warning CS0219: The variable 'ErrorCheck' is assigned but its value is never used

private void ProcessSpreadSheet()
        {
            Excel.Application xlApp = null; //  Excel application object
            Excel.Workbook xlWorkBook = null; //  Excel Workbook object
            Excel.Worksheet xlWorkSheet = null; //  Excel Worksheet object
            Excel.Range inputRange = null; //  Excel Worksheet Range object
            int rowCount = 0, currRow = 0; //  row iterator
            string gradeName = null; //  character input variables
            decimal Price = 0.00M; //  price as a decimal number
            Excel.Range cellPriceValue = null;
            Excel.Range cellGradeValue = null;
            Excel.Range cellDiscountValue = null;
            bool WheatIndicatorFlag = false;
            bool DurumIndicatorFlag = false;
            bool BarleyIndicatorFlag = false;
            bool DesBarleyIndicatorFlag = false;
            bool WarningErrorTab = false;
           

            decimal?[,] discounts = new decimal?[4, 3];
            string[,] discountnames = new string[4, 3] { {"WheatTough", "WheatDamp", "WheatStone"},  
                                                               {"DurumTough", "DurumDamp", "DurumStone"},
                                                               {"BarleyTough", "BarleyDamp", "BarleyStone"},
                                                               {"DesBarleyTough", "DesBarleyDamp", "N/A"} };

            int pricesColumn = 0;
            int count_rows = 0;
            decimal sum_prices = 0.00M;
            InitialPriceReporting.InitialPriceReportingServiceWS.PriceListHeaderObject PLHO = new InitialPriceReporting.InitialPriceReportingServiceWS.PriceListHeaderObject();
            PLHO.price_list_hdr_id = dr["PRICE_LIST_HDR_ID"].ToString();


            //  Define the input SS and open the 1st worksheet
            xlApp = new Excel.Application();
            xlWorkBook = xlApp.Workbooks.Open(InputFileName.Text, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing);
            xlWorkSheet = ((Excel.Worksheet)(xlWorkBook.Worksheets.get_Item(1)));

            //  Store the rows and columns used in the input SS into inputRange
            inputRange = xlWorkSheet.UsedRange;

            //  Read all used rows in the input SS, starting at the 11th row (rows are numbered from 0)
            //  Data of interest is in columns O and R (numbered 15 and 18 respectively)
            //  Initial prices load file has the prices in column 16

            //  All other load files have their prices in column 18
            if (rbtnInitialPriceOption.Checked)
            {
                pricesColumn = 16;
            }
            else
            {
                pricesColumn = 18;
            }

            for (rowCount = 10; rowCount <= inputRange.Rows.Count; rowCount++)
            {
                //  Read the grade name and price
                //  skip rows where the grade name is empty
                //  validate each line, if invalid, call an write_error function, passing in rowCount, grade name, price, E/W flag, and ErrMsg
                bool ErrorCheck = false;*************************************************WARNING.
                try
                {
                    cellPriceValue = ((Excel.Range)(inputRange.Cells[rowCount, pricesColumn]));
                    bool CheckNumeric = InitialPriceReporting.clsFunction.IsNumeric(cellPriceValue.Value2.ToString());

                    if (cellPriceValue.Value2.ToString().Length > 0 || cellPriceValue.Value2 != null)
                    {
                        if (cellPriceValue.Value2.ToString() == "Stones" || cellPriceValue.Value2.ToString() == "Tough")
                        {
                            currRow = rowCount + 1; //  skip a row to where the discounts are
                            break;
                        }