In VSTO Excel, how to detect data in cells?

Question

A process to quickly detect whether there is data in a given worksheet or not, without actually looping through all of the rows/columns of the worksheet.

For my curre

Answer 1

This should be pretty fast:

    private void CheckForContent()
    {
        Worksheet activeSheet = ActiveSheet;
        var range = activeSheet.get_Range("A1", GetExcelColumnName(activeSheet.Columns.Count)+activeSheet.Rows.Count.ToString() );
        range.Select();
        range.Copy();
        string text = Clipboard.GetText().Trim();
        if(string.IsNullOrEmpty(text))
        {
            MessageBox.Show("No text");
        }
    }

    private string GetExcelColumnName(int columnNumber)
    {
        int dividend = columnNumber;
        string columnName = String.Empty;
        int modulo;

        while (dividend > 0)
        {
            modulo = (dividend - 1) % 26;
            columnName = Convert.ToChar(65 + modulo).ToString() + columnName;
            dividend = (int)((dividend - modulo) / 26);
        }
        return columnName;
    }