我正在动态地在页面上创建一个按钮。现在我想在该按钮上使用按钮点击事件。我怎么能在VB.net& asp.net?
我的代码:
页面加载:
Protected Sub Page_Load(sender As Object, e As EventArgs) Handles Me.Load
Try
LoadControls()
Catch ex As Exception
End Try
End Sub
加载控件
Private Sub LoadControls()
Try
Dim ButtonTable As New HtmlTable
Dim ButtonTableRow As New HtmlTableRow
Dim ButtonTableCell As New HtmlTableCell
Dim btnCode As New Button
btnCode.ID = "btnCode"
btnCode.Text = "btnCode"
AddHandler btnCode.Click, AddressOf btnCode_Click
ButtonTableCell.Controls.Add(btnCode)
ButtonTableRow.Cells.Add(ButtonTableCell)
ButtonTable.Rows.Add(ButtonTableRow)
ControlsPlaceHolder.Controls.Add(ButtonTable)
Catch ex As Exception
End Try
End Sub
事件处理程序
Private Sub btnCode_Click(sender As Object, e As EventArgs)
Dim buttonId As New Button
Try
buttonId = DirectCast(sender, Button)
// My execution
Catch ex As Exception
End Try
End Sub
问题:
事件处理程序不会出现.. !!它会抛出错误
Multiple controls with the same ID were found
此代码有什么问题.. !!
答案 0 :(得分:2)
创建动态按钮后,“订阅”您的事件处理程序btnCode_Click
到按钮的事件:
AddHandler btnCode.Click, AddressOf btnCode_Click
然后EventHandler
必须至少Protected
,但您的Private
- 无法访问