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POListview grouptemplate - code behind
 

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  1. POListview grouptemplate - code behind
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    <p>I am looking to programatically load the group template and layout template but I am getting the following error message:</p> <p><strong>A group placeholder must be specified on ListView 'Listview1' when the GroupTemplate is defined. Specify a group placeholder by setting its ID property to "ListView_GC$groupPlaceHolder1". The group placeholder control must also specify runat="server".</strong></p> <pre><code> protected void Listview1_Init(object sender, EventArgs e) { System.Diagnostics.Debug.WriteLine("in init"); Listview1.ItemPlaceholderID = "ListView_UC$itemPlaceHolder1"; Listview1.GroupPlaceholderID = "ListView_GC$groupPlaceHolder1"; Listview1.GroupItemCount = 3; Listview1.LayoutTemplate = LoadTemplate("~/Controls/ThumbnailView_LayoutTemplate.ascx"); Listview1.GroupTemplate = LoadTemplate("~/Controls/ThumbnailView_GroupTemplate.ascx"); Listview1.ItemTemplate = LoadTemplate("~/Controls/ThumbnailView_ItemTemplate.ascx"); } void Listview1_LayoutCreated(object sender, EventArgs e) { Listview1.Controls.RemoveAt(0); Control newLayoutContainer = new Control(); Listview1.LayoutTemplate.InstantiateIn(newLayoutContainer); Listview1.GroupTemplate.InstantiateIn(newLayoutContainer); var userControl = newLayoutContainer.Controls[0]; var usergControl = newLayoutContainer.Controls[1]; userControl.ID = "ListView_UC"; usergControl.ID = "ListView_GC"; Listview1.Controls.Add(newLayoutContainer); } </code></pre> <p>Can anyone help?</p> <p>EDIT:</p> <p>Markup for the control...</p> <pre><code>&lt;%@ Control Language="C#" AutoEventWireup="true" CodeBehind="ThumbnailView_GroupTemplate.ascx.cs" Inherits="myproject.Controls.ThumbnailView_GroupTemplate" %&gt; &lt;tr&gt; &lt;asp:PlaceHolder ID="itemPlaceHolder1" runat="server" /&gt; &lt;/tr&gt; &lt;%@ Control Language="C#" AutoEventWireup="true" CodeBehind="ThumbnailView_LayoutTemplate.ascx.cs" Inherits="myproject.Controls.ThumbnailView_LayoutTemplate" %&gt; &lt;table&gt; &lt;asp:PlaceHolder ID="groupPlaceHolder1" runat="server" /&gt; &lt;/table&gt; </code></pre>
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
    1. USuser1655940
    1. USuser1655940
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. COCould you please provide the markup of ThumbnailView_LayoutTemplate.ascx?
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      1. POListview grouptemplate - code behind
      1. USGerald Degeneve
    2. COCould you please test if it works after you split your Controls.Add to add the LayoutTemplate and the Group Template separatly?
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      1. POListview grouptemplate - code behind
      1. USGerald Degeneve
    3. COYou mean create a new container for the group control? I've tried that it doesn't work... As far as I know the container is simply a name referring to the list view... I'm beginning to think this is a microsoft bug
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      1. POListview grouptemplate - code behind
      1. USuser1655940
 

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