用戶控件按鈕單擊事件未提升

Question

我有一個用戶控件已被動態添加到頁面。當我點擊用戶控制按鈕：

1. 的button_click事件沒有被提出
2. 回
3. 用戶控件從頁面

這裏移除頁面職位的按鈕在我的用戶控件上點擊事件：

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 

這裏是動態添加控件：

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

當添加控件動態的頁面，您必須是一定要控制添加到頁面上的每一個訪問。在第一次訪問時添加動態控件是一個常見的錯誤，但在回發上添加而不是 - 這是行不通的！您需要在每次訪問時將動態控件添加到控件層次結構中。

這裏有一對夫婦的資源我動態創建控件工作之前推薦閱讀：

• 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

快樂編程！

Answer 2

整潔的解決方法在這裏找到：http://www.justskins.com/forums/placeholder-child-of-child-49926.html。