Change data in Key schedule

[pmazzoni123]

I'm trying to bring in some text from an Excel file and use it to populate a key schedule I already have created in Revit.  The key schedule that I want to modify will be the active view when I use this command.  I've figured out how to access and store the Excel data but I can't figure out how to push it into the schedule. 

This is what I have so far:

            
            //List to store each class object associated with the RowData class 
	    //which in turn holds the data from each row in the Excel file.
            List<RowData> rowList = new List<RowData>();

            for (int r = 1; r <= rowCount; r++)
            {
                //This addds the new instance of the class RowData to the list rowList.
                rowList.Add(new RowData());
                rowList[r - 1].NoteNumber = xlRange.Cells[r, 1].Value2;
                rowList[r - 1].NoteText = xlRange.Cells[r, 2].Value2;
            }
	    UIDocument uiDocument = commandData.Application.ActiveUIDocument;
            Document document = uiDocument.Document;
            View activeView = uiDocument.ActiveView;

            Transaction t = new Transaction(document, "Import Schedule Footer Notes");
            t.Start();
            
            //I want to go through the key schedule row by row and update the first 2 cells in that row.
            foreach (RowData n in rowList)
            {
                //I'm not sure what to put here to change the text in the cell.
		//current row first cell = n.NoteNumber;
		//current row second cell = n.NoteText;
                
            }

            t.Commit();

I am new to the api and relatively new to programming so an example would help but an explanation of the example would be even better.  I'm trying to learn.