Hi,

We  are using Telerik TreeView in which checkbox have been added. When we enter the space bar, check box is not checked.
But when we enter three times space bar then checkbox will be checked.
The same scenario, when we trying to simple WPF tree view control all working as well. But in Telerik Treeview we have noticed, while entering the space bar in first hit Index will be focused, in second hit focus will be lost and when we enter third time space, the checkbox will be checked.
NOTE: In our treeview control have not child items of their parents.
 I have tried lots but no effect....

Please help Is it either Telerik Treeview issue or we are missing something.

I use ObservableCollection<XElement> as ItemsSource. I found that the Group Panel does not accept selected column headers. Is there any possibilities that i can still use XElement as DataSource.

When I update Itemssource about 300ms to add one point to ScatterLine,but when add A few minutes，the view occurred some  block，
could you Have Solution？

Hi ,
Am using a RadGridview control to populate my data and using the ElementExporting event to customize the data while exporting to Excel.

My customization need goes like, I want to add some metadata(some info the grid like report name, date generated, owner etc , at the top A1 cell ) to the grid data that is getting exporting . beneat that my actual grid data should be shown, and it should be sorted as my need.
I could able to append the metadata using the

grdRiskClarityReport.Export(stream,

new GridViewExportOptions()

{

Format=

ExportFormat.Html,

ShowColumnHeaders =

true,

ShowColumnFooters =

true,

ShowGroupFooters =

false,

});

and my event goes like this,

private void grdRiskClarityReport_ElementExported(object sender, GridViewElementExportedEventArgs e)

{

if (e.Element == ExportElement.HeaderCell && temp== 0)

{

// if (obj != null)

{

e.Writer.Write(

String.Format(@"<tr><td style=""background-color:#CCC;"" colspan=""{0}"">","dfdfd"));

e.Writer.Write(

String.Format(@"<b>Proposal Name:</b> {0} <br />", "dfdfd")); //need to input properdata

e.Writer.Write(

String.Format(@"<b>Proposal Status:</b> {0} <br />", "dfdfd"));

e.Writer.Write(

"</td></tr>");

temp = 1;

// using the restrict the metadata to the first cell

}

}

}

Could you please provide me a sample in wpf version that serves my need ?


Thanks in advance,
Srinivas J

Hi,

I am using the Virtual Queryable Collection View with the telerik Grid Views. When I scroll using the Mouse Wheel and the Scroll Direction is Down it calls the Items Loading event which lets me fetch the next set of view models; However when the scroll direction is UP using the Mouse Wheel I would like to load the set of View Models which are above the current item. This will avoid firing the Items Loading event for every single Item when scrolling UP using the Mouse Wheel.


Please refer the image file attached for more details.

Thanks,
PD.

I am somewhat new to WPF and styling, but I understand most of the basics.

I have managed to modify the expander as well as a few other items.

But one simple thing has escaped me - styling the foreground of the RadTreeViewItem.

This:
<Style TargetType="{x:Type telerik:RadTreeViewItem}">
   <Setter Property="Foreground" Value="#ffff0000"/>
</Style>
is not only not setting the font color, but no items show up.

Any help?  I'm sure it's simple.

Also, I second the suggestion for more examples and perhaps more documentation.

This is my favorite page: http://www.telerik.com/help/wpf/radtreeview-structure.html

Thanks!

Running the latest 2013 version.

I read this:
http://www.telerik.com/help/wpf/radgridview-performance-tips-tricks.html

And it makes sense that a large dataset should be time consuming...
"Binding large dataset to the RadGridView is a time consuming task that can at times test the user’s patience."

I'm binding to 10 items and it takes 62 milliseconds (measured from DataLoading to DataLoaded). However, the control takes around a second to display the items. This makes no sense at all. I have bound to a simple data item with simple dependency properties:

<Window x:Class="Vironova.MiniTem.Views.MyTableWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"
        Title="MyTableWindow" Height="700" Width="300">
        <telerik:RadGridView x:Name="radGridView" Width="Auto" Height="Auto" AutoGenerateColumns="False" ItemsSource="{Binding MyViewModel.MyObjects}" SelectionMode="Multiple" DataLoadMode="Asynchronous">
            <telerik:RadGridView.Columns>
                <telerik:GridViewDataColumn DataMemberBinding="{Binding MyType}" Header="Type"/>
                <telerik:GridViewDataColumn DataFormatString="F1" DataMemberBinding="{Binding Value}" Header="Value"/>
            </telerik:RadGridView.Columns>   
        </telerik:RadGridView>
</Window>

MyObjects is an ObservableCollection<>.

Also, when scrolling this list of items (setting the height to a lower value) it lags.

What could be causing this?

UPDATE: I just realized that all filter functions seem to clear the list. If I sort on the first column, the items go away. I then have to click two times until the sort arrow disappears - then the items are re-populated (after a second of wait).

I was trying to get the "Databinding" tab control demo working that allows you to dynamically add and remove tabs, and I don't see how to set the content for the currently selected tab. This is what I would like to do.

I have a search button. When I press the search button, I want to be able to dynamically add content to the selected tab. The content should remain when the user switches tabs as well(I am assuming for this I just need to set the IsContentPerserved flag). I would like to be able to do this in the code-behind, as I am pulling data with entity framework to populate a user control, which I will then put in the selected tab. How would I do this? Thank you.

Hi.

I'm struggling to fit the PivotGrid to my use case and can't seem to find any relevant example.
Basically, I have two group levels, let's say Product Category (first level) and then Product Name (second level, with each category containing one or more products). The Product Sale Amount is the numeric value I need to group on (Sum). The columns of the pivot will be the sale dates, in months. The problem is that products could be in different currencies, but each product is always in the same currency.
Would it be possible to have the Level 2 as "Product Name" + "Currency", as two adjacent columns? I can get the currency as a third level but that is not ideal since I need to unnecessarily expand an extra level.
Also, since it would be incorrect to sum amounts in different currencies, would it be possible to remove (or hide) the "Grand Total" column for Level 1 only?

Many thanks
Domenico

Hi,

The default color with Expression DarkTheme is hard to see, how can I easy change that?