用户控件按钮单击事件未提升

Question

我有一个用户控件已被动态添加到页面。当我点击用户控制按钮：

1. 的button_click事件没有被提出
2. 回
3. 用户控件从页面

这里移除页面职位的按钮在我的用户控件上点击事件：

Protected Sub btnAddAttribute_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnAddAttribute.Click 
     Try 
      Dim attrName As String = txtAddAttributeName.Text 
      Dim attrValue As String = txtAddAttributeValue.Text 

      'ADD ATTRIBUTE TO ATTRIBUTE TABLE 
      putSQLData("INSERT INTO OD_Attribute_Values (AttributeName, AttributeValue) VALUES('" & attrValue & "', '" & attrName & "'") 

      'ADD ATTRIBUTE TO PRODUCT DATA FOR THIS PRODUCT 
      putSQLData("UPDATE OD_Product_Data SET VariantMapping = VariantMapping + ' | " & attrName & ":" & attrValue & "' WHERE SKU = '" & SelectedSKU & "'") 

      'ADD NEW ctrlAttribute TO PARENT PLACEHOLDER AND SET VALUES 
      Dim newAttr As New AttributeControl 
      newAttr.AttributeName = attrName 
      newAttr.AttributeValue = attrValue 
      Page.Controls.AddAt(Page.FindControl("phAttributes").ClientID, newAttr) 

      'REMOVE THIS CONTROL FROM PARENT PLACEHOLDER 
      Me.Dispose() 

     Catch ex As Exception 
      Common.SendError(ex.Message, "AttributeControl.btnAddAttribute_Click") 
     End Try 
End Sub 

这里是动态添加控件：

Protected Sub Page_Init(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Init 
     'WEB TAB 
     getAttributes() 
End Sub 

    Protected Sub getAttributes() 
     Try 
      Dim attr As String = "" 
      Dim attrName As String = "" 
      Dim attrValue As String = "" 

      Dim ds As DataSet = getSQLData("SELECT VariantMapping FROM OD_Product_Data WHERE SKU='" & selectedSKU & "'") 
      For Each dr As DataRow In ds.Tables(0).Rows() 
       attr = dr(0).ToString 
      Next 
      ds = Nothing 
      Dim attrArr As Array = attr.Split("|") 
      For Each item As String In attrArr 
       Dim attrDetail As Array = item.Split(":") 
       attrName = attrDetail(0) 
       attrValue = attrDetail(1) 
       Dim ctrlAttributes As AttributeControl = LoadControl("ctrlAttribute.ascx") 
       ctrlAttributes.AttributeName = attrName 
       ctrlAttributes.AttributeValue = attrValue 
       ctrlAttributes.ID = "ctrlAttribute-" & attrName 
       phAttributes.Controls.Add(ctrlAttributes) 
      Next 
     Catch ex As Exception 
      SendError(ex.Message, "Default.getAttributes") 
     End Try 
End Sub 

Protected Sub btnAddAttribute_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnAddAttribute.Click 
     Dim ctrlAttributes As AttributeControl = LoadControl("ctrlAttribute.ascx") 
     ctrlAttributes.ID = "ctrlAttribute" & phAttributes.Controls.Count + 1 
     phAttributes.Controls.Add(ctrlAttributes) 
End Sub 

Protected Sub btnCreateAttribute_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnCreateAttribute.Click 
     Dim ctrlAddAttribute As AddAttributeControl = LoadControl("ctrlAddAttribute.ascx") 
     ctrlAddAttribute.SelectedSKU = selectedSKU 
     ctrlAddAttribute.ID = "ctrlAddAttribute" & phAttributes.Controls.Count + 1 
     phAttributes.Controls.Add(ctrlAddAttribute) 
End Sub 

Answer 1

当添加控件动态的页面，您必须是一定要控制添加到页面上的每一个访问。在第一次访问时添加动态控件是一个常见的错误，但在回发上添加而不是 - 这是行不通的！您需要在每次访问时将动态控件添加到控件层次结构中。

这里有一对夫妇的资源我动态创建控件工作之前推荐阅读：

• Dynamic Controls in ASP.NET
• Working with Dynamically Created Controls
• Truly Understanding Dynamic Controls
• Creating Dynamic Data User Interfaces
• Creating a Dynamic, Data-Driven User Interface

快乐编程！

Answer 2

整洁的解决方法在这里找到：http://www.justskins.com/forums/placeholder-child-of-child-49926.html。