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How can I extract a string from an excel cell?
Excel.ApplicationClass excelApp = new Excel.ApplicationClass();

        excelApp.Visible = true;

        Excel.Workbook excelWorkbook = excelApp.Workbooks.Open("C:\Users\user\Desktop\list.xls", 0, false, 5, "", "",
        false, Excel.XlPlatform.xlWindows, "", true, false, 0, true, false, false);

        Excel.Sheets excelSheets = excelWorkbook.Worksheets;

        string currentSheet = "Sheet1";
        Excel.Worksheet xlws = (Excel.Worksheet)excelSheets.get_Item(currentSheet);

xlws.Cells[1,1].Value.ToString();

Range range = xlws.get_range("A1", "A1");
object[] data = range.get_Value(XlRangeValueDataType.xlRangeValueDefault);
string str = (string)data[0];

var cellValue = xlws.Cells[1,1].Value