在動態HTML表格中查找動態控件

Question

我正試圖在動態HTML表格中查找動態控件。我有以下內容：

System.Web.UI.HtmlControls.HtmlTableRow TR = null; 
System.Web.UI.HtmlControls.HtmlTableCell TD1 = null; 
System.Web.UI.HtmlControls.HtmlTableCell TD2 = null; 
System.Web.UI.HtmlControls.HtmlTableCell TD3 = null; 
System.Web.UI.HtmlControls.HtmlTableCell TD4 = null; 
System.Web.UI.HtmlControls.HtmlTableCell TD5 = null; 
System.Web.UI.HtmlControls.HtmlTableCell TD6 = null; 

// Database stuff 
int i = 1; 
while (objRdr.Read()) 
{ 
    TR = new System.Web.UI.HtmlControls.HtmlTableRow(); 
    TD1 = new System.Web.UI.HtmlControls.HtmlTableCell(); 
    TD2 = new System.Web.UI.HtmlControls.HtmlTableCell(); 
    TD3 = new System.Web.UI.HtmlControls.HtmlTableCell(); 
    TD4 = new System.Web.UI.HtmlControls.HtmlTableCell(); 
    TD5 = new System.Web.UI.HtmlControls.HtmlTableCell(); 
    TD6 = new System.Web.UI.HtmlControls.HtmlTableCell(); 

    // ASP code maybe wrong, but its to give you the ID. 
    TD1.InnerHtml = "<asp:RadioButton runat='server' ID='radApprove"+i.ToString()+"' Value='Approve' />"; 
    TD2.InnerText = HttpUtility.HtmlEncode(objRdr[1].ToString()); 
    TD3.InnerText = HttpUtility.HtmlEncode(objRdr[6].ToString()); 
    TD4.InnerText = HttpUtility.HtmlEncode(objRdr[2].ToString()); 
    TD5.InnerText = HttpUtility.HtmlEncode(objRdr[10].ToString()); 
    TD6.InnerText = HttpUtility.HtmlEncode(objRdr[8].ToString()); 

    TR.Cells.Add(TD1); 
    TR.Cells.Add(TD2); 
    TR.Cells.Add(TD3); 
    TR.Cells.Add(TD4); 
    TR.Cells.Add(TD5); 
    TR.Cells.Add(TD6); 

    tblOrderItems.Rows.Add(TR); 
    TR = null; 
    TD1 = null; 
    TD2 = null; 
    TD3 = null; 
    TD4 = null; 
    TD5 = null; 
    TD6 = null; 
    i++; 
} 

現在，當我嘗試從單元中獲取數據時，它失敗。我曾嘗試過：

this.FindControl("radApprove1"); 

但是這會返回一個null。我也嘗試迭代表中的行，但它只表示1行，這是標題。該代碼從Page_Load中調用，所以我認爲我可以獲得這些控件。在呈現頁面後查看頁面的HTML源代碼時，我可以看到它們已被正確渲染。有任何想法嗎？

Answer 1

TD1.InnerHtml = "<asp:RadioButton runat='server' ID='radApprove"+i.ToString()+"' Value='Approve' />" 

不能完全肯定，如果上面會工作。你爲什麼不考慮使用<asp:Table>來處理這個問題？

有尋找孩子的控制有限度的技術：http://weblogs.asp.net/dwahlin/archive/2006/08/25/Finding-ASP.NET-Child-Controls_2E002E002E002E00_The-Simple-Way.aspx

希望這有助於。

Answer 2

this.FindControl（「radApprove1」）;只會檢查您的控件的主INamingContainer。 你需要遞歸找到它或做：

僞：

foreach row in a table.Rows 
    foreach cell in row 
    cell.FindControl()