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PagedControl.LoadItems 事件

定義

控制項已自訂分頁且需要更多資料時會發生。 這個 API 已經過時。 如需如何開發 ASP.NET 行動應用程式的資訊,請參閱 具有 ASP.NET 的Mobile Apps & Sites

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 

事件類型

範例

下列範例示範如何使用 ItemsPerPage 屬性來呈現每個頁面 200 個項目清單的八個專案。

<%@ 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>

備註

當控件是自定義編頁時,您不會明確系結控件。 分頁之後,控件會引發這個事件,指出需要哪些部分的數據。 應用程式可以處理此事件,並將控件與必要的數據系結。

適用於

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