ListViewDeletedEventArgs.ExceptionHandled Property
Gets or sets a value that indicates whether an exception that was raised during the delete operation was handled in the event handler.
Namespace: System.Web.UI.WebControls
Assembly: System.Web.Extensions (in System.Web.Extensions.dll)
Property Value
Type: System.Booleantrue if the exception was handled in the event handler; otherwise, false. The default value is false.
When an exception is raised during the delete operation, use the ExceptionHandled property to indicate whether you handled the exception during the event. If this property is set to true, the exception is considered handled and is not re-thrown. If this property is set to false, the ListView control re-throws the exception. To determine which exception was raised, use the Exception property.
The following example shows how to use the ExceptionHandled property to indicate that the exception was handled in the event handler.
<%@ Page language="C#" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <script runat="server"> void Page_Load() { Message.Text = String.Empty; } void ContactsListView_ItemDeleted(Object sender, ListViewDeletedEventArgs e) { // Determine whether an exception occurred during the delete operation. if (e.Exception == null) { // Ensure that a record was deleted. if (e.AffectedRows > 0) { Message.Text = e.AffectedRows + " item(s) deleted successfully."; } else { Message.Text = "No item was deleted."; } } else { // Insert the code to handle the exception here. // Indicate that the exception has been handled. e.ExceptionHandled = true; Message.Text = "An error occurred during the delete operation."; } } </script> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server"> <title>ListViewDeletedEventArgs Example</title> </head> <body> <form id="form1" runat="server"> <h3>ListViewDeletedEventArgs Example</h3> <asp:Label ID="Message" ForeColor="Red" runat="server"/> <br/> <asp:ListView ID="ContactsListView" DataSourceID="ContactsDataSource" DataKeyNames="ContactID" OnItemDeleted="ContactsListView_ItemDeleted" runat="server"> <LayoutTemplate> <table cellpadding="2" runat="server" id="tblContacts" width="640px"> <tr runat="server" id="itemPlaceholder" /> </table> <asp:DataPager runat="server" ID="PeopleDataPager" PageSize="12"> <Fields> <asp:NextPreviousPagerField ShowFirstPageButton="true" ShowLastPageButton="true" FirstPageText="|<< " LastPageText=" >>|" NextPageText=" > " PreviousPageText=" < " /> </Fields> </asp:DataPager> </LayoutTemplate> <ItemTemplate> <tr runat="server"> <td valign="top"> <asp:Label ID="FirstNameLabel" runat="server" Text='<%#Eval("FirstName") %>' /> <asp:Label ID="LastNameLabel" runat="server" Text='<%#Eval("LastName") %>' /> </td> <td> <asp:Label ID="EmailLabel" runat="server" Text='<%#Eval("EmailAddress") %>' /> </td> <td> <asp:LinkButton ID="DeleteButton" runat="server" CommandName="Delete" Text="Delete" OnClientClick="return confirm('Are you sure?');" /> </td> </tr> </ItemTemplate> </asp:ListView> <!-- This example uses Microsoft SQL Server and connects --> <!-- to the AdventureWorks sample database. Use an ASP.NET --> <!-- expression to retrieve the connection string value --> <!-- from the Web.config file. --> <asp:SqlDataSource ID="ContactsDataSource" runat="server" ConnectionString="<%$ ConnectionStrings:AdventureWorks_DataConnectionString %>" SelectCommand="SELECT [ContactID], [FirstName], [LastName], [EmailAddress] FROM Person.Contact" DeleteCommand="DELETE FROM Person.Contact WHERE [ContactID] = @ContactID"> <DeleteParameters> <asp:Parameter Name="ContactID" Type="Int32" /> </DeleteParameters> </asp:SqlDataSource> </form> </body> </html>
Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
