I have a page that has a number of complicated radgrids on it - lots of template columns, lots of eval statements, custom controls binding to properties of properties, etc. I'm already using custom paging with this, and my page size is 60 records. The underlying data source is a list of objects. It's taking something like 6 or 7 seconds just to get from the Grid DataBinding event to the Grid DataBound event. This decreases as I remove columns from my grid. 

 - I know that Microsoft mentions that Eval can be slow because it uses reflection (http://msdn.microsoft.com/en-us/library/4hx47hfe(v=vs.110).aspx), so I'm trying to find ways to avoid that. Would I get any improvement by making the grid itself pretty simple with the data in individual GridBoundColumn columns, and then doing more complicated formatting/binding in the ItemDataBound event. 

- Some of my template columns contain custom controls that bind from an object. That object is a property of the object I'm binding to the grid. Would this cause performance issues? Should my datasource be very flat rather than having nested objects? Could I store the object in the DataKey collection? I can't imagine that populating the DataKey collection with a ton of data is a very good for performance.

- Other than values that have already been bound to the grid, the only way to access underlying data in the ItemDataBound event is by storing it in the DataKey collection, right? There's no way to access the underlying object I'm binding to, right?

For reference, here is an example of one the grids:

Hi,
I try to set a search box from list

however when I put words into the search box it is not showed a drop-down (AutoComplete) list with a proper result

I'll be glad for your help

Daniel

ASPX:



VB.NET

Hi,
<telerik:RadGrid ID="rgCommnets" runat="server">
        <MasterTableView AutoGenerateColumns="false" CommandItemDisplay="None">
            <Columns>
                <telerik:GridBoundColumn DataField="Comment_ID" HeaderText="" UniqueName="Comment_ID" Display="false"></telerik:GridBoundColumn>
                <telerik:GridBoundColumn DataField="Attachment_ID" HeaderText="" UniqueName="Attachment_ID" Display="false"></telerik:GridBoundColumn>

                <telerik:GridTemplateColumn HeaderText="Title">
                    <ItemTemplate>
                        <asp:Label ID="Title" runat="server" Text='<%#DataBinder.Eval(Container.DataItem,"Title") %>'></asp:Label>
                        <asp:LinkButton runat="server" Text='<%#DataBinder.Eval(Container.DataItem,"File_Name") %>' ID="lnkAttachment" OnClick="lnkAttachment_Click"></asp:LinkButton>
                    </ItemTemplate>
                </telerik:GridTemplateColumn>
                <telerik:GridBoundColumn DataField="Title" HeaderText="Title" UniqueName="Title"></telerik:GridBoundColumn>

                <telerik:GridBoundColumn DataField="Status" HeaderText="Status" UniqueName="Status"></telerik:GridBoundColumn>
            </Columns>
            <EditFormSettings>
                <FormTemplate >
               <div class="divNarrativeComment">
                            <label>
                                Comment Title:</label>
                            <asp:TextBox ID="textbox1" runat="server" Width="658px" Height="18px"></asp:TextBox>
                            <asp:TextBox ID="textbox2" runat="server" Width="754px" Height="50px" TextMode="MultiLine"
                                CssClass="mbm"></asp:TextBox>
                            <label>
                                Attachment:</label>
                            <br class="clearLeft" />
                            <label>
                                For:</label>
                            <asp:RadioButtonList ID="RadioButtonList1" runat="server" RepeatDirection="Horizontal"
                                CssClass="rblFor">
                                <asp:ListItem>Contractor</asp:ListItem>
                                <asp:ListItem>Internal</asp:ListItem>
                            </asp:RadioButtonList>
                            <br class="clearLeft" />
                            <label>
                                Actionable item?</label><asp:CheckBox ID="CheckBox1" runat="server" Text="Yes" CssClass="rblFor chkAttachment" /><br
                                    class="clearLeft" />
                            <label>
                                Choose role:</label><telerik:RadComboBox ID="RadComboBox2" runat="server" Skin="Metro"
                                    Width="300px" CssClass="left">
                                </telerik:RadComboBox>
                            <asp:Button ID="Button2" runat="server" Text="Save" CssClass="buttons btnSearch right" />
                            <a class="lnkClear right">Discard</a><br class="clearLeft" />
                        </div>
                </FormTemplate>
            </EditFormSettings>
        </MasterTableView>

    </telerik:RadGrid>


In above code i have add <telerik:RadGrid ID="rgCommnets" runat="server">
        <MasterTableView AutoGenerateColumns="false" CommandItemDisplay="None">
            <Columns>
                <telerik:GridBoundColumn DataField="Comment_ID" HeaderText="" UniqueName="Comment_ID" Display="false"></telerik:GridBoundColumn>
                <telerik:GridBoundColumn DataField="Attachment_ID" HeaderText="" UniqueName="Attachment_ID" Display="false"></telerik:GridBoundColumn>

                <telerik:GridTemplateColumn HeaderText="Title">
                    <ItemTemplate>
                        <asp:Label ID="Title" runat="server" Text='<%#DataBinder.Eval(Container.DataItem,"Title") %>'></asp:Label>
                        <asp:LinkButton runat="server" Text='<%#DataBinder.Eval(Container.DataItem,"File_Name") %>' ID="lnkAttachment" OnClick="lnkAttachment_Click"></asp:LinkButton>
                    </ItemTemplate>
                </telerik:GridTemplateColumn>
                <telerik:GridBoundColumn DataField="Title" HeaderText="Title" UniqueName="Title"></telerik:GridBoundColumn>

                <telerik:GridBoundColumn DataField="Status" HeaderText="Status" UniqueName="Status"></telerik:GridBoundColumn>
            </Columns>
            <EditFormSettings>
                <FormTemplate >
               <div class="divNarrativeComment">
                            <label>
                                Comment Title:</label>
                            <asp:TextBox ID="textbox1" runat="server" Width="658px" Height="18px"></asp:TextBox>
                            <asp:TextBox ID="textbox2" runat="server" Width="754px" Height="50px" TextMode="MultiLine"
                                CssClass="mbm"></asp:TextBox>
                            <label>
                                Attachment:</label>
                            <br class="clearLeft" />
                            <label>
                                For:</label>
                            <asp:RadioButtonList ID="RadioButtonList1" runat="server" RepeatDirection="Horizontal"
                                CssClass="rblFor">
                                <asp:ListItem>Contractor</asp:ListItem>
                                <asp:ListItem>Internal</asp:ListItem>
                            </asp:RadioButtonList>
                            <br class="clearLeft" />
                            <label>
                                Actionable item?</label><asp:CheckBox ID="CheckBox1" runat="server" Text="Yes" CssClass="rblFor chkAttachment" /><br
                                    class="clearLeft" />
                            <label>
                                Choose role:</label><telerik:RadComboBox ID="RadComboBox2" runat="server" Skin="Metro"
                                    Width="300px" CssClass="left">
                                </telerik:RadComboBox>
                            <asp:Button ID="Button2" runat="server" Text="Save" CssClass="buttons btnSearch right" />
                            <a class="lnkClear right">Discard</a><br class="clearLeft" />
                        </div>
                </FormTemplate>
            </EditFormSettings>
        </MasterTableView>

    </telerik:RadGrid>

In above code i have add EditFormSettings for add and edit row and now i want to open it on asp button click.

Thanks
Manish

I have a Radgrid with Inline Edit Mode. There are 8 columns in it, and if value of Product column is "XVZ", the edit button should not be visible. How can I achieve this?

We use the RadGrid extensively throughout our system, and, with simple datasets, it works great, even with a lot of data. However, we have one page with a series of complicated radgrids - lots of data, lots of template columns, lots of eval statements, and a number of custom controls that bind data from an object property. We're experiencing major performance problems with these grids. I added a number of debug statements and it's taking 6-7 or even 10+ seconds to bind the grid (timestamps between the Grid DataBinding and DataBound events). We're already using custom paging, and our page size is 60 records. I'm trying to find ways to improve this performance, and would welcome any suggestions:

- Would it be better to bind to a flat collection of data? That is, rather than passing an object property using eval to a custom control which then pulls out properties of that object, flatten each property in the underlying data item. So instead of 5 AlternateSource objects, flatten it to AlternateSource1DataSource, AlternateSource1Price, AlternateSource2DataSource, AlternateSource2Price, etc. Basically binding to a DataRow rather than a custom object.

- Microsoft says that the Eval Method can slow performance because it reflection at run time (http://msdn.microsoft.com/en-us/library/4hx47hfe(v=vs.110).aspx). Should I use as many GridBoundColumns as I can and bind data in the template columns on the ItemDataBound event, rather than using Eval in the aspx file? This means I would need a bunch of GridBoundColumns set to display hidden to get the data in the event, which is tedious. Or stuff the data into the DataKey collection. It also means I can't do much binding with a sub-object in the itemdatabound event.

- What's the performance impact of putting a lot of data into the DataKey collection? Is there any other way to access to the direct directly in the ItemDataBound event. I'm fairly certain you can't access the underlying data object in the ItemDataBound event. Is that correct?


For reference, here's an example of one of our grids:

Hi,

I am using RadEditor to display my content from database. On a client side button click event, i should know whether the content in the editor been modified or not. I have used the following code which is working when user tries to add/modify the content using key input. But same was not  working when user drags and drops the content in the editor. I have used mousedown event but it is not firing.

I have taken variable"hdnIsContentChange" which is initially set to false, when user tries to modify the data i am comparing the intial content of the editor with new value which i put in hidden variables.

"onkeyup" is the only event is working, the rest are all not working.

var hdnIsContentChange = false;
function Editor_OnClientLoad(Editor, args)
{
        Editor.attachEventHandler ("onmouseup", ContentChange);  //not working
        Editor.attachEventHandler ("onmousedown", ContentChange);//not working
        Editor.attachEventHandler ("ondrag", ContentChange);//not working
        Editor.attachEventHandler ("onchange", ContentChange);//not working
        Editor.attachEventHandler ("onkeyup", ContentChange);//working
       
        function ContentChange()
        {
            $get("hdnNewContent").value = radEditor.get_html();
            
             if($get("hdnInitialContent").value != $get("hdnNewContent").value)
                    get("hdnIsContentChange").value = true;
       }
 }

Please let me whether this approach is correct or already is there any way to know the content been modified by using editor's built-in functions or properties.

Hi,

I currently have the ASP.NET version of the RadSpell, which uses the Telerik.Web.UI.dll. This is currently used in an exsiting website.

The site is in the process of being upgraded to use MVC, and we want to use the RadSpell functionality.

I have created an .ascx to contain the RadSpellChecker and made some modiications to the web.config file which you can see below. The ascx loads fine in a Html.Partial().

However when javascript hits the startSpellCheck(); I get the following error :

Object doesn't support this property or method

How can I get this working?

ASCX file:

My web.config contains the following:

HttpHandlers:

Handlers:

Thanks

I'm having an issue with multi-day appointments that span the date on which Greenwich Mean Time (GMT) changes to British Summer Time (BST).

The attached screenshots show:

1. The creation of an all day appointment which starts on 24th March 2014 and ends on 6th April 2014
2. A Week view for the Week Commencing 24th March
3. A Week view for the Week Commencing 31st March
4. A Month View for March
5. A Month View for April
6. The record from the Appointments table (in SQL)

GMT changes to BST on Sunday 30th March.

Note that, in the Week view for the Week Commencing 24th March, the appointment does not display for Sunday 30th March but in the Month View for March, it does.

The RadScheduler control is defined as follows in the markup:

            <telerik:RadScheduler ID="RadScheduler1" runat="server" DataSourceID="AppointmentsDataSource" DataKeyField="ID" DataSubjectField="Subject" DataDescriptionField="Description" DataStartField="Start" DataEndField="End" Culture="en-GB" FirstDayOfWeek="Monday" LastDayOfWeek="Sunday" SelectedView="WeekView" DisplayRecurrenceActionDialogOnMove="false" EnableExactTimeRendering="True" MinutesPerRow="150" TimeZoneID="GMT Standard Time" DayStartTime="08:00:00" DayEndTime="18:00:00" WorkDayStartTime="08:00:00" WorkDayEndTime="18:00:00" EnableDescriptionField="True" HoursPanelTimeFormat="HH:mm" OverflowBehavior="Expand" RenderMode="Auto" StartInsertingInAdvancedForm="True" DataReminderField="Reminder" ResolvedRenderMode="Classic" Localization-ContextMenuAddAppointment="New Absence or On Call Entry" ShowFooter="False" AppointmentStyleMode="Default" RowHeight="35px" CustomAttributeNames="CreatedBy, CreatedDate, LastModifiedBy, LastModifiedDate" TimeZoneOffset="01:00:00">

                <ExportSettings>

                    <Pdf PageBottomMargin="1in" PageLeftMargin="1in" PageRightMargin="1in" PageTopMargin="1in" />

                </ExportSettings>

                <AdvancedForm Modal="True" TimeFormat="HH:mm" DateFormat="dd/MM/yyyy" Width="90%"></AdvancedForm>

                <WeekView DayStartTime="08:00:00" DayEndTime="18:00:00" WorkDayStartTime="08:00:00" WorkDayEndTime="18:00:00" EnableExactTimeRendering="True" ColumnHeaderDateFormat="dddd dd MMMM yyyy"></WeekView>

                <DayView DayStartTime="08:00:00" DayEndTime="18:00:00" WorkDayStartTime="08:00:00" WorkDayEndTime="18:00:00" EnableExactTimeRendering="True"></DayView>

                <MultiDayView DayStartTime="08:00:00" DayEndTime="18:00:00" WorkDayStartTime="08:00:00" WorkDayEndTime="18:00:00" EnableExactTimeRendering="True" />

                <MonthView HeaderDateFormat="MMMM, yyyy" FirstDayHeaderDateFormat="dd MMMM" AdaptiveRowHeight="True" VisibleAppointmentsPerDay="25"></MonthView>

                <TimelineView UserSelectable="False" />

                <AgendaView UserSelectable="True" ResourceMarkerType="None" ReadOnly="True" ShowResourceHeaders="False" />

                <TimeSlotContextMenus>

                    <telerik:RadSchedulerContextMenu>

                        <Items>

                            <telerik:RadMenuItem Text="New Absence or On Call Entry" Value="CommandAddAppointment"></telerik:RadMenuItem>

                            <telerik:RadMenuItem Text="Go to Today" Value="CommandGoToToday"></telerik:RadMenuItem>

                        </Items>

                    </telerik:RadSchedulerContextMenu>

                </TimeSlotContextMenus>

                <ResourceTypes>

                    <telerik:ResourceType KeyField="ID" Name="Category" TextField="Category" ForeignKeyField="CategoryID" DataSourceID="CategoriesDataSource"></telerik:ResourceType>

                </ResourceTypes>

                <AppointmentTemplate>

                    <div style="position:relative;top:4px">

                        <%# Eval("Subject") & " (" & Eval("Category.Text") & ")"%>

                    </div>

                </AppointmentTemplate>

                <AdvancedEditTemplate>

                    <scheduler:AdvancedForm runat="server" ID="AdvancedEditForm1" Mode="Edit" Subject='<%# Bind("Subject") %>' Description='<%# Bind("Description") %>' Start='<%# Bind("Start") %>' End='<%# Bind("End") %>' CategoryID='<%# Bind("Category") %>' />

                </AdvancedEditTemplate>

                <AdvancedInsertTemplate>

                    <scheduler:AdvancedForm runat="server" ID="AdvancedInsertForm1" Mode="Insert" Subject='<%# Bind("Subject") %>' Start='<%# Bind("Start") %>' End='<%# Bind("End") %>' Description='<%# Bind("Description") %>' CategoryID='<%# Bind("Category") %>' />

                </AdvancedInsertTemplate>

                <TimeSlotContextMenuSettings EnableDefault="true"></TimeSlotContextMenuSettings>

                <AppointmentContextMenuSettings EnableDefault="true"></AppointmentContextMenuSettings>

            </telerik:RadScheduler>

Please could you advise what the problem might be.

I have a page that sits inside a master page so I do not have a body to do an onload statement, by research everyone says use the registerstartUpscript and it will work, however it is not.  How can I call a radwindow on page load from a page nested in a master site.  Thanks

I'm excited to see what we are going to be able to do with this control in the future, but it seems like it needs a bit of refinement to make it to prime time.

I am wondering how to disable the creation and use of the freaking LoadingPanel.  I am using ImageGallery with LoopItems="true", and have nice animations defined, but the transitions are absolutely jarring because a LoadingPanel appears for a split second before every animation. Since the gallery is set to loop, and it has loaded all of it's images, there is absolutely no reason for a loading panel to be displayed at all. Since I didn't add it, I don't see why it would be there at all, either. The panel is displayed momentarily if you press the next or previous image buttons, as well. You can actually see it on your demo pages quite clearly.

As far as I'm concerned, the fact that it tries to show the LoadingPanel for an image that is available is a bug.

I tried setting RadImageGallery.LoadingPanel.Enabled = false, but that doesn't do anything. Setting RadImageGallery.LoadingPanel.Visiable = false breaks the slideshow altogether.  I tried RadImageGallery.LoadingPanel.Controls.Clear() and that does nothing ether. How can I get rid of it?

Joel