# Understanding the Effect of Mode on Events

This topic describes the various effects of mode on events. Learn more in documentation.

## Content

The setting of the [EnableClientScript](/spreadnet/api/latest/online-asp/FarPoint.Web.Spread/FarPoint.Web.Spread.FpSpread.EnableClientScript.html) property affects many aspects of the FpSpread component, including its appearance and what events occur, depending on the operation mode.
Events that are not listed in the following table are not affected by the operation mode.
The events that occur for the FpSpread class are affected by the [EnableClientScript](/spreadnet/api/latest/online-asp/FarPoint.Web.Spread/FarPoint.Web.Spread.FpSpread.EnableClientScript.html) setting and the SheetView class [OperationMode](/spreadnet/api/latest/online-asp/FarPoint.Web.Spread/FarPoint.Web.Spread.SheetView.OperationMode.html) property as listed in the following table.

| **Event** | **Normal** | **ReadOnly** | **RowMode** | **SingleSelect** |
| ----- | ------ | -------- | ------- | ------------ |
| [ActiveRowChanged](/spreadnet/api/latest/online-asp/FarPoint.Web.Spread/FarPoint.Web.Spread.FpSpread.ActiveRowChanged.html) | Occurs if EnableClient-Script is false | Does not occur | Occurs if EnableClient-Script is false | Occurs if EnableClient-Script is false |
| [ActiveSheetChanged](/spreadnet/api/latest/online-asp/FarPoint.Web.Spread/FarPoint.Web.Spread.FpSpread.ActiveSheetChanged.html) | Occurs | Occurs | Occurs | Occurs |
| [ButtonCommand](/spreadnet/api/latest/online-asp/FarPoint.Web.Spread/FarPoint.Web.Spread.FpSpread.ButtonCommand.html) | Occurs | Occurs | Occurs | Occurs |
| [CancelCommand](/spreadnet/api/latest/online-asp/FarPoint.Web.Spread/FarPoint.Web.Spread.FpSpread.CancelCommand.html) | Occurs | Does not occur | Occurs | Does not occur |
| [CellClick](/spreadnet/api/latest/online-asp/FarPoint.Web.Spread/FarPoint.Web.Spread.FpSpread.CellClick.html) | Occurs if AutoPostBack is true | Occurs if AutoPostBack is true | Occurs if AutoPostBack is true | Occurs if AutoPostBack is true |
| [ChildViewCreated](/spreadnet/api/latest/online-asp/FarPoint.Web.Spread/FarPoint.Web.Spread.FpSpread.ChildViewCreated.html) | Occurs | Occurs | Occurs | Occurs |
| [ColumnHeaderClick](/spreadnet/api/latest/online-asp/FarPoint.Web.Spread/FarPoint.Web.Spread.FpSpread.ColumnHeaderClick.html) | Occurs if AutoPostBack is true | Occurs if AutoPostBack is true | Occurs if AutoPostBack is true | Occurs if AutoPostBack is true |
| [CreateButton](/spreadnet/api/latest/online-asp/FarPoint.Web.Spread/FarPoint.Web.Spread.FpSpread.CreateButton.html) | Occurs | Occurs | Occurs | Occurs |
| [DeleteCommand](/spreadnet/api/latest/online-asp/FarPoint.Web.Spread/FarPoint.Web.Spread.FpSpread.DeleteCommand.html) (AllowDelete set to true) | Occurs | Does not occur | Occurs | Does not occur |
| [EditCommand](/spreadnet/api/latest/online-asp/FarPoint.Web.Spread/FarPoint.Web.Spread.FpSpread.EditCommand.html) | Occurs if EnableClient-Script is false | Does not occur | Occurs if EnableClient-Script is false | Does not occur |
| [ErrorCommand](/spreadnet/api/latest/online-asp/FarPoint.Web.Spread/FarPoint.Web.Spread.FpSpread.ErrorCommand.html) | Occurs if EnableClient-Script is false | Does not occur | Occurs if EnableClient-Script is false | Does not occur |
| [InsertCommand](/spreadnet/api/latest/online-asp/FarPoint.Web.Spread/FarPoint.Web.Spread.FpSpread.InsertCommand.html) (AllowInsert set to true) | Occurs | Does not occur | Occurs | Does not occur |
| [RowHeaderClick](/spreadnet/api/latest/online-asp/FarPoint.Web.Spread/FarPoint.Web.Spread.FpSpread.RowHeaderClick.html) | Occurs if AutoPostBack is true | Occurs if AutoPostBack is true | Occurs if AutoPostBack is true | Occurs if AutoPostBack is true |
| [SaveOrLoadSheetState](/spreadnet/api/latest/online-asp/FarPoint.Web.Spread/FarPoint.Web.Spread.FpSpread.SaveOrLoadSheetState.html) | Occurs | Occurs | Occurs | Occurs |
| [SortColumnCommand](/spreadnet/api/latest/online-asp/FarPoint.Web.Spread/FarPoint.Web.Spread.FpSpread.SortColumnCommand.html) (AllowSort set to true) | Occurs | Occurs | Occurs | Occurs |
| [TopRowChanged](/spreadnet/api/latest/online-asp/FarPoint.Web.Spread/FarPoint.Web.Spread.FpSpread.TopRowChanged.html) (does not occur if scroll bar is used to change the top row) | Occurs | Occurs | Occurs | Occurs |
| [UpdateCommand](/spreadnet/api/latest/online-asp/FarPoint.Web.Spread/FarPoint.Web.Spread.FpSpread.UpdateCommand.html) | Occurs | Does not occur | Occurs | Does not occur |