Question

Cannot Find Control in Listview

Asked by: thomasmutton

Hello experts,

I have a datapager within a ListView control and I cannot seem to find the control to get an instance of it.

I have tried to code attatched but doesn't work.

DataPager pager = ((DataPager)ListView1.FindControl("DataPager1"));

Can anyone help?

Thanks in advance.

<asp:ListView ID="ListView1" visible="false" runat="server" >
                <LayoutTemplate>
                    <div style="float: left; width: 100%; border-top: 2px solid #e20a16; padding-top: 20px; margin-top: 20px;">
                        <asp:PlaceHolder ID="itemPlaceholder" runat="server" />
                    </div>
                    <asp:DataPager ID="DataPager1" runat="server" PagedControlID="ListView1" PageSize="10" style="float: left; width: 100%;">
                        <fields>
                            <asp:nextpreviouspagerfield ButtonType="Link" ShowFirstPageButton="False" ShowNextPageButton="False" ShowPreviousPageButton="True" />
                            <asp:numericpagerfield />
                            <asp:nextpreviouspagerfield ButtonType="Link" ShowLastPageButton="False" ShowNextPageButton="True" ShowPreviousPageButton="False" />
                        </fields>
                    </asp:DataPager>
                </LayoutTemplate>
                <ItemTemplate>
                    <asp:HyperLink ID="HyperLinkName" Text='<%# Eval("pagename") %>' NavigateUrl='<%# "page.aspx?id=" + Eval("Page_ID") %>' style="float: left; color: #e20a16; font-weight: bold; margin-bottom: 5px;" runat="server" />
                    <asp:Label ID="LtrlOverview" Text='<%# Eval("pagetext") + "..." %>' style="float: left; width: 100%; color: #605b54; margin-bottom: 15px;" runat="server" />
                </ItemTemplate>
                <EmptyDataTemplate>
                    <div style="float: left; width: 100%; border-top: 2px solid #e20a16; padding-top: 20px; margin-top: 20px;">
                        <asp:Label ID="lblNoMatches" Text="Sorry, no matches were found!" runat="server" />
                    </div>
                </EmptyDataTemplate>
            </asp:ListView>

                                  
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Asked On
2008-03-11 at 13:06:36ID23233102
Tags

ASP.NET C#

,

any

,

n/a

Topic

Programming for ASP.NET

Participating Experts
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Comments
3

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Answers

 

by: TheLearnedOnePosted on 2008-03-11 at 13:28:01ID: 21099867

FindControl is a major problem with any ASP.NET web site.  I usually look at the View Source in the browser and how the control's unique ID is generated to determine the "best" way find the control.

Bob

 

by: thomasmuttonPosted on 2008-03-12 at 04:10:56ID: 21104660

Thankyou for your response. I have looked at the source and it comes up with "ctl00_ContentPlaceHolder1_ListView1_DataPager1"

and that does correspond with my code

DataPager pager = ((DataPager)ListView1.FindControl("DataPager1"));

This seems to be a problem with the ListView control, I have tried findcontrol with other data controls and they seem to work o.k

Anyone?

 

by: thomasmuttonPosted on 2008-03-12 at 04:25:14ID: 21104724

I found a solution to this.

I created a data bound event on the listview

    protected void ListView1_DataBound(object sender, EventArgs e)
    {
        DataPager pager = ((DataPager)ListView1.FindControl("DataPager1"));

        Response.Write(pager.TotalRowCount);
    }

You can then get access to a control within the ListView

Thanks

20120131-EE-VQP-002

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