ListViewItemEventArgs 類別

定義

提供 ItemCreatedItemDataBound 事件的資料。Provides data for the ItemCreated and ItemDataBound events.

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

範例

下列範例顯示如何使用 ListViewItemEventArgs 物件來存取系結至資料之專案的屬性。The following example shows how to use the ListViewItemEventArgs object to access the properties of the item that is being bound to data.


<%@ 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>

備註

ListView 呈現控制項之前, ListViewItem 必須為控制項中的每個專案建立物件。Before the ListView control can be rendered, a ListViewItem object must be created for each item in the control. ItemCreated每次建立控制項中的專案時,就會引發事件 ListViewThe ItemCreated event is raised every time that an item in the ListView control is created. 這可讓您提供事件處理方法,以便在每次建立專案時執行自訂常式,例如將自訂內容新增至專案。This enables you to provide an event-handling method that performs a custom routine whenever an item is created, such as adding custom content to an item.

同樣地,在 ListView 呈現控制項之前,控制項中的每個專案都必須系結至資料來源中的記錄。Similarly, before the ListView control can be rendered, every item in the control must be bound to a record in the data source. ItemDataBound當物件所代表的專案 () 系結 ListViewItem 至控制項中的資料時,就會引發事件 ListViewThe ItemDataBound event is raised when an item (represented by a ListViewItem object) is bound to data in the ListView control. 這可讓您在每次專案系結至資料時執行自訂常式,例如,在顯示資料之前修改其值。This enables you to perform a custom routine whenever an item is bound to data, such as modifying the values of the data before they are displayed.

ListViewItemEventArgs物件會傳遞至事件處理方法,可讓您存取引發事件之專案的屬性。A ListViewItemEventArgs object is passed to the event-handling method, which enables you to access the properties of the item that raised the event. 若要判斷正在建立 (資料項目、空的專案或插入專案) 的專案類型,請使用 ItemType 物件的屬性 ListViewItemTo determine which item type (data item, empty item, or insert item) is being created, use the ItemType property of the ListViewItem object.

如需實例的初始屬性值清單 ListViewItemEventArgs ,請參閱 ListViewItemEventArgs 函數。For a list of initial property values for an instance of ListViewItemEventArgs, see the ListViewItemEventArgs constructor.

建構函式

ListViewItemEventArgs(ListViewItem)

初始化 ListViewItemEventArgs 類別的新執行個體。Initializes a new instance of the ListViewItemEventArgs class.

屬性

Item

取得所建立或繫結到資料的項目。Gets the item that is being created or bound to data.

方法

Equals(Object)

判斷指定的物件是否等於目前的物件。Determines whether the specified object is equal to the current object.

(繼承來源 Object)
GetHashCode()

做為預設雜湊函式。Serves as the default hash function.

(繼承來源 Object)
GetType()

取得目前執行個體的 TypeGets the Type of the current instance.

(繼承來源 Object)
MemberwiseClone()

建立目前 Object 的淺層複製。Creates a shallow copy of the current Object.

(繼承來源 Object)
ToString()

傳回代表目前物件的字串。Returns a string that represents the current object.

(繼承來源 Object)

適用於

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