动态创建的 LinkButton 不触发任何事件
我通过在 ItemDataBound 事件期间将 LinkButton 注入 Telerik RadGrid 上来自定义组标题。该按钮呈现完美，但我无法让它命中任何事件处理程序。
下面是创建按钮的代码：
Private Sub rgWorkRequestItemCosts_ItemDataBound(ByVal sender As Object, ByVal e As Telerik.Web.UI.GridItemEventArgs) Handles rgWorkRequestItemCosts.ItemDataBound
If TypeOf e.Item Is GridGroupHeaderItem Then
Dim oItem As GridGroupHeaderItem = DirectCast(e.Item, GridGroupHeaderItem)
Dim lnkAdd As New LinkButton()
lnkAdd.ID = "lnkAdd"
lnkAdd.CommandName = "CustomAddWorkRequestItemCost"
lnkAdd.CommandArgument = DirectCast(oItem.DataItem, DataRowView).Row("nWorkRequestItemID").ToString()
lnkAdd.Text = String.Format("<img style=""border:0px"" alt="""" width=""12"" src=""{0}"" /> Add new cost", ResolveUrl(String.Format("~/App_Themes/{0}/Grid/AddRecord.gif", Page.Theme)))
lnkAdd.Style("color") = "#000000"
lnkAdd.Style("text-decoration") = "none"
AddHandler lnkAdd.Click, AddressOf lnkAdd_Click
Dim tcPlaceholder As GridTableCell = DirectCast(oItem.Controls(1), GridTableCell)
Dim litText As New LiteralControl(String.Format(" {0}", tcPlaceholder.Text))
tcPlaceholder.Text = String.Empty
tcPlaceholder.Controls.Add(lnkAdd)
tcPlaceholder.Controls.Add(litText)
End If
End Sub
此代码显式地为 LinkButton 添加一个处理程序，但该处理程序永远不会被命中。我也尝试过 RadGrid 上的事件（ItemCommand、ItemEvent），但似乎没有一个被击中。
有没有人对其他活动有任何建议可以尝试，或者如何使这项工作发挥作用？
谢谢！
I'm customising the Group Headers on a Telerik RadGrid by injecting a LinkButton into it during the ItemDataBound event. The button renders perfectly, but I can't get it to hit any event handlers.
Here is the code for the button creation:
Private Sub rgWorkRequestItemCosts_ItemDataBound(ByVal sender As Object, ByVal e As Telerik.Web.UI.GridItemEventArgs) Handles rgWorkRequestItemCosts.ItemDataBound
If TypeOf e.Item Is GridGroupHeaderItem Then
Dim oItem As GridGroupHeaderItem = DirectCast(e.Item, GridGroupHeaderItem)
Dim lnkAdd As New LinkButton()
lnkAdd.ID = "lnkAdd"
lnkAdd.CommandName = "CustomAddWorkRequestItemCost"
lnkAdd.CommandArgument = DirectCast(oItem.DataItem, DataRowView).Row("nWorkRequestItemID").ToString()
lnkAdd.Text = String.Format("<img style=""border:0px"" alt="""" width=""12"" src=""{0}"" /> Add new cost", ResolveUrl(String.Format("~/App_Themes/{0}/Grid/AddRecord.gif", Page.Theme)))
lnkAdd.Style("color") = "#000000"
lnkAdd.Style("text-decoration") = "none"
AddHandler lnkAdd.Click, AddressOf lnkAdd_Click
Dim tcPlaceholder As GridTableCell = DirectCast(oItem.Controls(1), GridTableCell)
Dim litText As New LiteralControl(String.Format(" {0}", tcPlaceholder.Text))
tcPlaceholder.Text = String.Empty
tcPlaceholder.Controls.Add(lnkAdd)
tcPlaceholder.Controls.Add(litText)
End If
End Sub
This code explicitly adds a handler for the LinkButton, but that handler is never hit. I've also tried events on the RadGrid (ItemCommand, ItemEvent) but none seem to get hit.
Has anyone got any suggestions of other events to try, or ways to make this work?
Thanks!
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我无法找到一个“好的”解决方案。最后我做了以下事情：
ItemCreated 事件处理程序，设置
其 CommandArgument 到计数器
每增加一次
创建的组标题
ItemDataBound事件，再次设置
其 CommandArgument 到计数器
价值。此时我添加了一个
记录到字典对象
（存储在 ViewState 中）链接
与实际值相反
团体。
按钮，提取组值
从 viewstate 中的字典到
完成处理。
丑陋，但它有效。
I wasn't able to find a "nice" solution to this. In the end I did the following:
ItemCreated event handler, setting
its CommandArgument to a counter
which was incremented for every
group header created
ItemDataBound event, again settings
its CommandArgument to the counter
value. At this point I added a
record to a dictionary object
(stored in ViewState) linking the
counter to the actual value of the
group.
button, extracting the group value
from the dictionary in viewstate to
complete the processing.
Ugly, but it works.