how to find control from header template of a datalist? RSS

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  pkrishnan

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  how to find control from header template of a datalist?

  Sep 26, 2007 07:42 AM|LINK

   Hi,

  I have a textbox in header template of a datalist.

  From code behind i've to access these textbox from page_load event.

  I tried with the following code. 

  DataList.Controls[0].FindControl(”myControl”) 

  But it have error. 

  how to solve it? 

  Thanks,
  Krishna
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  kipo

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  Re: how to find control from header template of a datalist?

  Sep 26, 2007 08:34 AM|LINK

  You can access it from ItemDataBound event if you add this into DataList:

  OnItemDataBound="DataList1_ItemDataBound"

  and put this in code-behind:

   protected void DataList1_ItemDataBound(object sender, DataListItemEventArgs e)
   {
    if (e.Item.ItemType == ListItemType.Header)
    {
     TextBox myTextBox = (TextBox)e.Item.FindControl("myControl");
     myTextBox.Text = "DataList Header TextBox";
    }
   }

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  pkrishnan

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  Re: how to find control from header template of a datalist?

  Sep 26, 2007 09:12 AM|LINK

  Hi kipo,

  I'm not using any datalist event.

  I've to get value from page load event.

  Thanks 

  Thanks,
  Krishna
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  kipo

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  Re: how to find control from header template of a datalist?

  Sep 26, 2007 09:21 AM|LINK

  Is there any special reason why you can't use DataList events?

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  GillouX

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  Re: how to find control from header template of a datalist?

  Sep 26, 2007 09:32 AM|LINK

  the easiest option is to set a hidden field in javascript with and get it back in the page load

   

  but as said before, why use the page load event to handle the datalist ? 

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  pkrishnan

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  Re: how to find control from header template of a datalist?

  Sep 26, 2007 10:03 AM|LINK

   I

  kipo

  Is there any special reason why you can't use DataList events?

  Because before databind i've to dynamically get a value from the user. 

  Thanks,
  Krishna
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  kipo

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  Re: how to find control from header template of a datalist?

  Sep 26, 2007 01:10 PM|LINK

  I don't see why would that be a problem, but can you post your code?

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  ms.jatin_sah...

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  Re: how to find control from header template of a datalist?

  Jan 04, 2010 07:28 AM|LINK

  Instead of  finding  the control in the header template of datalist in page load event .you can put the code which you want to execute after finding the control inside a function and then call that function from the header template.Below is a example:->

  <asp:DataList ID="dtlisFirstSubCategories" runat="server">
          <HeaderTemplate>
              <%#GetParentCategoryName() %>
          </HeaderTemplate>
          <ItemTemplate>
              <asp:LinkButton ID="lbtnSubCategory" runat="server" CommandArgument='<%#Eval("ProductCategoryID")%>'
                  Text='<%#Eval("Name")%>'  PostBackUrl='<%#"~/Category.aspx?parentCategoryID="+Eval("ProductCategoryID") %>'
                  OnClick="lbtnSubCategory_Click"> </asp:LinkButton>
          </ItemTemplate>
      </asp:DataList>

  
  

  now in cs file you can put code as follows:->

  public string GetParentCategoryName()
      {

  String parentCategoryName="";      

    //add logic here to get the category name

  
  return parentCategoryName;
      }