我有一个RadListView,还有一个绑定到lstGameWaypoints_ItemCommand的事件处理程序,如下所示。在网格的第一次显示上单击删除按钮成功触发回发并触发ItemCommand。
回发完成后,似乎事件处理程序没有再次连接,单击删除按钮不会发生任何操作。
之前有没有人见过类似的问题?
<telerik:RadListView runat="server" ID="RadListView1"
DataSourceID="ObjectDataSource1" AllowPaging="true"
OnDataBound="lstGameWaypoints_DataBound"
OnItemCreated="lstGameWaypoints_ItemCreated"
OnItemCommand="lstGameWaypoints_ItemCommand">
<EmptyDataTemplate>
<div style="width: 100px;margin: 10px auto auto auto;"><button class="AddWaypoint">Add Waypoint</button></div>
</EmptyDataTemplate>
<ItemTemplate>
<td>
<table style="border:1px solid black;width: 232px;height: 70px;margin:auto;">
<tr>
<td>
Time:
</td>
<td>
<%# string.Format("{0:h:mm tt}", Eval("DateTime")) %>
</td>
</tr>
<tr>
<td>
Date:
</td>
<td>
<%# string.Format("{0:d}", Eval("DateTime")) %>
</td>
</tr>
<tr>
<td>
Chip Stack:
</td>
<td>
<%# string.Format("{0:C}", Eval("ChipStack")) %>
</td>
</tr>
<tr>
<td>
Notes:
</td>
<td>
<%# Eval("Notes") %>
</td>
</tr>
<tr>
<td colspan="2" style="text-align:right;">
<asp:Button runat="server" ID="btnDelete" CssClass="deleteButton" CommandArgument='<%# Eval("WaypointID") %>' CommandName="Delete" Text="X" OnClientClick="return confirm('Are you sure you want to delete this waypoint?');" />
</td>
</tr>
</table>
</td>
</ItemTemplate>
</telerik:RadListView>
protected void lstGameWaypoints_ItemCommand(object sender, Telerik.Web.UI.RadListViewCommandEventArgs e)
{
if (e.CommandName == "Delete")
{
//Do stuff
}
}
更新:
这似乎是我用来承载此控件的面板的RadAjaxManager的问题。如果我在面板上禁用ajax,一切都按预期工作。
这是一个完整的代码......
<telerik:RadAjaxManager ID="RadAjaxManager1" runat="server">
<AjaxSettings>
<telerik:AjaxSetting AjaxControlID="panGameWaypoints">
<UpdatedControls>
<telerik:AjaxUpdatedControl ControlID="panGameWaypoints" LoadingPanelID="RadAjaxLoadingPanel1" />
</UpdatedControls>
</telerik:AjaxSetting>
<telerik:AjaxSetting AjaxControlID="panGameDetails">
<UpdatedControls>
<telerik:AjaxUpdatedControl ControlID="panGameDetails" LoadingPanelID="RadAjaxLoadingPanel1" />
</UpdatedControls>
</telerik:AjaxSetting>
</AjaxSettings>
<ClientEvents OnRequestStart="RequestStart" OnResponseEnd="RequestEnd" />
</telerik:RadAjaxManager>
<telerik:RadAjaxLoadingPanel ID="RadAjaxLoadingPanel1" runat="server" Transparency="60">
<div class="loading">
<asp:Image ID="Image1" runat="server" ImageUrl="~/Images/loading3.gif" AlternateText="loading" />
</div>
</telerik:RadAjaxLoadingPanel>
<asp:Panel runat="server" ID="panGameWaypoints" CssClass="GameWaypoints">
<table style="width:900px;margin:auto;">
<tr>
<telerik:RadListView runat="server" ID="lstGameWaypoints" AllowPaging="false"
OnDataBound="lstGameWaypoints_DataBound"
OnItemCreated="lstGameWaypoints_ItemCreated"
OnNeedDataSource="lstGameWaypoints_NeedDataSource">
<EmptyDataTemplate>
<div style="width: 100px;margin: 10px auto auto auto;"><button class="AddWaypoint">Add Waypoint</button></div>
</EmptyDataTemplate>
<ItemTemplate>
<td>
<table style="border:1px solid black;width: 232px;height: 70px;margin:auto;">
<tr>
<td>
Time:
</td>
<td>
<%# string.Format("{0:h:mm tt}", Eval("DateTime")) %>
</td>
</tr>
<tr>
<td>
Date:
</td>
<td>
<%# string.Format("{0:d}", Eval("DateTime")) %>
</td>
</tr>
<tr>
<td>
Chip Stack:
</td>
<td>
<%# string.Format("{0:C}", Eval("ChipStack")) %>
</td>
</tr>
<tr>
<td>
Notes:
</td>
<td>
<%# Eval("Notes") %>
</td>
</tr>
<tr>
<td colspan="2" style="text-align:right;">
<asp:Button runat="server" ID="btnDelete" CssClass="deleteButton" CommandArgument='<%# Eval("WaypointID") %>' CommandName="Delete" Text="X" OnClientClick="return confirm('Are you sure you want to delete this waypoint?');" />
</td>
</tr>
</table>
</td>
</ItemTemplate>
</telerik:RadListView>
</tr>
</table>
</asp:Panel>
答案 0 :(得分:1)
我创建了一个小测试用例(包含在下面)以确定我是否可以重现您的问题,并且您的实现和我的实现之间存在三个主要差异:
RadAjaxLoadingPanel
ClientEvents
(即RequestStart
,RequestEnd
)OnClientClick
确认对话框解决方案#1
在完成并将其中的每一个添加到我的测试用例后,我发现使用RadAjaxManager
的确认对话框时出现问题。一些研究提供了以下解决方案:
将您的OnClientClick
代码更改为以下内容:
OnClientClick="if(!confirm('Are you sure you want delete this?')) return false;"
这会解决您的问题吗?
以下是有关该问题的一些文件:
www.telerik.com/help/aspnet-ajax/ajax-confirmation.html
以上内容应该可以解决您的问题,但如果没有尝试暂时删除RequestStart
和RequestEnd
客户端事件,请继续删除“附加内容”,直到找到问题为止。
这是一个按预期工作的测试用例:
ASPX:
<telerik:RadAjaxManager ID="rda" runat="server">
<AjaxSettings>
<telerik:AjaxSetting AjaxControlID="pnlTest">
<UpdatedControls>
<telerik:AjaxUpdatedControl ControlID="pnlTest" />
</UpdatedControls>
</telerik:AjaxSetting>
</AjaxSettings>
</telerik:RadAjaxManager>
<asp:Panel ID="pnlTest" runat="server">
<telerik:RadListView ID="lst" runat="server" OnItemCommand="lst_Command" OnNeedDataSource="lst_NeedDataSource">
<ItemTemplate>
<%#Eval("Test")%>
<asp:Button ID="btnDelete" runat="server" CommandArgument='<%#Eval("Test")%>' OnClientClick="if(!confirm('Are you sure you want delete this?')) return false;" CommandName="Delete" Text="Test" />
</ItemTemplate>
</telerik:RadListView>
<asp:Label ID="lblCommandArg" runat="server"></asp:Label>
</asp:Panel>
代码隐藏:
protected void lst_NeedDataSource(object sender, RadListViewNeedDataSourceEventArgs e)
{
DataTable table = new DataTable();
table.Columns.Add("Test", typeof(string));
DataRow row = table.NewRow();
row.SetField<string>("Test", "Testing");
table.Rows.Add(row);
row = table.NewRow();
row.SetField<string>("Test", "Testing again");
table.Rows.Add(row);
lst.DataSource = table;
}
protected void lst_Command(object sender, RadListViewCommandEventArgs e)
{
lblCommandArg.Text = e.CommandArgument.ToString();
}
使用RadAjaxPanel
代替RadAjaxManager
查看您的代码,看起来最简单的解决方案可能是使用RadAjaxPanel
而不是RadAjaxManager
。我不确定这是否适合您,但这可能是让您的代码正常工作的最简单方法。
对panGameWaypoints
使用RadAjaxPanel而不是常规Panel,这将确保其中包含的所有内容都使用AJAX:
<telerik:RadAjaxPanel ID="panGameWaypoints" runat="server">
<telerik:RadListView ID="RadListView1" runat="server" ... >
</telerik:RadAjaxPanel>
答案 1 :(得分:0)
您是否尝试将以下代码添加到Page_Init事件?
RadListView1.OnDataBound += new EventHandler(lstGameWaypoints_DataBound);
RadListView1.OnItemCreated += new EventHandler(lstGameWaypoints_ItemCreated);
RadListView1.OnItemCommand += new EventHandler(lstGameWaypoints_ItemCommand);
这应该将你的事件挂钩在每个回发上。
答案 2 :(得分:0)
我认为您需要告诉RadAjaxManager
更新自己的列表......?这没有任何意义,但请尝试将其添加到RadAjaxManager
:
<telerik:AjaxSetting AjaxControlID="lstGameWaypoints">
<UpdatedControls>
<telerik:AjaxUpdatedControl ControlID="lstGameWaypoints" LoadingPanelID="RadAjaxLoadingPanel1" />
</UpdatedControls>
</telerik:AjaxSetting>
这样RadListView
将重新连接它的事件。
答案 3 :(得分:0)
我不需要添加
<telerik:AjaxSetting AjaxControlID="panGameWaypoints">
<UpdatedControls>
<telerik:AjaxUpdatedControl ControlID="panGameWaypoints" LoadingPanelID="RadAjaxLoadingPanel1" />
</UpdatedControls>
</telerik:AjaxSetting>
使用此代替上面的
<telerik:AjaxSetting AjaxControlID="lstGameWaypoints">
<UpdatedControls>
<telerik:AjaxUpdatedControl ControlID="lstGameWaypoints" LoadingPanelID="RadAjaxLoadingPanel1" />
</UpdatedControls>
</telerik:AjaxSetting>
我没有看到lstGameWaypoints ItemCommand事件是有线的,你也可以使用item命令的OnItemDeleting事件。
答案 4 :(得分:0)
我认为问题出在你附加在btnDelete上的OnClientClick事件上。
我试图模拟你的情况,我用一个RadButton替换了Button(你在Telerik环境中,对吗?),暴露事件OnClientClicking。所以我创建了一个js函数:
function RadConfirm_Delete(sender, args)
{
var callBackFunction = Function.createDelegate(sender, function (shouldSubmit)
{
if (shouldSubmit)
{
this.click();
}
});
radconfirm("Are you sure you want to delete this waypoint?", callBackFunction, 350, 100, null, "Confirm delete");
args.set_cancel(true);
}
我已将RadButton设置为:
<telerik:RadButton runat="server" ID="btnDelete" CssClass="deleteButton" CommandArgument='<%# Eval("WaypointID") %>' CommandName="Delete" Text="X" OnClientClicking="RadConfirm_Delete" />
一切似乎都正常。
让我知道!