I have excel file with sheet1 that has a value I need to read on row 2 and column 10. Here is my code.
Excel.Workbook excelWorkbook = excelApp.Workbooks.Ope
You need to cast it to a string (not an array of string) since it's a single value.
var cellValue = (string)(excelWorksheet.Cells[10, 2] as Excel.Range).Value;