I have been trying to programmatically add a RequiredFieldValidator to an auto-generated GridDropDownColumn, but have been unsuccessful.  

Has anyone tried doing this, and if so could you provider any pointers.

I have 2 use cases:

1. Dropdown is pre-populated with values.  First being a "Please select a choice" item.   By not setting a selected value this is the default value, and I want to verify that a different choice has been made.
2. Dropdown list has no items in it, and I do not want to allow an insert/update to happen in this case.

Thanks in advanced for any help.

-Steve

Hi ,

I have one telerik modal popup window in which I am loading some event, after session timeout occurs, page in the modal pop window redirects to login page.

What I want achieve is, On session Expiration modal window should disappear and parent page should be redirected to login page.

Any views on this.... attached is the snap?

Hi,
I have an issue when running RadGrid in IE8 where the columns are not aligned properly when I group on one or more columns.  When I don't have any grouping in the grid, then the column headers are aligned correctly with the rows.  See Screenshot 01.jpg.  However, if I put a column in the 'group by' then the column headers are off.  See Screenshot 02.jpg.  Please advise if anyone has seen this before and if there is a resolution.

Hello team,
 

We are using radeditor control for Viewing files and Images on server path through Image Manager and Document Manager link .
Now , I want to view these files through another controls i.e- ellipse button ,
 so for this i see the demo of " FileExplorer - File Selector Dialog " on link http://demos.telerik.com/aspnet-ajax/fileexplorer/examples/client-sideapi/fileselectordialog/defaultcs.aspx

its good, but my requirement is that i want to implement with ellipse button, how can i change the look of FileExplorer - File Selector Dialog control. i have attached my image for browsing files.
Thanks in advance.

Hi Guys,

I have a rad rotator in a rad notification. This rad notification is included in a panel which can be updated after an ajax request. If so, the radrotator is not displaying the content anymore.
i saw that 
http://www.telerik.com/help/aspnet-ajax/rotator-coverflow-animation-and-ajax.html
saying you need to register the script in the code behind.

I have not been able to translate my parameters to have a persistent radrotator. Could you please help me? here is my radrotator:


Thank you
Gregory

Hi,

Bit of a long shot this, but here we go. It's more of a generic Javascript issue than a problem with the Telerik controls, although I am using the controls.

I have a problem where when I try to $find a telerik control in an ASP.NET user control it is always returned as null. However, if I $get this control using the same ID then a HTML Input Object is returned. I've tried using the $find function on a stand alone page and it works fine with either:


The ID of the control I am looking for is rendered like this in the HTML:

ctl00_ucRTKTemplate_ctl04_ctl00_cmFileView

ucRTKTemplate being an ASP.NET user control that loads another ASP.NET user control that contains the Telerik context menu I am attempting to find. If I type the above ID directly into the $find function then I do find the control, but obviously I would like to be able to find this control dynamically.

Any ideas?

Thanks,

Michael

Hi,
    I got licensed version of 2013 Rad Grid. While it works fine in a test project. When I use the same demo code, On databind, in my application, I get an exception like below. I checked and rechecked any differences between the demo project and my application. There seems to be no difference at all. I used the same dummy datasource like in the Demo project, still I get the error. Any help is appreciated.

Telerik.Web.UI.ParseException: Syntax error '#'    at Telerik.Web.UI.ExpressionParser.NextToken()     at Telerik.Web.UI.ExpressionParser..ctor(ParameterExpression[] parameters, String expression, Object[] values)     at Telerik.Web.UI.DynamicExpression.ParseLambda(ParameterExpression[] parameters, Type resultType, String expression, Object[] values)     at Telerik.Web.UI.DynamicExpression.ParseLambda(Type itType, Type resultType, String expression, Object[] values)     at Telerik.Web.UI.GridDynamicQueryable.Where(IQueryable source, String predicate, Object[] values)     at Telerik.Web.UI.GridDataTableFromEnumerable.FillData35()     at Telerik.Web.UI.GridDataTableFromEnumerable.FillData()     at Telerik.Web.UI.GridResolveEnumerable.Initialize()     at Telerik.Web.UI.GridResolveEnumerable.EnsureInitialized()     at Telerik.Web.UI.GridEnumerableFromDataView..ctor(GridTableView owner, DataView dataView, Boolean autoGenerateColumns, GridColumnCollection presentColumns, String[] additionalField, Boolean retrieveAllFields, Boolean enableSplitHeaderText)     at Telerik.Web.UI.GridDataSourceHelper.CreateGridEnumerable(GridTableView owner, IEnumerable enumerable, Boolean caseSensitive, Boolean autoGenerateColumns, GridColumnCollection presentColumns, String[] additionalField, Boolean retrieveAllFields, Boolean enableSplitHeaderText)     at Telerik.Web.UI.GridDataSourceHelper.GetResolvedDataSource(GridTableView owner, Object dataSource, String dataMember, Boolean caseSensitive, Boolean autoGenerateColumns, GridColumnCollection presentColumns, String[] additionalField, Boolean retrieveAllFields, Boolean enableSplitHeaderText)     at Telerik.Web.UI.GridTableView.get_ResolvedDataSource()     at Telerik.Web.UI.GridTableView.CreateChildControls(IEnumerable dataSource, Boolean useDataSource)     at System.Web.UI.WebControls.CompositeDataBoundControl.PerformDataBinding(IEnumerable data)     at System.Web.UI.WebControls.DataBoundControl.OnDataSourceViewSelectCallback(IEnumerable data)     at System.Web.UI.DataSourceView.Select(DataSourceSelectArguments arguments, DataSourceViewSelectCallback callback)     at System.Web.UI.WebControls.DataBoundControl.PerformSelect()     at Telerik.Web.UI.GridTableView.PerformSelect()     at System.Web.UI.WebControls.BaseDataBoundControl.DataBind()     at Telerik.Web.UI.GridTableView.DataBind()     at Telerik.Web.UI.RadGrid.DataBind()     at Telerik.Web.UI.RadGrid.AutoDataBind(GridRebindReason rebindReason)     at Telerik.Web.UI.RadGrid.OnLoad(EventArgs e)     at System.Web.UI.Control.LoadRecursive()     at System.Web.UI.Control.LoadRecursive()     at System.Web.UI.Control.LoadRecursive()     at System.Web.UI.Control.LoadRecursive()     at System.Web.UI.Control.LoadRecursive()     at System.Web.UI.Control.LoadRecursive()     at System.Web.UI.Control.LoadRecursive()     at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

I have a RadNumericTextBox in a RadGrid.  I'm using the OnClientValueChanging event to validate the numeric value (I have to do a calculation).  It works great, except when I'm editing in the RadGrid, and I change the value to an undesired value, and I click the Update ImageButton, the OnClientValueChanging event is not raised.  It just posts back and updates the row.

Any idea how I can raise the OnClientValueChanging event before the Update button posts back?

Hi,

I using getElementPosition() method of RadTimePicker client side api. After I update version to (2013.1.220.45 ) I get an error showing that  method does not exist for the object object. Then I tried to use getLocation() method but errors still the same. Can anybody help me how to solve that errors?

In ASPX
(
 <telerik:RadDatePicker ID="RadDatePicker1" DateInput-DateFormat="dd/MM/yyyy" Style="display: none;" MinDate="01/01/1900" MaxDate="12/31/2100" runat="server">
                <ClientEvents OnDateSelected="dateSelected" />
            </telerik:RadDatePicker>
            <telerik:RadGrid ID="grdHoliday" EnableViewState="true" runat="server" OnNeedDataSource="grdHoliday_NeedDataSource">
                <MasterTableView AutoGenerateColumns="False" DataKeyNames="HolidayKey" ClientDataKeyNames="HolidayKey">
                    <Columns>
                        <telerik:GridBoundColumn  DataField="HolidayKey" Display="false" ></telerik:GridBoundColumn>
                        <telerik:GridTemplateColumn HeaderText="Holiday" UniqueName="Holiday1" SortExpression="Holiday1">
                            <ItemTemplate>
                                <asp:TextBox ID="txtHoliday" Width="100%" runat="server" Text='<%#DataBinder.Eval(Container, "DataItem.Holiday1")%>'></asp:TextBox>
                            </ItemTemplate>
                            <HeaderStyle Width="70%" />
                        </telerik:GridTemplateColumn>
                        <telerik:GridTemplateColumn HeaderText="HolidayDate" UniqueName="HolidayDate" SortExpression="HolidayDate">
                            <ItemTemplate>
                                <asp:TextBox ID="TextBox1" Width="100px" Text='<%# Eval("HolidayDate", "{0:dd/MM/yyyy}") %>'  runat="server"
                                             onclick="showPopup(this, event);" onfocus="showPopup(this, event);" onblur="parseDate(this, event)">
                                </asp:TextBox>
                                <asp:Image ID="popupImage" runat="server" ImageUrl="../Contents/Images/datePickerPopup.gif" 
                                           AlternateText="Click to open Calendar popup" onclick="showPopup(this, event)" />
                            </ItemTemplate>
                            <HeaderStyle Width="30%" />
                        </telerik:GridTemplateColumn>
                    </Columns>
                    <CommandItemStyle />
                </MasterTableView>
                <ClientSettings>
                    <Selecting AllowRowSelect="true" />
                    <Scrolling AllowScroll="True" UseStaticHeaders="True"   ScrollHeight="450px"
                               SaveScrollPosition="true" FrozenColumnsCount="1" >
                    </Scrolling>
                </ClientSettings>
            </telerik:RadGrid>
)

In Script
(
  var currentTextBox = null;
            var currentDatePicker = null;

            function showPopup(sender, e) {
                currentTextBox = sender.tagName == "INPUT" ? sender : $telerik.getPreviousHtmlNode(sender);
                var datePicker = $find("<%= RadDatePicker1.ClientID %>");
                currentDatePicker = datePicker;
                datePicker.set_selectedDate(currentDatePicker.get_dateInput().parseDate(currentTextBox.value));
                //var position = datePicker.getElementPosition(currentTextBox);
                var position = datePicker.getLocation(currentTextBox);
                datePicker.showPopup(position.x, position.y + currentTextBox.offsetHeight);
            }
            function dateSelected(sender, args) {
                if (currentTextBox != null) {
                    currentTextBox.value = args.get_newValue();
                    TextBoxChanged(currentTextBox);
                }
            }
            function parseDate(sender, e) {
                if (currentDatePicker != null) {
                    var date = currentDatePicker.get_dateInput().parseDate(sender.value);
                    var dateInput = currentDatePicker.get_dateInput();

                    if (date == null) {
                        date = currentDatePicker.get_selectedDate();
                    }
                    var formattedDate = dateInput.get_dateFormatInfo().FormatDate(date, dateInput.get_displayDateFormat());
                    sender.value = formattedDate;
                }
            }
)

Thanks & Best Regards
HAN

Hello,

I'm using a client template in a search box. The box is bound to a web service and the template looks like this:

Things are working just fine in Chrome and IE but, in Firefox, I'm getting an error in firebug that the DataItem is not defined:

Sys.InvalidOperationException: Sys.InvalidOperationException: Error rendering template: DataItem is not defined. There's no reason why the web service would return the dataitem for Chrome and IE but not firefox... right?

Any ideas?

Thanks,

Mike