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How to use NumberFormatInfo in the SummaryColumn of the GridTableSummaryRow?

Platform: WPF |
Control: SfDataGrid |
.NET Framework: 4.5

In the SfDataGrid, you can use NumberFormatInfo in the SummaryColumn of the GridTableSummaryRow by deriving a new class from GridTableSummaryCellRenderer and override its OnUpdateEditBinding virtual method. 



By default, summary result is displayed based on the Format specified in SummaryColumn.



public class GridTableSummaryCellRendererExt : GridTableSummaryCellRenderer
        public override void OnUpdateEditBinding(DataColumnBase column, Syncfusion.UI.Xaml.Grid.GridTableSummaryCell element, object dataContext)
            //Check whether the datacontext is SummaryRecordEntry
            var record = dataContext as SummaryRecordEntry;
            if (!(dataContext is SummaryRecordEntry))
            //Process each SummaryColumn and get the display text of corresponding summary
            foreach (ISummaryColumn summaryColumn in record.SummaryRow.SummaryColumns)
                if (!summaryColumn.MappingName.Contains(column.GridColumn.MappingName))
                string summarytext = string.Empty;
                if (record.SummaryRow.ShowSummaryInRow)
                    summarytext = SummaryCreator.GetSummaryDisplayTextForRow(record, this.DataGrid.View);
                    summarytext = SummaryCreator.GetSummaryDisplayText(record, column.GridColumn.MappingName, this.DataGrid.View);
                if (!string.IsNullOrEmpty(summarytext))
                    //Create new number format and apply it to summary columns 
                    NumberFormatInfo format = new NumberFormatInfo();
                    format.NumberDecimalDigits = 3;
                    format.NumberDecimalSeparator = "*";
                    format.NumberGroupSeparator = ",";
                    //Number format is applied to summary columns
                    element.Content = Convert.ToDouble(double.Parse(summarytext, NumberStyles.Currency)).ToString("N", format);

Refer to the following code example to remove the default GridTableSummaryCellRenderer and add the customized GridTableSummaryCellRendererExt to the renderer’s collection in the SfDataGrid.


public MainWindow()
    //Customized GridTableSummaryCellRendererExt is added to the CellRenderers collection
    grid.CellRenderers.Add("TableSummary", new GridTableSummaryCellRendererExt()); 


The above formatting is applied to summary values as follows.

NumberFormatInfo is applied to summary values

Figure 1:NumberFormatInfo is applied to summary values


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