动态网格视图在rowcommand上有0行

我有一个动态创建的网格视图,我使用addhandler命令将一个处理程序附加到它上面。

问题是,当我试图在该函数中引用sender.rows时,它不会做任何事情,因为它说sender.rows.count=0。

我已经做了足够多的动态表单创建工作,我确信我正在创建控件,绑定它们,并在页面初始化/加载/加载完成时在适当的点添加处理程序。

另外,我在另一个非动态窗体上有几乎完全相同的代码,它能够访问行中的值。

考虑到rowcommand事件正在触发,很明显我正在单击一行。出于某种原因,它不在处理程序事件的范围内。

有人对如何解决这个问题有什么想法吗?

背景:我真正想做的是访问数据绑定到行的值。我正在创建一个sqlcommand并将其绑定到动态网格,我更愿意与网格的数据源进行对话,但这似乎不可能。也许我遗漏了一些东西,但目前看来,从网格视图中读取值(我讨厌这样做)是唯一可行的。

谢谢, 肖恩

更新(代码):

创建动态视图(在加载事件时执行)

sbFormHTML.AppendLine(String.Format("<tr><td colspan=""2""><asp:GridView ID=""{0}"" runat=""server"" DataKeyNames=""primary_key""><Columns>", dataElement.Attributes.GetNamedItem("name").Value))

sbFormHTML.AppendLine("<asp:BoundField DataField=""primary_key"" Visible=""False"" SortExpression=""primary_key"" />")
sbFormHTML.AppendLine("<asp:CommandField SelectText=""Edit"" ShowSelectButton=""True"" />")
sbFormHTML.AppendLine("<asp:CommandField ShowDeleteButton=""True"" />")

For Each data_item As XmlNode In dataElement.SelectSingleNode("data_items").ChildNodes

    Dim header As String = fnGetAttributeValue(data_item, "label")
    If header = "" Then header = data_item.Attributes.GetNamedItem("dbfield").Value

    sbFormHTML.AppendLine(String.Format("<asp:BoundField DataField=""{0}"" HeaderText=""{1}"" SortExpression=""{0}"">", data_item.Attributes.GetNamedItem("dbfield").Value, header))
    sbFormHTML.AppendLine("</asp:BoundField>")

Next
sbFormHTML.AppendLine("</Columns></asp:GridView>")
sbFormHTML.AppendLine(String.Format("</td></tr>"))

AddHandler:

'bind grid RowCommand function to all dynamic grids
Dim dynamicGrids = findWebControlsRecursive(Page, "^gvDyn")
For Each dynamicGrid As GridView In dynamicGrids
    AddHandler dynamicGrid.RowCommand, AddressOf subHandleRowCommand
    Response.Write(String.Format("{0} has {1} rows<br/>", dynamicGrid.ID, dynamicGrid.Rows.Count))
Next

尝试用它做些什么:

Protected Sub subHandleRowCommand(ByVal sender As GridView, ByVal e As System.Web.UI.WebControls.GridViewCommandEventArgs)
    'skm
    If e.CommandName = "Select" Then


        Try
            Response.Write(String.Format("{0} has {1} rows<br/>", sender.ID, sender.Rows.Count))

    'Remainder of the code snipped for brevity.

End Sub

数据绑定网格:

Protected Sub sbLoadGrid(ByVal gridNode As XmlNode)

    ' Databind a GridView object to its SQL query

    Dim conn As SqlConnection = New SqlConnection('connection string here')
    conn.Open()
    Dim cmd As SqlCommand = New SqlCommand("", conn)
    Dim dbTable As String = gridNode.Attributes.GetNamedItem("dbtable").Value

    cmd.CommandText = String.Format("SELECT {0}ID AS primary_key,", dbTable)
    For Each data_item As XmlNode In gridNode.SelectSingleNode("data_items").ChildNodes
        cmd.CommandText &= String.Format(" {0},", data_item.Attributes.GetNamedItem("dbfield").Value)
    Next

    cmd.CommandText = Regex.Replace(cmd.CommandText, ",$", String.Format(" FROM {0}", dbTable))

    Dim dsGrid As SqlDataReader = cmd.ExecuteReader

    Dim tempGrid As GridView = getControlReference(gridNode.Attributes.GetNamedItem("name").Value)
    tempGrid.DataSource = dsGrid
    tempGrid.AutoGenerateColumns = False

    tempGrid.DataBind()



End Sub