, int col) {
    StringBuilder sb = new StringBuilder();
    col--;
    do {
        sb.Insert(0, (char)('A' + (col % 26)));
        col /= 26;
    } while (col > 0);
    sb.Append(row);
    return sb.ToString();
}

Corrected: the column address was backwards