xamarin devexpress customunboundcolumndata

Protected void TreeList_CustomUnboundColumnData(object sender, TreeListCustomUnboundColumnDataEventArgs e)ĭecimal unitPrice = Convert.ToDecimal(e.Node.GetValue('UnitPrice')) ĭecimal quantity = Convert.ToDecimal(e.Node.GetValue('Quantity')) ĭecimal discount = Convert.ToDecimal(e.Node.GetValue('Discount')) Į. This example shows how to add an unbound column to the ASPxTreList control to represent the total sum of an order. To learn how this can be done, please refer to the Unbound Columns Overview topic. There is no field that represents the total sum, as this can be calculated manually as follows: UnitPrice*Quantity*(1-Discount). 1 Answer Sorted by: 2 The CustomUnboundColumnData event is only triggered if there is a column in the ASPxGridView which is designed as an Unbound Column. ExampleĪssume that ASPxTreeList is bound to an “Order Details” data table (NWind data base), which contains “UnitPrice”, “Quantity” and “Discount” fields. The CustomUnboundColumnData event argument provides the TreeListNode.GetValue method, allowing you to get the value of the required cell. The currently processed cell is identified by the column and node, which can be determined via the TreeListCustomUnboundColumnDataEventArgs.Column and TreeListNodeEventArgs.Node properties, respectively. When the ASPxTreeList is loaded, it raises the CustomUnboundColumnData event for each data cell in unbound columns, allowing you to populate cells with data. This column’s TreeListDataColumn.FieldName property value must be unique and it must not refer to any field in the ASPxTreeList’s underlying data source. To create an unbound column, add a new data column to the ASPxTreeList.Columns collection and set its TreeListDataColumn.UnboundType property to an appropriate value, based on the type of data the column is supposed to display. The CustomUnboundColumnData event is fired for unbound columns only. Gets the edit value of the cell currently being processed. The following properties provide information specific to this event: These columns are not bound to any field in the underlying data source. The following properties provide information specific to this event: Remarks DataGridView allows you to create unbound (calculated) columns.

The CustomUnboundColumnData event's data class is TreeListCustomUnboundColumnDataEventArgs. The CustomUnboundColumnData events data class is GridColumnDataEventArgs.

Xamarin devexpress customunboundcolumndata