C#
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 | using DevExpress.XtraGrid.Views.Base; using DevExpress.XtraGrid.Columns; private void Form1_Load( object sender, System.EventArgs e) { // ... gridControl1.ForceInitialize(); // Create an unbound column. GridColumn unbColumn = gridView1.Columns.AddField( "Total" ); unbColumn.VisibleIndex = gridView1.Columns.Count; unbColumn.UnboundType = DevExpress.Data.UnboundColumnType.Decimal; // Disable editing. unbColumn.OptionsColumn.AllowEdit = false ; // Specify format settings. unbColumn.DisplayFormat.FormatType = DevExpress.Utils.FormatType.Numeric; unbColumn.DisplayFormat.FormatString = "c" ; // Customize the appearance settings. unbColumn.AppearanceCell.BackColor = Color.LemonChiffon; } // Returns the total amount for a specific row. decimal getTotalValue( int listSourceRowIndex) { DataRow row = nwindDataSet.Tables[ "Order Details" ].Rows[listSourceRowIndex]; decimal unitPrice = Convert.ToDecimal(row[ "UnitPrice" ]); decimal quantity = Convert.ToDecimal(row[ "Quantity" ]); decimal discount = Convert.ToDecimal(row[ "Discount" ]); return unitPrice * quantity * (1 - discount); } // Provides data for the Total column. private void gridView1_CustomUnboundColumnData( object sender, CustomColumnDataEventArgs e) { if (e.Column.FieldName == "Total" && e.IsGetData) e.Value = getTotalValue(e.ListSourceRowIndex); } |
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