protected override NWidget CreateExampleContent()
{
// create a view and get its grid
NTableGridView view = new NTableGridView();
NTableGrid grid = view.Grid;
// customize the grid
grid.AllowEdit = false;
// bind to data source, but exclude the "PersonId" field from binding
grid.AutoCreateColumn += delegate(NAutoCreateColumnEventArgs arg)
{
if (arg.FieldInfo.Name == "PersonId")
{
arg.DataColumn = null;
}
};
grid.DataSource = NDummyDataSource.CreatePersonsOrdersDataSource();
// create a calculated Total column
NCustomCalculatedColumn <double> totalColumn = new NCustomCalculatedColumn <double>();
totalColumn.Title = "Total";
totalColumn.GetRowValueDelegate = delegate(NCustomCalculatedColumnGetRowValueArgs <double> args)
{
double price = Convert.ToDouble(args.DataSource.GetValue(args.RowIndex, "Price"));
int quantity = Convert.ToInt32(args.DataSource.GetValue(args.RowIndex, "Quantity"));
return((double)(price * quantity));
};
grid.Columns.Add(totalColumn);
// create a grouping rule that groups by the Product Name column
NGroupingRule groupingRule = new NGroupingRule(grid.Columns.GetColumnByFieldName("Product Name"));
// create a footer summary row for the total total
groupingRule.CreateFooterSummaryRowsDelegate = delegate(NGroupingRuleCreateSummaryRowsArgs args)
{
// get the recordset for the group
NRecordset recordset = args.GroupRow.Recordset;
// calculate the sum of totals
double total = 0;
for (int i = 0; i < recordset.Count; i++)
{
total += Convert.ToDouble(totalColumn.GetRowValue(recordset[i]));
}
// create the total summary row
NSummaryRow totalRow = new NSummaryRow();
totalRow.Cells = new NSummaryCellCollection();
NSummaryCell cell = new NSummaryCell();
cell.BeginXPosition.Mode = ENSpanCellBeginXPositionMode.AnchorToEndX;
cell.EndXPosition.Mode = ENSpanCellEndXPositionMode.RowEndX;
cell.Content = new NLabel("Grand Total: " + total.ToString("0.00"));
totalRow.Cells.Add(cell);
return(new NSummaryRow[] { totalRow });
};
grid.GroupingRules.Add(groupingRule);
return(view);
}
