我正在动态构建数据表并将其绑定到 VB 代码隐藏中的网格视图。我将 gridview 单元格数据转换为 LinkButton 控件，以允许单击该数据进行更新。
我正在使用 AjaxControlToolkit 来呈现一个模式弹出窗口来收集数据更新。完成这些更新后，我将重建数据表并绑定网格视图。在 Gridview.RowCreated 中，我在回发时重复创建 LinkButton 控件。
当页面在更新后出现时，当我单击 LinkButton 时会发生回发，但不会触发 RowCommand。在调试时，我注意到发生这种情况时，Page.FindControl() 无法找到目标 LinkButton 控件。
返回页面时不触发 RowCommand 事件以触发模式弹出窗口的显示。如果我只是再次按下 LinkButton，则可以使用 Page.FindControl() 找到 LinkButton 控件，并根据需要触发 RowCommand。
我错过了什么？非常感谢您提供解决此问题的任何想法。我整天都在为此苦苦挣扎，而且我的想法已经不多了。
谢谢！
这是请求的代码：
<asp:GridView ID="CustomeGridview" GridLines="Vertical" Width="100%" runat="server"
BackColor="White" BorderColor="#999999" BorderStyle="Solid" BorderWidth="1px"
CellPadding="3" AutoGenerateColumns="true" ForeColor="Black" ShowHeader="False" Font-Names="Verdana"
Font-Size="11px" OnRowCommand="CustomeGridview_RowCommand"
OnRowDataBound="CustomeGridview_RowDataBound">
<FooterStyle BackColor="#CCCCCC" />
<SelectedRowStyle BackColor="#000099" Font-Bold="True" ForeColor="White" />
<PagerStyle BackColor="#999999" ForeColor="Black" HorizontalAlign="Center" />
<HeaderStyle BackColor="Black" Font-Bold="True" ForeColor="White" />
<AlternatingRowStyle BackColor="#CCCCCC" />
</asp:GridView>
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Response.CacheControl = "no-cache"
Response.Expires = -1
Response.AddHeader("Pragma", "no-cache")
If Page.IsPostBack = False Then
ViewState("Left") = 3
ViewState("Right") = 6
generateManualDt()
Else
Dim controlName As String = Request.Params.Get("__EVENTTARGET")
Dim ctl As Control = Page.FindControl(controlName)
End If
Page_Header_Label.Text = "Action Qualification Matrix - " & Session("CurrentServiceName")
FormatColumns()
End Sub
Public Sub generateManualDt()
Dim ManualDt As DataTable = BuildMainDataTable()
ViewState("ManualDt") = ManualDt
CustomeGridview.DataSource = ManualDt
CustomeGridview.DataBind()
SetJumpScrollButtons()
End Sub
Protected Sub CustomeGridview_RowDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles CustomeGridview.RowDataBound
Dim dt As DataTable = DirectCast(ViewState("ManualDt"), DataTable)
Dim dtsnocol As DataTable = DirectCast(ViewState("dtsnocol"), DataTable)
If e.Row.RowType = DataControlRowType.DataRow OrElse e.Row.RowType = DataControlRowType.Header Then
For gvCol As Integer = 7 To dt.Columns.Count - 1
e.Row.Cells(gvCol).Visible = False
Next
SetupGridRowControls(e, dtsnocol, dt)
End If
End Sub
Protected Sub CustomeGridview_RowCreated(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles CustomeGridview.RowCreated
Dim dt As DataTable = DirectCast(ViewState("ManualDt"), DataTable)
Dim dtsnocol As DataTable = DirectCast(ViewState("dtsnocol"), DataTable)
e.Row.Cells(0).Visible = False ' Hide the QuestionID column
If Page.IsPostBack Then
If e.Row.RowType = DataControlRowType.DataRow OrElse e.Row.RowType = DataControlRowType.Header Then
SetupGridRowControls(e, dtsnocol, dt)
End If
End If
End Sub
Private Sub SetupGridRowControls(ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs, ByRef dtsnocol As DataTable, ByRef mainDt As DataTable)
Dim CurrSnoCount As Integer = 0
If Not dtsnocol Is Nothing Then
CurrSnoCount = dtsnocol.Rows.Count
End If
If e.Row.DataItemIndex = 0 Then ' Scenario Number row
Dim snoLabel As New Label()
snoLabel.Text = "SCENARIO "
snoLabel.ID = "snoHdrLabel"
e.Row.Cells(2).Controls.Add(snoLabel)
Dim addScenarioBtn = buildAddButton("AddScenario", "", "Click to add a new scenario column")
e.Row.Cells(2).Controls.Add(addScenarioBtn)
ElseIf e.Row.DataItemIndex = 1 Then ' Question Header and Sno Descriptions
Dim questLabel As New Label()
questLabel.Text = "QUESTIONS "
questLabel.ID = "questdrLabel"
e.Row.Cells(2).Controls.Add(questLabel)
Dim addQuestionBtn = buildAddButton("AddQuestion", "", "Click to add a new question row")
e.Row.Cells(2).Controls.Add(addQuestionBtn)
Dim cellText As String = ""
Dim snoId As String = ""
For snoRowIdx As Integer = 0 To CurrSnoCount - 1
snoId = dtsnocol.Rows(snoRowIdx)("ScenarioID").ToString()
cellText = dtsnocol.Rows(snoRowIdx)("Note").ToString()
Dim lnkBtn = buildLinkButton("EditScenario", snoId, cellText)
e.Row.Cells(snoRowIdx + 3).Controls.Add(lnkBtn)
Next
ElseIf e.Row.DataItemIndex > 1 Then ' Question / Responses
Dim cellText As String = ""
Dim cellAddr As String = ""
Dim snoId As String = ""
Dim questId As String = mainDt.Rows(e.Row.DataItemIndex).Item(0).ToString.Trim
For snoRowIdx As Integer = 0 To CurrSnoCount - 1
snoId = dtsnocol.Rows(snoRowIdx)("ScenarioID").ToString.Trim
cellAddr = String.Format("{0}:{1}", questId, snoId)
cellText = mainDt.Rows(e.Row.DataItemIndex).Item(snoRowIdx + 3).ToString.Trim
Dim lnkBtn = buildLinkButton("EditResponses", cellAddr, cellText)
e.Row.Cells(snoRowIdx + 3).Controls.Add(lnkBtn)
Next
End If
End Sub
Private Function buildLinkButton(ByVal linkCmd As String, ByVal linkCmdArg As String, ByVal linkText As String) As LinkButton
Dim lnkBtn As New LinkButton()
lnkBtn.Text = linkText
lnkBtn.CommandName = linkCmd
lnkBtn.CommandArgument = linkCmdArg
lnkBtn.ToolTip = "Click to update"
lnkBtn.CssClass = "cell_link"
Return lnkBtn
End Function
Private Function buildAddButton(ByVal btnCmd As String, ByVal btnCmdArg As String, ByVal btnToolTip As String) As ImageButton
Dim imgBtn As New ImageButton()
imgBtn.CommandName = btnCmd
imgBtn.CommandArgument = btnCmdArg
imgBtn.ImageUrl = "~/Images/services/SmallAddBtn.gif"
imgBtn.ToolTip = btnToolTip
imgBtn.ID = String.Format("{0}_GenImageButton", btnCmd)
Return imgBtn
End Function