Bulk Operations - Adding multiple rows to sheet - smartsheet-api

Question

I'm attempting to write data from a data table to a sheet via the smartsheet API (using c# SDK). I have looked at the documentation and I see that it supports bulk operations but I'm struggling with finding an example for that functionality.
I've attempted to do a work around and just loop through each record from my source and post that data.
//Get column properties (column Id ) for existing smartsheet and add them to List for AddRows parameter
//Compare to existing Column names in Data table for capture of related column id
var columnArray = getSheet.Columns;
foreach (var column in columnArray)
{
foreach (DataColumn columnPdiExtract in pdiExtractDataTable.Columns)
{
//Console.WriteLine(columnPdiExtract.ColumnName);
if(column.Title == columnPdiExtract.ColumnName)
{
long columnIdValue = column.Id ?? 0;
//addColumnArrayIdList.Add(columnIdValue);
addColumnArrayIdList.Add(new KeyValuePair<string, long>(column.Title,columnIdValue));
}
}
}
foreach(var columnTitleIdPair in addColumnArrayIdList)
{
Console.WriteLine(columnTitleIdPair.Key);
var results = from row in pdiExtractDataTable.AsEnumerable() select row.Field<Double?>(columnTitleIdPair.Key);
foreach (var record in results)
{
Cell[] cells = new Cell[]
{
new Cell
{
ColumnId = columnTitleIdPair.Value,
Value = record
}
};
cellRecords = cells.ToList();
cellRecordsInsert.Add(cellRecords);
}
Row rows = new Row
{
ToTop = true,
Cells = cellRecords
};
IList<Row> newRows = smartsheet.SheetResources.RowResources.AddRows(sheetId, new Row[] { rows });
}
I expected to generate a value for each cell, append that to the list and then post it through the Row Object. However, my loop is appending the column values as such: A1: 1, B2: 2, C3: 3 instead of A1: 1, B1: 2, C3: 3
The preference would be to use bulk operations, but without an example I'm a bit at a loss. However, the loop isn't working out either so if anyone has any suggestions I would be very grateful!
Thank you,
Channing

Answer 1

Have you seen the Smartsheet C# sample read / write sheet? That may be a useful reference. It contains an example use of bulk operations that updates multiple rows with a single call.

Answer 2

Taylor,
Thank you for your help. You lead me in the right direction and I figured my way through a solution.
I grouped by my column value list and built records for the final bulk operation. I used a For loop but the elements in each grouping of columns is cleaned and assigned a 0 prior to this method so that they retain the same count of values per grouping.
// Pair column and cell values for row building - match
// Data source column title names with Smartsheet column title names
List<Cell> pairedColumnCells = new List<Cell>();
//Accumulate cells
List<Cell> cellsToImport = new List<Cell>();
//Accumulate rows for additions here
List<Row> rowsToInsert = new List<Row>();
var groupByCells = PairDataSourceAndSmartsheetColumnToGenerateCells(
sheet,
dataSourceDataTable).GroupBy(
c => c.ColumnId,
c => c.Value,
(key, g) => new {
ColumnId = key, Value = g.ToList<object>()
});
var countGroupOfCells = groupByCells.FirstOrDefault().Value.Count();
for (int i = 0; i <= countGroupOfCells - 1; i++)
{
foreach (var groupOfCells in groupByCells)
{
var cellListEelement = groupOfCells.Value.ElementAt(i);
var cellToAdd = new Cell
{
ColumnId = groupOfCells.ColumnId,
Value = cellListEelement
};
cellsToImport.Add(cellToAdd);
}
Row rows = new Row
{
ToTop = true,
Cells = cellsToImport
};
rowsToInsert.Add(rows);
cellsToImport = new List<Cell>();
}
return rowsToInsert;