ListViewItemType Wyliczenie

Definicja

Określa funkcję elementu w ListView kontrolce.Specifies the function of an item in the ListView control.

public enum class ListViewItemType
public enum ListViewItemType
type ListViewItemType = 
Public Enum ListViewItemType
Dziedziczenie
ListViewItemType

Pola

DataItem 0

Element danych w ListView kontrolce.A data item in the ListView control.

EmptyItem 2

Pusty element w ListView kontrolce.An empty item in the ListView control. Pusty element jest wyświetlany ListView , gdy kontrolka nie ma żadnych rekordów do wyświetlenia, lub gdy grupa w ListView formancie nie ma więcej rekordów do wyświetlenia.The empty item is displayed when the ListView control has no records to display, or when a group in the ListView control has no more records to display.

InsertItem 1

Wstaw element w ListView kontrolce.An insert item in the ListView control.

Przykłady

Poniższy przykład pokazuje, jak używać ListViewItemType wyliczenia do sprawdzania typu ListViewItem obiektu.The following example shows how to use the ListViewItemType enumeration to check the type of a ListViewItem object.


<%@ 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>

Uwagi

ListViewItemTypeWyliczenie identyfikuje funkcję elementów w ListView kontrolce.The ListViewItemType enumeration identifies the function of items in a ListView control. Można użyć wyliczenia, ListViewItemType Aby zidentyfikować typ ListViewItem obiektu.You can use the ListViewItemType enumeration to identify the type of a ListViewItem object.

Dotyczy

Zobacz też