使用中继器内的Telerik的radcombobox控件
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18-09-2019 - |
题
我有一个包含一个Telerik的radcombobox控件的中继器:
<asp:Repeater ID="rpt" runat="server">
<ItemTemplate>
<telerik:RadComboBox ID="rcb" runat="server" EnableLoadOnDemand="true"
AllowCustomText="true" ItemRequestTimeout="1000"
NumberOfItems="10" MarkFirstMatch="false">
</telerik:RadComboBox>
</ItemTemplate>
</asp:Repeater>
在的Repeater ItemDataBound事件,我布线了ItemsRequested事件是这样的:
private void rpt_ItemDataBound(object sender, RepeaterItemEventArgs e) {
RadComboBox rcb = (RadComboBox)e.Item.FindControl("rcb");
rcb.ItemsRequested += rcb_ItemsRequested;
}
private void rcb_ItemsRequested(object o, RadComboBoxItemsRequestedEventArgs e) {
// Database call to load items occurs here.
// As configured, this method is never called.
}
目前,服务器侧rcb_ItemsRequested方法不会被调用。我怀疑布线在所述的ItemDataBound事件ItemsRequested是有问题的,但问题可能在于别处。
有关如何在中继器内使用Telerik的radcombobox控件任何想法正确?
解决方案
在试图把事件处理程序布线的标记,而不是动态添加呢?
此外 - 你可能知道,但以防万一 - ItemsRequested是一个事件,只有在一定条件下火灾。引用文档:
The ItemsRequested event occurs when the EnabledLoadOnDemand property is True and the user types text into the input field or clicks on the drop-down toggle image when the list is empty.
- 参考
您是否匹配方案上面?
修改强>:
我测试一些代码。以下作品(该ItemsRequested事件触发的所有组合框,并增加了三个测试项目在飞行中的下拉..):
标记:
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server" />
<asp:Repeater ID="rpt" runat="server" OnItemDataBound="rpt_ItemDataBound">
<ItemTemplate>
<br />
<telerik:RadComboBox ID="rcb" runat="server" EnableLoadOnDemand="true" AllowCustomText="true"
ItemRequestTimeout="1000" NumberOfItems="10" MarkFirstMatch="false" />
</ItemTemplate>
</asp:Repeater>
</form>
后面的代码:
protected void Page_Load(object sender, EventArgs e)
{
List<string> data = new List<string>();
data.Add("Item 1");
data.Add("Item 2");
//add some items to the repeater to force it to bind and repeat..
rpt.DataSource = data;
rpt.DataBind();
}
protected void rpt_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
//wire the event
RadComboBox rcb = (RadComboBox)e.Item.FindControl("rcb");
rcb.ItemsRequested += rcb_ItemsRequested;
}
protected void rcb_ItemsRequested(object sender, RadComboBoxItemsRequestedEventArgs e)
{
//add the items when requested.
(sender as RadComboBox).Items.Add(new RadComboBoxItem("Item1", "1"));
(sender as RadComboBox).Items.Add(new RadComboBoxItem("Item2", "2"));
(sender as RadComboBox).Items.Add(new RadComboBoxItem("Item3", "3"));
}
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