ASPxSpreadsheet.ShowConfirmOnLosingChanges Property

Gets or sets a value that specifies whether a confirmation alert should be displayed when any unsaved changes are going to be lost due to an end-user action.

Namespace: DevExpress.Web.ASPxSpreadsheet

Assembly: DevExpress.Web.ASPxSpreadsheet.v21.2.dll


public bool ShowConfirmOnLosingChanges { get; set; }

Property Value

Type Default Description


true, to display the confirmation alert; otherwise, false.


Use the ShowConfirmOnLosingChanges property to disable/enable a confirmation alert displayed when an end-user tries to perform an action that might force the ASPxSpreadsheet to lose any currently unsaved data. For instance, an end-user can modify data within a worksheet and then click the File - New button. As a result, an alert to confirm losing changes will appear.


The confirmation alert cannot be displayed on iOS devices due to their limitations. Safari for mobile devices does not the provide necessary events that can be used for displaying the confirmation message.


When the ShowConfirmOnLosingChanges property is set to true, the JavaScript code contained within the href link attribute is not executed in Internet Explorer. To learn more, see the Links / “A” tags do not work in IE together with GridView in Batch Edit Mode / SpreadSheet / RichEdit Knowledge Base Article.

See Also