ListViewDeletedEventArgs.Exception Property
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Gets the exception, if any, that was raised during the delete operation.
public:
property Exception ^ Exception { Exception ^ get(); };public Exception Exception { get; }member this.Exception : ExceptionPublic ReadOnly Property Exception As ExceptionProperty Value
The exception that was raised during the delete operation, if any; otherwise, null.
Examples
The following example shows how to use the Exception property to determine whether an exception occurred during a delete operation.
<%@ 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>
<%@ Page language="VB" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
Sub Page_Load()
Message.Text = String.Empty
End Sub
Sub ContactsListView_ItemDeleted(sender As Object, e As ListViewDeletedEventArgs)
' Determine whether an exception occurred during the delete operation.
If e.Exception Is Nothing Then
' Ensure that a record was deleted.
If e.AffectedRows > 0 Then
Message.Text = e.AffectedRows.ToString() & _
" item(s) deleted successfully."
Else
Message.Text = "No item was deleted."
End If
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."
End If
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" 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>
Remarks
Use the Exception property to get the exception that was raised during the delete operation, if any. If no exceptions were raised, this property returns null.
Note
If an exception was raised and you handle the exception in the event handler, set the ExceptionHandled property to true. Otherwise, the ListView control re-throws the exception.
Applies to
See also
Collaborate with us on GitHub
The source for this content can be found on GitHub, where you can also create and review issues and pull requests. For more information, see our contributor guide.
