ListViewItemEventArgs 类

定义

提供有关 ItemCreatedItemDataBound 事件的数据。

public ref class ListViewItemEventArgs : EventArgs
public class ListViewItemEventArgs : EventArgs
type ListViewItemEventArgs = class
    inherit EventArgs
Public Class ListViewItemEventArgs
Inherits EventArgs
继承
ListViewItemEventArgs

示例

以下示例演示如何使用 ListViewItemEventArgs 对象访问绑定到数据的项的属性。


<%@ 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">

    // <Snippet2>
    protected void ContactsListView_ItemDataBound(object sender, ListViewItemEventArgs e)
    {
        Label EmailAddressLabel;
        if (e.Item.ItemType == ListViewItemType.DataItem)
        {
            // Display the email address in italics.
            EmailAddressLabel = (Label)e.Item.FindControl("EmailAddressLabel");
            EmailAddressLabel.Font.Italic = true;

            System.Data.DataRowView rowView = e.Item.DataItem as System.Data.DataRowView;
            string currentEmailAddress = rowView["EmailAddress"].ToString();
            if (currentEmailAddress == "orlando0@adventure-works.com")
            {
                EmailAddressLabel.Font.Bold = true;
            }
        }
    }
    // </Snippet2>
  
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <title>ListView ItemDataBound Example</title>
</head>
<body style="font: 10pt Trebuchet MS">
    <form id="form1" runat="server">
    <h3>
        ListView ItemDataBound Example</h3>
    <asp:ListView ID="ContactsListView" DataSourceID="ContactsDataSource" ConvertEmptyStringToNull="true"
        OnItemDataBound="ContactsListView_ItemDataBound" runat="server">
        <LayoutTemplate>
            <table cellpadding="2" width="680px" border="0">
                <tr style="background-color: #ADD8E6" runat="server">
                    <th runat="server">
                        First Name
                    </th>
                    <th runat="server">
                        Last Name
                    </th>
                    <th runat="server">
                        Email Address
                    </th>
                </tr>
                <tr runat="server" id="itemPlaceholder" />
            </table>
            <asp:DataPager runat="server" ID="PeopleDataPager" PageSize="12">
                <Fields>
                    <asp:NumericPagerField ButtonCount="10" />
                </Fields>
            </asp:DataPager>
        </LayoutTemplate>
        <ItemTemplate>
            <tr style="background-color: #CAEEFF" runat="server">
                <td>
                    <asp:Label ID="FirstNameLabel" runat="server" Text='<%#Eval("FirstName") %>' />
                </td>
                <td>
                    <asp:Label ID="LastNameLabel" runat="server" Text='<%#Eval("LastName") %>' />
                </td>
                <td>
                    <asp:Label ID="EmailAddressLabel" runat="server" Text='<%#Eval("EmailAddress") %>' />
                </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:AdventureWorksConnectionString %>"
        SelectCommand="SELECT FirstName, LastName, EmailAddress FROM SalesLT.Customer">
    </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">

    ' <Snippet2>
    Protected Sub ContactsListView_ItemDataBound(ByVal sender As Object, _
                                                 ByVal e As ListViewItemEventArgs)
  
        If e.Item.ItemType = ListViewItemType.DataItem Then
            ' Display the email address in italics.
            Dim EmailAddressLabel As Label = _
              CType(e.Item.FindControl("EmailAddressLabel"), Label)
            EmailAddressLabel.Font.Italic = True

            Dim rowView As System.Data.DataRowView
            rowView = CType(e.Item.DataItem, System.Data.DataRowView)
            Dim currentEmailAddress As String = rowView("EmailAddress").ToString()
            If currentEmailAddress = "orlando0@adventure-works.com" Then
                EmailAddressLabel.Font.Bold = True
            End If
        End If
        
    End Sub
    ' </Snippet2>

</script>

<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <title>ListView ItemDataBound Example</title>
</head>
<body style="font: 10pt Trebuchet MS">
    <form id="form1" runat="server">
    <h3>
        ListView ItemDataBound Example</h3>
    <asp:ListView ID="ContactsListView" DataSourceID="ContactsDataSource" ConvertEmptyStringToNull="true"
        OnItemDataBound="ContactsListView_ItemDataBound" runat="server">
        <layouttemplate>
          <table cellpadding="2" width="680px" border="0">
            <tr style="background-color: #ADD8E6" runat="server">
                <th runat="server">First Name</th>
                <th runat="server">Last Name</th>
                <th runat="server">Email Address</th>
            </tr>
            <tr runat="server" id="itemPlaceholder" />
          </table>
          <asp:DataPager runat="server" ID="PeopleDataPager" PageSize="12">
            <Fields>
              <asp:NumericPagerField ButtonCount="10" /> 
            </Fields>
          </asp:DataPager>
        </layouttemplate>
        <itemtemplate>
          <tr style="background-color: #CAEEFF" runat="server">
            <td>
              <asp:Label ID="FirstNameLabel" runat="server" Text='<%#Eval("FirstName") %>' />
            </td>
            <td>
              <asp:Label ID="LastNameLabel" runat="server" Text='<%#Eval("LastName") %>' />
            </td>
            <td>
              <asp:Label ID="EmailAddressLabel" runat="server" Text='<%#Eval("EmailAddress") %>' />
            </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:AdventureWorksConnectionString %>"
        SelectCommand="SELECT FirstName, LastName, EmailAddress FROM SalesLT.Customer">
    </asp:SqlDataSource>
    </form>
</body>
</html>

注解

ListView必须先为控件中的每个项创建对象,ListViewItem然后才能呈现控件。 ItemCreated每次在控件中创建ListView项时都会引发 该事件。 这使你能够提供一个事件处理方法,该方法在创建项时执行自定义例程,例如向项添加自定义内容。

同样,在呈现控件之前 ListView ,控件中的每个项都必须绑定到数据源中的记录。 ItemDataBound当由对象) 表示ListViewItem的项 (绑定到控件中的数据时,将引发 该ListView事件。 这使你可以在项绑定到数据时执行自定义例程,例如在显示数据之前修改数据的值。

对象 ListViewItemEventArgs 将传递给事件处理方法,该方法使你能够访问引发事件的项的属性。 若要确定要创建 (数据项、空项或插入项) 的项类型,请使用 ItemType 对象的 属性 ListViewItem

有关 实例 ListViewItemEventArgs的初始属性值列表, ListViewItemEventArgs 请参阅 构造函数。

构造函数

ListViewItemEventArgs(ListViewItem)

初始化 ListViewItemEventArgs 类的新实例。

属性

Item

获取创建或绑定到数据的项。

方法

Equals(Object)

确定指定对象是否等于当前对象。

(继承自 Object)
GetHashCode()

作为默认哈希函数。

(继承自 Object)
GetType()

获取当前实例的 Type

(继承自 Object)
MemberwiseClone()

创建当前 Object 的浅表副本。

(继承自 Object)
ToString()

返回表示当前对象的字符串。

(继承自 Object)

适用于

另请参阅