Questions on UI for WPF Forum

7 answers

358 views

ObservableCollection<T> - filter not applying to grid

Hi Telerik,

It seems to me the RadDataGrid is not updating it self when applying a filter to its datasource of type ObservableCollection<T>:

I've tried the same code - just using the standard ListBox - and that works as expected.
The filter is applied and the listbox is updated to only show the items that apply to the filter - but that doesn't work for the RadDataGrid:

Here's a little code example:

    
            //_availableOnBoardSalesProducts is of the type ObservableCollection<Products>  
        
            gridFood.ItemsSource = _availableOnBoardSalesProducts;  
        
            myListBox.ItemsSource = _availableOnBoardSalesProducts;  
        
            //Add an item to the ObservableCollection works fine in the RadDataGrid  
        
                    private void Button_Click(object sender, RoutedEventArgs e)  
        
                    {  
        
                        _availableOnBoardSalesProducts.Add(new OnboardSalesService.Products() { Price = 10m, Description = "MyDesc", Category = "MyCat" });  
        
                    }  
        
            //But applying a filter only works fine for the standard ListBox - not for the RadDataGrid  
        
                    private void Button_Click_1(object sender, RoutedEventArgs e)  
        
                    {  
        
                        ICollectionView view = CollectionViewSource.GetDefaultView(gridFood.ItemsSource);  
        
                        if (view.Filter == null)  
        
                        {  
        
                            view.Filter = delegate(object item)  
        
                            {  
        
                                bool result = ((OnboardSalesService.Products)item).Price == 10m;  
        
                                return result;  
        
                            };  
        
                        }  
        
                        else 
        
                        {  
        
                            view.Filter = null;  
        
                        }  
        
                    }

Thats a bug right?

I've also noticed that you have an Telerik.Windows.Controls.Core.RadObservableCollection<T> available.
Whats that for?

General Discussions

answered on 25 Mar 2011

1 answer

64 views

Best way to show duplicate of radialGauge

Hello,

I have 8small different radial gauges on the same screen of my application. Now I when someone clicks on one of them I want that gauge to be vieuwed in an enlarged version on the side, but still have the origonal visable.

What would be the best way to accomplish this, because there is no copy function.

With Kind regards,
Kevin

Gauges

answered on 25 Mar 2011

3 answers

75 views

2D scattered/point sample

Hi,
I am new to telerik charting. I have a list of nodes having x and y values between -1.5 -1.5 on both x and y axis
Can you please send me any sample, how can i map my points and set x and y axis values. Thanks

Chart

answered on 25 Mar 2011

2 answers

259 views

RowIndicatorVisibility

Hi Guys,

In the RadGridView, I have set the RowVisibilityIndicator="Collapsed". But there's a tiny gap on the left side of the gridview. How can I remove this gap? I also have the same issue with RadTreeListView. Is the approach going to be the same?

Thanks.

Marianne

GridView

answered on 25 Mar 2011

5 answers

224 views

Sorting Programmatically Created Columns Not Working

Hello,

In my application, I have a RadGridView that contains columns that have been added via XAML as well as columns that are added dynamically in code. The problem I am seeing is that the columns added via code cannot be sorted or grouped, while there is no problem with the columns created in XAML. I have confirmed that the dynamically added columns have the IsSortable and IsGroupable properties set to true. Should this be all I need?

One important difference is that the programmatically added columns contain more complex property names than do the columns added in XAML. This results in the EffectiveSortMemberPath being set to something like "Experiments[0].WarpsPerBlock" (from the binding) on each of the dynamic columns. Could the "deep" property string cause sorting to fail?

Any help will be greatly appreciated!

Thanks,
Mark

GridView

answered on 24 Mar 2011

1 answer

141 views

Max display date?

I am evaluating the option of using the DateTimePicker instead of another DateTime control. It has been a great fit for us, except for one thing.

In our system, when specifying bounds, we use an end date of 1/1/9000 to indicate that something is open-ended.

The problem is that even though I have the SelectableDateEnd and DisplayDateEnd properties set to 1/1/9000, when you open the picker, the max date is 1/1/3000.

Is there any way to alter this behavior?

DateTimePicker

answered on 24 Mar 2011

2 answers

140 views

Problem: Floating dockable panel size

Creating a RadPane by code an make it floating dockable, i can't set the floating pane size.

Y try with MinHeight.... Height....

Example

oRadPane.MinHeight = 600;

oRadPane.MinWidth = 600;

oRadPane.MakeFloatingDockable();

Always have the same default size.

Any solution?

Docking

answered on 24 Mar 2011

3 answers

193 views

More Drag & Drop Woes

This really is beyond the pale:

I have a collection of specialised appointments, i.e. objects that inherit from Appointment. They are shown in a Listbox and can be dragged onto a ScheduleView.

The additional fields in my inherited object are already set with their pertinent information. However, dragging onto the ScheduleView this information is lost.

CopyFrom in the specialised object is called many times, sometimes with the correct original information, sometimes with blank information. Always the last time is with the blank information, which is clearly wrong.

How can I make ScheduleView only copy the original source Appointment ONCE and ONCE ONLY?

2010 Q3.

ScheduleView

answered on 24 Mar 2011

2 answers

133 views

Custom Resource class

Hi,

What do I need to do to have a self defined Resource class? Currently I'm inheriting from the class Telerik.Windows.Controls.Resource. My resources are shown in the scheduler, but selection,multiselection and drag and drop does not work correctly anymore. If I add "normal" resource objects everything works fine. What do I have to consider when implementing my own resource class?

thanks in advance,

michael

ScheduleView

answered on 24 Mar 2011

0 answers

71 views

Error while binding large XML (20MB) to radtreelistview

Hi.
I am trying to bind radtreelistview with a large static XML (size 20 MB) which is placed in the application folder ,but i get an error saying "Not enough memory available for this operation".
I have set the property of this XML file as "Build Action" = content.
The binding works well if the file size is around 12MB.

What options do I need to try in order to bind large XML? Please reply

TreeListView

asked on 24 Mar 2011