Question

我有一个非常简单的场景，使用rad list view进行手动数据操作。我在ItemInserting事件中将一个项目插入到我的集合中，listview显示了新项目，但仍然显示了insertitemtemplate。我的设置错了吗？我必须手动隐藏这个东西吗？

标记

<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Test2.aspx.vb" Inherits="Test2" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <telerik:RadScriptManager runat="server" ID="rsm"></telerik:RadScriptManager>
    <div>
        <telerik:RadListView ID="rlv" runat="server" DataKeyNames="UserID" ItemPlaceholderID="itemPlaceholder" Height="400px" AllowPaging="true">
            <InsertItemTemplate>
                <tr>
                    <td>
                        <div style="vertical-align: middle; white-space: nowrap;">
                            <asp:LinkButton ID="btnInsert2" runat="server" Text="Insert" CommandName='<%# Telerik.Web.UI.RadListView.PerformInsertCommandName %>'></asp:LinkButton>
                            <asp:LinkButton ID="btnCancel2" runat="server" Text="Cancel" CommandName='<%# Telerik.Web.UI.RadListView.CancelCommandName %>'></asp:LinkButton>                           
                        </div>
                    </td>
                    <td>
                        <div style="vertical-align: middle; white-space: nowrap;">
                            <telerik:RadComboBox id="RadComboBox1" runat="server" autopostback="True" causesvalidation="False" allowcustomtext="True" backcolor="White" emptymessage="Select a Person" enableloadondemand="True" showmoreresultsbox="True" width="150px" dropdownwidth="200px" zindex="9002" enablescreenboundarydetection="False" style="margin-bottom: 0px" datatextfield="UserName" datavaluefield="pkUserID" filter="Contains" onitemsrequested="RCB_ItemsRequested">
                                        <CollapseAnimation Duration="200" Type="OutQuint" />
                                    </telerik:RadComboBox>
                        </div>
                    </td>
                </tr>
            </InsertItemTemplate>
            <ItemTemplate>
                <tr>
                    <td>
                        <asp:Literal ID="lName" runat="server" Text='<%# Eval("UserName") %>'></asp:Literal>
                    </td>
                </tr>
            </ItemTemplate>
            <LayoutTemplate>
                <asp:LinkButton ID="btnInsert" runat="server" CausesValidation="False" CommandName='<%# Telerik.Web.UI.RadListView.InitInsertCommandName %>' Text="Add User" />
                <table>
                    <tr>
                        <td style="border: ridge 1px lightgray">
                            <strong>Applicable Users</strong>
                            <table>
                                <asp:PlaceHolder runat="server" ID="itemPlaceholder"></asp:PlaceHolder>
                            </table>
                        </td>
                    </tr>                   
                </table>
            </LayoutTemplate>
        </telerik:RadListView>
    </div>
    </form>
</body>
</html>

背后的代码

Partial Class Test2
    Inherits System.Web.UI.Page

    Public Property Users As IList(Of UserInfo)
        Get
            Return If(ViewState("Users"), New List(Of UserInfo))
        End Get
        Set(ByVal value As IList(Of UserInfo))
            ViewState("Users") = value
        End Set
    End Property

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        If Not Page.IsPostBack Then
            Me.Users = GetInitialUsers()
        End If

        rlv.DataSource = Users
        rlv.DataBind()

        Me.ViewState.SetItemDirty("Users", True)
    End Sub

    Private Function GetInitialUsers() As IList(Of UserInfo)
        Dim Users As New List(Of UserInfo)

        Users.Add(New UserInfo(1, "1"))
        Users.Add(New UserInfo(2, "2"))
        Users.Add(New UserInfo(3, "2"))
        Users.Add(New UserInfo(4, "4"))

        Return Users
    End Function

    Protected Sub RCB_ItemsRequested(ByVal sender As Object, ByVal e As Telerik.Web.UI.RadComboBoxItemsRequestedEventArgs)
        Dim ComboBox As Telerik.Web.UI.RadComboBox = sender

        Dim itemOffset As Integer = e.NumberOfItems
        Dim NumberOfItems As Integer = 1000000000
        Dim Take As Integer = 20

        For i As Integer = 0 To Take
            ComboBox.Items.Add(New Telerik.Web.UI.RadComboBoxItem(i + itemOffset, (i + itemOffset).ToString))
        Next

        Dim NumberOfItemsInComboBox As Integer = e.NumberOfItems + ComboBox.Items.Count

        If NumberOfItems > 0 Then
            e.Message = [String].Format("Items <b>1</b>-<b>{0}</b> out of <b>{1}</b>", NumberOfItemsInComboBox, NumberOfItems)
        Else
            e.Message = "No matches"
        End If

        e.EndOfItems = (NumberOfItemsInComboBox >= NumberOfItems)
    End Sub

    Protected Sub rlv_ItemInserting(ByVal sender As Object, ByVal e As Telerik.Web.UI.RadListViewCommandEventArgs) Handles rlv.ItemInserting
        Dim ComboBox As Telerik.Web.UI.RadComboBox = e.ListViewItem.FindControl("RadComboBox1")

        If Not String.IsNullOrWhiteSpace(ComboBox.SelectedValue) Then
            Dim UserID As Integer = ComboBox.SelectedValue
            Dim UserName As String = ComboBox.Text

            Me.Users.Add(New UserInfo(UserID, UserName))
        Else
            e.Canceled = True
        End If

    End Sub

    <Serializable()>
    Public Class UserInfo
        Private _UserID As Integer
        Private _UserName As String

        Public ReadOnly Property UserID As Integer
            Get
                Return _UserID
            End Get
        End Property

        Public ReadOnly Property UserName As String
            Get
                Return _UserName
            End Get
        End Property

        Public Sub New(ByVal UserID As Integer, ByVal UserName As String)
            _UserID = UserID
            _UserName = UserName
        End Sub

    End Class

End Class

Answer 1

插入新项目后，将InsertItemPosition设置为None：

RadListView1.InsertItemPosition = RadListViewInsertItemPosition.None

Answer 2

radlistview1.IsItemInserted = FALSE;

保存后单击

或设置e.canceled = false

插入后仍显示RadListView insertitemtemplate

2 个答案: