@using System.Data
@{
    ReportTask task = Model;
    Report report = task.Report;   
    foreach (var model in report.Models) 
    {
        foreach (var page in model.Pages) 
        {
            var dataTable = page.DataTable;
            foreach (var line in page.DataTable.Lines) 
            {
                int i = dataTable.BodyStartRow, cols = dataTable.ColumnCount;
                string[] lastValues = new string[dataTable.ColumnCount];
                for (int j = 0; j < cols; j++)
                {
                    //init first values
                    var cell = dataTable[i, j];
                    if (cell.Element != null && cell.Element.ShowSubTotals) {
                       lastValues[j] = cell.DisplayValue;
                    }
                }
                i++;
                
                while (i < dataTable.BodyEndRow)
                {
                    string currentValue = "";
                    for (int j = 0; j < cols; j++)
                    {
                        var cell = dataTable[i, j];
                        if (cell.Element != null && cell.Element.ShowSubTotals) {
                            if (lastValues[j] == cell.DisplayValue) {
                                cell.Value = "";
                             }
                             else {
                                lastValues[j] = cell.DisplayValue;
                             }
                        }
                    }
                    i++;
                }
           }
        }
    }
}