how to find the text position in excel in csharp

                
                        int rowStart = worksheet.Dimension.Start.Row; 
int rowEnd = worksheet.Dimension.End.Row;

string cellRange = rowStart.ToString() + ":" + rowEnd.ToString();

var searchCell =from cell in worksheet.Cells[cellRange] //you can define your own range of cells for lookup
                 where cell.Value.ToString() == "Total"
                 select cell.Start.Row;

int rowNum = searchCell.First();