using a RadTreeList I wonder how to hide the expand / collaps Icon when there are no records under parent item What I found within this platform ishttp://www.telerik.com/help/aspnet-ajax/grid-hide-expand-collapse-images-when-no-records.htmlbut as far as I can see this does not work for RadTreeList, doesn't it?

Please explain me how to troubleshoot following issue: 
I'm using NeedDataSource event to bind list
protected void RadTreeList2_NeedDataSource(object source, TreeListNeedDataSourceEventArgs e)
{
    DataTable dt = GetDataTable();
    RadTreeList2.DataSource = dt; 
}

In function GetDataTable() two options available:
Option 1 - get data table from execution of database request 
DataTable table = objController.GetMessages();

Option 2: Build table 'manually'
DataTable table = new DataTable();
table.Columns.Add("SubjectId", typeof(string));
table.Columns.Add("Subject", typeof(string));
table.Columns.Add("UserName", typeof(string));
table.Columns.Add("Status", typeof(string));
table.Columns.Add("Message", typeof(string));
table.Columns.Add("Date", typeof(DateTime));
table.Columns.Add("Related", typeof(string));

table.Rows.Add("e6628832-54c7-4b18-ad2e-290065bc56c3", "Subject1D", "Sent", "User1", "Body1", DateTime.Now, "");
table.Rows.Add("e6628832-54c7-4b18-ad2e-290065bc56c3", "Subject1D", "Received", "User1", "Body2", DateTime.Now, "e6628832-54c7-4b18-ad2e-290065bc56c3");

table.Rows.Add("e6628832-54ca-4b18-ad2e-290065bc56c3", "Subject2D", "Sent", "User1", "Body3", DateTime.Now, "");
table.Rows.Add("e6628832-54ca-4b18-ad2e-290065bc56c3", "Subject2D", "Received", "User1", "Body4", DateTime.Now, "e6628832-54ca-4b18-ad2e-290065bc56c3");

Both options return the same table (I compared) and show the same information in the list.
The problem is when I using Option 1, collapse/expand is not working either manually (clicking +) not programmatecally. No errors/exception fired.
This is internal RadTreeList  - not sure how to find reason for such behavior.

HTML/aspx looks like:

<telerik:RadSkinManager ID="QsfSkinManager" Skin="Default" runat="server" ShowChooser="false" />
 <telerik:RadFormDecorator ID="QsfFromDecorator" runat="server" DecoratedControls="All" EnableRoundedCorners="false" />
 <telerik:RadProgressManager runat="server" ID="RadProgressManager1" />      <div class="demo-containers">
        <telerik:RadAjaxLoadingPanel ID="RadAjaxLoadingPanel1" runat="server" MinDisplayTime="0"></telerik:RadAjaxLoadingPanel>
        <div class="demo-container">
            <h2 class="qsfSubtitle">Messages History</h2>
 <telerik:RadAjaxPanel ID="RadAjaxPanel3" LoadingPanelID="RadAjaxLoadingPanel1" runat="server">
                <telerik:RadTreeList runat="server" ID="RadTreeList2" AllowPaging="true" PageSize="5" DataKeyNames="SubjectId" ParentDataKeyNames="Related" OnNeedDataSource="RadTreeList2_NeedDataSource"
                AutoGenerateColumns="false" OnDeleteCommand="RadTreeList2_DeleteCommand"  OnItemCommand="RadTreeList2_ItemCommand"
     OnUpdateCommand="RadTreeList2_UpdateCommand" >
    <ClientSettings>
                    <ClientEvents OnItemContextMenu="demo.onItemContextMenu"  OnItemDblClick="demo.OnItemDblClick" OnItemClick="demo.OnItemClick"></ClientEvents>
                    <Selecting AllowItemSelection="True"></Selecting>
                </ClientSettings>
                <Columns>
                   <telerik:TreeListBoundColumn DataField="SubjectId" HeaderText="SubjectId" UniqueName="SubjectId">
      <ItemStyle VerticalAlign="Middle" HorizontalAlign="Left" Width="5%"/>
      <HeaderStyle HorizontalAlign="Left" Width="5%" />
     </telerik:TreeListBoundColumn>
                    <telerik:TreeListBoundColumn DataField="Subject" HeaderText="Subject" UniqueName="Subject">
      <ItemStyle VerticalAlign="Middle" HorizontalAlign="Left" Width="15%"/>
      <HeaderStyle HorizontalAlign="Left" Width="15%" />
     </telerik:TreeListBoundColumn>
                    <telerik:TreeListBoundColumn DataField="UserName" HeaderText="UserName" UniqueName="UserName">
      <ItemStyle VerticalAlign="Middle" HorizontalAlign="Left" Width="15%"/>
      <HeaderStyle HorizontalAlign="Left" Width="15%" />
     </telerik:TreeListBoundColumn>
                    <telerik:TreeListBoundColumn DataField="Status" HeaderText="Status" UniqueName="Status">
      <ItemStyle VerticalAlign="Middle" HorizontalAlign="Left" Width="10%"/>
      <HeaderStyle HorizontalAlign="Left" Width="10%" />
     </telerik:TreeListBoundColumn>
      <telerik:TreeListTemplateColumn HeaderText="Message" SortExpression="Message" UniqueName="Message">
             <ItemTemplate>
                <asp:Label runat="server" ID="lblStatus" Text='<%# Eval("Message") %>' ToolTip='<%# Eval("Message") %>'/>
             </ItemTemplate>
             <ItemStyle VerticalAlign="Middle" HorizontalAlign="Left" Width="40%" Wrap = "False" />
             <HeaderStyle HorizontalAlign="Left" Width="40%" />
         </telerik:TreeListTemplateColumn>
                    <telerik:TreeListBoundColumn DataField="Date" HeaderText="Date" UniqueName="Date">
      <ItemStyle VerticalAlign="Middle" HorizontalAlign="Left" Width="15%"/>
      <HeaderStyle HorizontalAlign="Left" Width="15%" />
     </telerik:TreeListBoundColumn>
                    <telerik:TreeListBoundColumn DataField="Related" HeaderText="Related" UniqueName="Related"></telerik:TreeListBoundColumn>
                </Columns>
                <EditFormSettings EditFormType="Template" PopUpSettings-Width="600px">
                <FormTemplate>
                    <div class="editTemplate">
                        <table>
                            <tr class="EditFormHeader">
                                <td colspan="2" style="font-size: small">
                                    <b>Reply:</b>
                                </td>
                            </tr>
                            <tr>
                                <td style="vertical-align: top">
                                    <table class="module">
                                        <tr>
                                            <td colspan = "2">
                                                <asp:TextBox ID="txtMsg" TextMode = "MultiLine" Height = "100" Width = "300" Text='<%# Eval("Message", "\n >>>>\n {0} ") %>'  runat="server">
                                                </asp:TextBox>
                                            </td>
                                        </tr>
                                        <tr>
                                            <td>
                                                <telerik:RadButton ID= "btnSend" Text = "Send" CommandName = "Update" Icon-PrimaryIconCssClass="rbOk" runat="server"/>                                            </td>
                                            <td>
                                                <telerik:RadButton ID="btnCancel" Text="Cancel" runat="server" CausesValidation="False"
                                                                                CommandName="Cancel" Icon-PrimaryIconCssClass="rbCancel" />
                                            </td>
                                        </tr>
                                    </table>
                                </td>
                             </tr>
                        </table>
                     </div>
                </FormTemplate>
                </EditFormSettings>
                 </telerik:RadTreeList>
     <telerik:RadToolTipManager ID="RadToolTipManager1" runat="server" RelativeTo="Mouse"
     Position="MiddleRight" AutoTooltipify="false" ContentScrolling="Default" Width="50"
     Height="10" />
                <telerik:RadContextMenu ID="RadContextMenu1" runat="server" OnClientItemClicked="demo.onClientItemClicked">
                <Items>
                    <telerik:RadMenuItem Text="Reply" Value="Edit"></telerik:RadMenuItem>
                    <telerik:RadMenuItem Text="Delete" Value="Delete"></telerik:RadMenuItem>
                </Items>
                </telerik:RadContextMenu>
            </telerik:RadAjaxPanel>
        </div>
    </div>

Thanks you,
Boris








 

Ok so I really like RadGrid, and now I have been using the GridHTMLEditorColumn column type more and more. One issue I am having is that i would like to add the remaining tool bars to the control so that the user has more control of the HTML. I have searched the forums and have seen some discussion, but none of the solutions have worked for me.

1. How do I add the "hidden" tools since this appears to be radeditor?
2. How can I maximize the width of the control in the RadGrid edit form?

Good day to us all.

Ryan

Is it possible to use the group by function in RadGrid also using the Skip() and Take() linq functions rather than pulling the entire table in every time?  We're currently using a grid that has 40000 rows (and up to 30 columns) and using the Group By functionality takes over 2 mins to complete, causing a timeout. 

Currently when I use GroupBy with Skip and Take, it just groups the entries in that particular view depending how the table is sorted (i.e. just those 50 rows) rather than the correct grouping as it would be over the full 40000 rows.  Is there any way to get this to work correctly?

 

Hi,

Can we customize the Progress Indicators which is shown when uploading the Files to the server? (Red, Green, Yellow one)

I want it to customize as shown in the attached image.

 

Thanks,

Varun

Two questions:

1. Is it possible to not require a click to use Batch Editing - e.g. Grid is always in edit mode? 
2. How do I insert an empty item into a GridDropDownColumn in batch mode? 

Thanks.​

Hi

I have a radgrid with insert/update/delete function available (NOT automatic but manual).  Behind my tool there is a user database with security settings.  I need to set the insert/update/delete function unavailable for the users that have no rights to do this and for the user who have right to do this the insert/update/delete function must be availabe.

My question is how do I make the functions unavailable? How can I do this in code behind?

Please advice.

Kind regards

Suzy

What is the minimum time increment on the GANTT chart control?  We need 5 min increments.

I've got a very simple page to try to start using the scheduler. At the moment all the page has on it is the scheduler.

I don't know javascript and have no script code. At the moment all I have done is create a blank form, added a scheduler control, added the radscriptmanager and radajaxmanager, in code behind loaded the datasource for the schedule and that's it.

When I run it the page is displayed and I can see, insert and edit appointments using the standard form. However, if I click options to view the advanced form I get an error:

Unhandled exception at line 23, column 5 in http://localhost:49335/ScriptResource.axd?d=nv7asgRUU0tRmHNR2D6t1FKDG35DvsT9LAUygLmmdVzKrxno8KQVmwLs8qIoJRFRSN2_iVk48PbTDpCzQFpmPsmuSwszBL8PM3oZkazX6hA33N42Fbe9eIkay7-ZsJoBG1bPh5lr6Jn8TgjwZbk5xA2&t=fffffffff11c85e00x800a1391 - JavaScript runtime error: 'Page_Validators' is undefined

The code highlighted is:

function ValidatorUpdateIsValid() {
Page_IsValid = AllValidatorsValid(Page_Validators);
}

In scriptresource.axd

 

I have a radgrid that inherits it hierarchy from a System.Data.DataSet. When I make a change I update the database from which the DataSet gets its data and rebuild the grid as this answer suggests. The first time the update always runs as expected and updates in the grid. After that after varying amount of changes( I can't seem to figure out exactly which one causes this) I get the following error:

JavaScript runtime error: Unable to get property 'get_element' of undefined or null reference

 

I hope you are able to help

 

/Casper