how to hide columns in ASP.NET webform

Question

In my PrinterPackage. file i have the following : 文件具有以下 ：

<%@ Register Src="~/ProvisionControls/DeferredTaxRollforwardControl.ascx" TagPrefix="uc9" TagName="DeferredTaxesRollforwardControl" %> 
   ...
   ...
 <div>
    <uc9:DeferredTaxesRollforwardControl ID="DeferredTaxesRollforwardControl1" runat="server" />
 </div>

which calls the control file 'DeferredTaxRollforwardControl. ' that contains my table defined as follows: '定义如下：

<table style="width: 4600px; border-spacing:0px;" border="0" frame="hsides" cellpadding="2" cellspacing="1">

<tr id = "tblTempDiff"> //want to import this


<td style="width:7.6%;" width="2px;" class="paintYellowTotalLeftBold">
    Grand Total Current
</td>
<td style="width:2.8%;" width="2px;" class="paintYellowTotalBold">
    <asp:Label ID="lblGrandTotalUnadjustedBeginningBalance" runat="server" Text=""></asp:Label>
</td>
... and more <td>

I am trying to display the table and also hide some of the columns using the following code in my PrinterPackage. file : 文件：

 TableRow row = DeferredTaxesRollforwardControl1.FindControl("tblTempDiff") as TableRow;
        row.Cells[0].Visible = true;
        row.Cells[1].Visible = true;
        row.Cells[2].Visible = true;
        row.Cells[3].Visible = true;
        row.Cells[4].Visible = true;
        row.Cells[5].Visible = true;
        row.Cells[6].Visible = true;
        row.Cells[7].Visible = true;
        row.Cells[8].Visible = true;
        row.Cells[9].Visible = false;
        row.Cells[10].Visible = false;
        row.Cells[11].Visible = false;
        row.Cells[12].Visible = false;

But, this doesn't seem to pick up the table row and gives me a null value instead. ，而是给了我一个空值。 How can i import the data from the TableRow into and then hide whatever columns i want to hide? 的数据导入 ，然后隐藏我要隐藏的任何列？

Answer 1

@user1319424: Rather than already creating table, use place holder and then create dynamic table and bind that table to a placeholder.

Refer below link: http://www.dotnetcurry.com/ShowArticle.aspx?ID=135

Answer 2

The code behind cannot see the <tr> you created because it's not a server control. Add the runat="server" attribute to the <tr> :

<tr id="tblTempDiff" runat="server">

And use System.Web.UI.HtmlControls.HtmlTableRow instead of TableRow . Two different things.