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RadTree View inside combobox doesnt display the gridlines

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ComboBox

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6 Answers, 1 is accepted

answered on 20 Apr 2010, 10:27 AM

Hello Yana,

I am doing this in my local environment. I can provide u the below details.

Radcombo Tag in a usercontrol added dynamically in a page view by clicking add new custom command button of radgrid.

<telerik:RadComboBox ID="rcbAttendeeType" runat="server" EmptyMessage="Select Attendee Type" Skin="Sunset"

AutoPostBack="true" ShowToggleImage="True" Style="vertical-align: middle;" OnClientDropDownOpened="OnClientDropDownOpenedHandler"

HighlightTemplatedItems="false" OnClientDropDownClosed="onDropDownClosing" TabIndex="28">

<telerik:RadTreeView ShowLineImages="true" runat="server" ID="rtvAttendeeType" EnableAjaxSkinRendering="true"

Skin="Sunset" EnableEmbeddedSkins="true" EnableViewState="true" CheckBoxes="false"

Height="100%" OnClientNodeClicking="nodeClicking" OnNodeClick="rtvAttendeeType_NodeClick">

<telerik:RadTreeNodeBinding Expanded="True" />

</DataBindings>

</telerik:RadTreeView>

</div>

</ItemTemplate>

<Items>

<telerik:RadComboBoxItem Text="" />

</Items>

</telerik:RadComboBox>

On preRender event of the page I have code that bind the tree as below

if (rcbAttendeeType.Items != null && rcbAttendeeType.Items.Count >= 0)

{

Telerik.Web.UI.

RadTreeView rtvAT = rcbAttendeeType.Items[0].FindControl("rtvAttendeeType") as Telerik.Web.UI.RadTreeView;

if (this.Parent.Page.Request.Url.AbsolutePath.Contains("ShowAttendees.aspx")

this.Parent.Page.Request.Url.AbsolutePath.Contains("OnlineRegistration.aspx"))

{

IEnumerable<epp2ClientPL.AttendeeTypesProperties> attendeeTypes = Common.LoadAttendeeTypes(EventId);

attendeeTypes =

from attTypes in attendeeTypes

where attTypes.VisibleToPublic.Equals(true)

select attTypes;

rtvAT.DataTextField =

"Name";

rtvAT.DataValueField =

"Id";

rtvAT.DataFieldID =

"Id";

rtvAT.DataFieldParentID =

"ParentId";

rtvAT.DataSource = attendeeTypes;

rtvAT.DataBind();

}

else

{

Common.LoadAttendeeTree(rtvAT, EventId);

}

rcbAttendeeType.Items[0].Text =

"--- Select Attendee Type ---";

rcbAttendeeType.Items[0].Value = epp2ClientPL.

Common.GUID_DEFAULT;

}

ddsfdfdf

answered on 22 Apr 2010, 02:15 PM

combouc.zip

Hi Ravi Keshwani,

I've attached my test pages (based on your code) to demonstrate that the images can be seen. What am I missing?

Greetings,
Yana
the Telerik team

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answered on 23 Apr 2010, 05:21 AM

Hi yana,

"This is not working in IE8" working fine in opera and firefox.

Thanks for the reply. I have run the code u have sent its working fine. But if you see my scenario is something different.
First of all I am following "TabStrip / Load on Demand RadPageView" sample.
In a page I have loaded a usercontrol dynamically which is having a radgrid with a custom toolbar with a button.
Clicking on this button loads another usercontrol dynamically in a pageview.
The radcombo with radtree inside it is also binded in the prerender event of the usercontrol added dynamically.

Below code will be useful to reproduce this issue.

protected void RadTabStrip1_TabClick(object sender, RadTabStripEventArgs e)

{

AddPageView(e.Tab);

e.Tab.PageView.Selected =

true;
}

public void AddPageView(RadTab tab)

{

RadPageView pageView = new RadPageView();

pageView.ID = tab.Value;

RadMultiPage1.PageViews.Add(pageView);

pageView.CssClass =

"pageView";

tab.PageViewID = pageView.ID;
}

protected void RadMultiPage1_PageViewCreated(object sender, RadMultiPageEventArgs e)

{

string userControlName = "UserControls/"+e.PageView.ID + ".ascx";

Control userControl = Page.LoadControl(userControlName);

userControl.ID = e.PageView.ID +

"_userControl";

e.PageView.Controls.Add(userControl);

}

protected

override void OnPreRender(EventArgs e)

{

base.OnPreRender(e);

    if (rcbAttendeeType.Items != null && rcbAttendeeType.Items.Count >= 0)
                    {
                        Telerik.Web.UI.RadTreeView rtvAT = rcbAttendeeType.Items[0].FindControl("rtvAttendeeType") as Telerik.Web.UI.RadTreeView;

                        string attendeeTypeId = CurrentUser.AttendeeTypeId != null ? CurrentUser.AttendeeTypeId.ToString() : string.Empty;
                        if (rtvAT.Nodes != null && rtvAT.Nodes.Count > 0 && attendeeTypeId.Length > 0)
                        {
                            Telerik.Web.UI.RadTreeNode node = rtvAT.FindNodeByValue(attendeeTypeId);

                            if (node != null && node.Text.Length > 0)
                            {
                                rcbAttendeeType.Items[0].Text = node.Text;
                                rcbAttendeeType.Items[0].Value = node.Value;

                                rtvAT.FindNodeByText(node.Text).Selected = true;
                            }
                        }
                    }

}