动态控制事件处理 [英] Dynamic Controls Event Handling

问题描述

向大家致以问候



我在asp.net中有这个表，我正在为特定用户的某些数据创建动态行，我正在创建每行的动态按钮。



我想在按钮的按钮ID属性中存储每行数据的每个ID（因为没有标签属性） ）但由于动态按钮，我无法从我为处理按钮创建的程序中看到它。



现在我无法使用Addhandler命令发送任何参数或任何事情，我在网上尝试了很多想法，无法解决这个问题。



这里是我的代码的重要部分

 对于 I =  0    DT.Rows.Count  -   1  
  Dim  TR  As  新 TableRow 
 如果我 Mod   2 <>  0  然后 
 TR.BackColor = Color.Gray 
 TR.ForeColor = Color .White 
  Else  
 TR.BackColor = Color.White 
 TR.ForeColor = Color.Black 
 结束 如果 
 
 TC = 新 TableCell 
 TC.Horizo​​ntalAlign = Horizo​​ntalAlign.Center 
  Dim  b  As  < span class =code-keyword>新按钮
 b.Text =& quot;اجابة& quot; 
 b.Width =  40  
 
 b.ID = DT.Rows（I）.Item（& quot; ID& ;）
  AddHandler  b.Click， AddressOf  DynButton_Click 
 
 
 TC.Controls.Add（b）
 TC.Width =  40  
 TR.Cells.Add（TC）
 下一步 

 私有  Sub  DynButton_Click（ ByVal  sender  As  对象， ByVal  e  As  EventArgs）
 MsgBox（b.ID）
 结束  Sub  

解决方案

嗯......你们id注意 sender 参数？

将发件人转换为Button，你应该能够访问特定按钮的ID属性点击。

Greetings to you all

I have this table in asp.net and i`m creating dynamic rows for certain data of specific user, and I`m creating dynamic buttons for each row.

I want to store each ID the of each row of the data in the button ID property of the button (because there is no tag property) but because of the dynamic button, I can`t see it from the procedure I create for handling the button.

now I cant send any parameters using Addhandler command or any thing and i`ve tried many ideas online for solving this problem with no avail.

here is the significant part of my code

For I = 0 To DT.Rows.Count - 1
            Dim TR As New TableRow
            If I Mod 2 <> 0 Then
                TR.BackColor = Color.Gray
                TR.ForeColor = Color.White
            Else
                TR.BackColor = Color.White
                TR.ForeColor = Color.Black
            End If

            TC = New TableCell
            TC.HorizontalAlign = HorizontalAlign.Center
            Dim b As New Button
            b.Text = &quot;اجابة&quot;
            b.Width = 40

            b.ID = DT.Rows(I).Item(&quot;ID&quot;)
            AddHandler b.Click, AddressOf DynButton_Click


            TC.Controls.Add(b)
            TC.Width = 40
            TR.Cells.Add(TC)
            Next

Private Sub DynButton_Click(ByVal sender As Object, ByVal e As EventArgs)
        MsgBox(b.ID)
    End Sub

解决方案

Um...you did notice the sender parameter?
Cast the sender as a Button, and you should be able to access the ID property for the specific button that was clicked.

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