PagedControl.LoadItems 事件

  • 参考

定义

命名空间:
System.Web.UI.MobileControls
程序集:
System.Web.Mobile.dll

在控件自定义分页且需要更多数据时发生。 此 API 已废弃不用。 有关如何开发 ASP.NET 移动应用程序的信息，请参阅 移动应用 & 具有 ASP.NET 的网站。

public:
 event System::Web::UI::MobileControls::LoadItemsEventHandler ^ LoadItems;
public event System.Web.UI.MobileControls.LoadItemsEventHandler LoadItems;
member this.LoadItems : System.Web.UI.MobileControls.LoadItemsEventHandler 
Public Custom Event LoadItems As LoadItemsEventHandler

事件类型

LoadItemsEventHandler

示例

以下示例演示如何使用 ItemsPerPage 属性呈现每页 200 个项目列表的 8 个项目。

<%@ Page Language="C#" 
    Inherits="System.Web.UI.MobileControls.MobilePage" %>
<%@ Register TagPrefix="mobile" 
    Namespace="System.Web.UI.MobileControls" 
    Assembly="System.Web.Mobile" %>

<script runat="server">
    // Called by the List whenever it needs new items
    private void LoadNow(object sender, LoadItemsEventArgs e)
    {
        int j = e.ItemIndex;
        int estItemSize = 110;

        // Get the optimum page weight for the device
        int wt = Form1.Adapter.Page.Adapter.OptimumPageWeight;
        // Get the number of items per page
        List1.ItemsPerPage = wt / estItemSize;
 
        // Clear the current items
        List1.Items.Clear();

        // Build a section of the array
        ArrayList arr= new ArrayList();
        for (int i = 1; i <= e.ItemCount; i++)
        {
            int v = i + j;
            arr.Add((v.ToString() + " List Item"));
        }

        // Assign the array to the list
        List1.DataSource = arr;
        List1.DataBind();
    }
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<body>
    <mobile:Form id="Form1" runat="server" Paginate="true">
        <mobile:List id="List1" runat="server" 
            ItemCount="200" onLoadItems="LoadNow" />
    </mobile:Form>
</body>
</html>

<%@ Page Language="VB" 
    Inherits="System.Web.UI.MobileControls.MobilePage" %>
<%@ Register TagPrefix="mobile" 
    Namespace="System.Web.UI.MobileControls" 
    Assembly="System.Web.Mobile" %>

<script runat="server">
    ' Called by the List whenever it needs new items
    Private Sub LoadNow(ByVal sender As Object, _
        ByVal e As LoadItemsEventArgs)
        
        Dim i, j As Integer
        i = 0
        j = e.ItemIndex
        Dim estItemSize As Integer = 110

        ' Get the optimum page weight for the device
        Dim wt As Integer = _
            form1.Adapter.Page.Adapter.OptimumPageWeight
        ' Get the number of items per page
        List1.ItemsPerPage = wt / estItemSize

        ' Clear the current items
        List1.Items.Clear()
        
        ' Build a section of the array
        Dim arr As New ArrayList()
        For i = 1 To e.ItemCount
            arr.Add(j + i)
        Next
        
        ' Assign the array to the list
        List1.DataSource = arr
        List1.DataBind()
    End Sub

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<body>
    <mobile:form id="form1" runat="server" Paginate="true">
        <mobile:List id="List1" runat="server" 
            ItemCount="200" onLoadItems="LoadNow" 
            ItemsPerPage="8" />
    </mobile:form>
</body>
</html>

注解

控件自定义分页时，不会显式绑定控件。 分页后，控件将引发此事件，指示需要数据的哪一部分。 应用程序可以处理此事件，并将控件与所需的数据绑定。

适用于

另请参阅