FormView.ItemInserted 事件
定义
重要
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在单击 FormView 控件中的“插入”按钮时，但在插入操作之后发生。
public:
event System::Web::UI::WebControls::FormViewInsertedEventHandler ^ ItemInserted;public event System.Web.UI.WebControls.FormViewInsertedEventHandler ItemInserted;member this.ItemInserted : System.Web.UI.WebControls.FormViewInsertedEventHandler Public Custom Event ItemInserted As FormViewInsertedEventHandler 事件类型
示例
以下示例演示如何使用 ItemInserted 事件来确定在插入操作期间是否发生异常。
<%@ 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 EmployeeFormView_ItemInserted(Object sender, FormViewInsertedEventArgs e)
{
// Use the Exception property to determine whether an exception
// occurred during the insert operation.
if (e.Exception == null)
{
// Use the AffectedRows property to determine whether the
// record was inserted. Sometimes an error might occur that
// does not raise an exception, but prevents the insert
// operation from completing.
if (e.AffectedRows == 1)
{
MessageLabel.Text = "Record inserted successfully.";
}
else
{
MessageLabel.Text = "An error occurred during the insert operation.";
// Use the KeepInInsertMode property to remain in insert mode
// when an error occurs during the insert operation.
e.KeepInInsertMode = true;
}
}
else
{
// Insert the code to handle the exception.
MessageLabel.Text = e.Exception.Message;
// Use the ExceptionHandled property to indicate that the
// exception has already been handled.
e.ExceptionHandled = true;
e.KeepInInsertMode = true;
}
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>FormViewInsertedEventArgs Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>FormViewInsertedEventArgs Example</h3>
<asp:formview id="EmployeeFormView"
datasourceid="EmployeeSource"
allowpaging="true"
datakeynames="EmployeeID"
emptydatatext="No employees found."
oniteminserted="EmployeeFormView_ItemInserted"
runat="server">
<itemtemplate>
<table>
<tr>
<td rowspan="5">
<asp:image id="CompanyLogoImage"
imageurl="~/Images/Logo.jpg"
alternatetext="Company logo"
runat="server"/>
</td>
<td colspan="2">
</td>
</tr>
<tr>
<td>
<b>Name:</b>
</td>
<td>
<%# Eval("FirstName") %> <%# Eval("LastName") %>
</td>
</tr>
<tr>
<td>
<b>Title:</b>
</td>
<td>
<%# Eval("Title") %>
</td>
</tr>
<tr>
<td colspan="2">
<asp:linkbutton id="NewButton"
text="New"
commandname="New"
runat="server"/>
</td>
</tr>
</table>
</itemtemplate>
<insertitemtemplate>
<table>
<tr>
<td rowspan="4">
<asp:image id="CompanyLogoEditImage"
imageurl="~/Images/Logo.jpg"
alternatetext="Company logo"
runat="server"/>
</td>
<td colspan="2">
</td>
</tr>
<tr>
<td>
<b><asp:Label
runat="server"
AssociatedControlID="FirstNameInsertTextBox"
Text="Name" />:</b>
</td>
<td>
<asp:textbox id="FirstNameInsertTextBox"
text='<%# Bind("FirstName") %>'
runat="server"/>
<asp:textbox id="LastNameInsertTextBox"
text='<%# Bind("LastName") %>'
runat="server"/>
</td>
</tr>
<tr>
<td>
<b><asp:Label
runat="server"
AssociatedControlID="TitleInsertTextBox"
Text="Title" />:</b>
</td>
<td>
<asp:textbox id="TitleInsertTextBox"
text='<%# Bind("Title") %>'
runat="server"/>
</td>
</tr>
<tr>
<td colspan="2">
<asp:linkbutton id="InsertButton"
text="Insert"
commandname="Insert"
runat="server"/>
<asp:linkbutton id="CancelButton"
text="Cancel"
commandname="Cancel"
runat="server"/>
</td>
</tr>
</table>
</insertitemtemplate>
</asp:formview>
<br/><br/>
<asp:label id="MessageLabel"
forecolor="Red"
runat="server"/>
<!-- This example uses Microsoft SQL Server and connects -->
<!-- to the Northwind sample database. Use an ASP.NET -->
<!-- expression to retrieve the connection string value -->
<!-- from the Web.config file. -->
<asp:sqldatasource id="EmployeeSource"
selectcommand="Select [EmployeeID], [LastName], [FirstName], [Title], [PhotoPath] From [Employees]"
insertcommand="Insert Into [Employees] ([LastName], [FirstName], [Title]) VALUES (@LastName, @FirstName, @Title)"
connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>"
runat="server"/>
</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 EmployeeFormView_ItemInserted(ByVal sender As Object, ByVal e As FormViewInsertedEventArgs)
' Use the Exception property to determine whether an exception
' occurred during the insert operation.
If e.Exception Is Nothing Then
' Use the AffectedRows property to determine whether the
' record was inserted. Sometimes an error might occur that
' does not raise an exception, but prevents the insert
' operation from completing.
If e.AffectedRows = 1 Then
MessageLabel.Text = "Record inserted successfully."
Else
MessageLabel.Text = "An error occurred during the insert operation."
' Use the KeepInInsertMode property to remain in insert mode
' when an error occurs during the insert operation.
e.KeepInInsertMode = True
End If
Else
' Insert the code to handle the exception.
MessageLabel.Text = e.Exception.Message
' Use the ExceptionHandled property to indicate that the
' exception has already been handled.
e.ExceptionHandled = True
e.KeepInInsertMode = True
End If
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>FormViewInsertedEventArgs Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>FormViewInsertedEventArgs Example</h3>
<asp:formview id="EmployeeFormView"
datasourceid="EmployeeSource"
allowpaging="true"
datakeynames="EmployeeID"
emptydatatext="No employees found."
oniteminserted="EmployeeFormView_ItemInserted"
runat="server">
<itemtemplate>
<table>
<tr>
<td rowspan="5">
<asp:image id="CompanyLogoImage"
imageurl="~/Images/Logo.jpg"
alternatetext="Company logo"
runat="server"/>
</td>
<td colspan="2">
</td>
</tr>
<tr>
<td>
<b>Name:</b>
</td>
<td>
<%# Eval("FirstName") %> <%# Eval("LastName") %>
</td>
</tr>
<tr>
<td>
<b>Title:</b>
</td>
<td>
<%# Eval("Title") %>
</td>
</tr>
<tr>
<td colspan="2">
<asp:linkbutton id="NewButton"
text="New"
commandname="New"
runat="server"/>
</td>
</tr>
</table>
</itemtemplate>
<insertitemtemplate>
<table>
<tr>
<td rowspan="4">
<asp:image id="CompanyLogoEditImage"
imageurl="~/Images/Logo.jpg"
alternatetext="Company logo"
runat="server"/>
</td>
<td colspan="2">
</td>
</tr>
<tr>
<td>
<b><asp:Label
runat="server"
AssociatedControlID="FirstNameInsertTextBox"
Text="Name" />:</b>
</td>
<td>
<asp:textbox id="FirstNameInsertTextBox"
text='<%# Bind("FirstName") %>'
runat="server"/>
<asp:textbox id="LastNameInsertTextBox"
text='<%# Bind("LastName") %>'
runat="server"/>
</td>
</tr>
<tr>
<td>
<b><asp:Label
runat="server"
AssociatedControlID="TitleInsertTextBox"
Text="Title" />:</b>
</td>
<td>
<asp:textbox id="TitleInsertTextBox"
text='<%# Bind("Title") %>'
runat="server"/>
</td>
</tr>
<tr>
<td colspan="2">
<asp:linkbutton id="InsertButton"
text="Insert"
commandname="Insert"
runat="server"/>
<asp:linkbutton id="CancelButton"
text="Cancel"
commandname="Cancel"
runat="server"/>
</td>
</tr>
</table>
</insertitemtemplate>
</asp:formview>
<br/><br/>
<asp:label id="MessageLabel"
forecolor="Red"
runat="server"/>
<!-- This example uses Microsoft SQL Server and connects -->
<!-- to the Northwind sample database. Use an ASP.NET -->
<!-- expression to retrieve the connection string value -->
<!-- from the Web.config file. -->
<asp:sqldatasource id="EmployeeSource"
selectcommand="Select [EmployeeID], [LastName], [FirstName], [Title], [PhotoPath] From [Employees]"
insertcommand="Insert Into [Employees] ([LastName], [FirstName], [Title]) VALUES (@LastName, @FirstName, @Title)"
connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>"
runat="server"/>
</form>
</body>
</html>
注解
FormView当“插入”按钮 (按钮的CommandName属性设置为“Insert”时，控件将引发 ItemInserted 该事件) 在控件内单击，但在控件插入记录之后FormView。 这允许你提供一个事件处理方法，该方法在发生此事件时执行自定义例程，例如检查插入操作的结果。
对象 FormViewInsertedEventArgs 将传递给事件处理方法，这样就可以确定受影响的记录数以及可能发生的任何异常。 若要确定受插入操作影响的记录数，请使用 AffectedRows 属性。 Exception使用 属性确定是否发生任何异常。 还可以通过设置 ExceptionHandled 属性来指示是否在事件处理方法中处理了异常。 如果需要访问插入的记录的值，请使用 Values 属性。
默认情况下，控件在 FormView 插入操作后返回到 由 属性指定的 DefaultMode 模式。 若要使 FormView 控件保持插入模式，请将 KeepInInsertMode 属性设置为 true。
有关如何处理事件的详细信息，请参阅 处理和引发事件。
