Questions on UI for WPF Forum

2 answers

89 views

Possible Bug in Telerik.Windows.Controls.FrameworkElementExtensions

Hello All,

This is an indirect bug that may not show up on the first time. Basically, I have traced a "Dispatcher.VerifyAccess" violation to the FrameworkElementExtensions class. This issue came about while my code was updating an ObservableCollection that the RadGridView.ItemsSource was bound to. Since I can't intercept the update to the RadGridView, the "Dispatcher.CheckAccess()" would have to happen in the Telerik code. So, either this check happens in the FrameworkElementExtensions class, or somewhere in the RadGridView class, say in the GridViewDataControl.OnCollectionViewCollectionChanged() method.

- Rashad Rivera
omegusprime.com

GridView

answered on 09 Oct 2009

3 answers

148 views

Is this possible?

Ok I have a cool idea but I don't know if I can pull it off...

I have a chart for a dashboard that displays metrics data in a stack for every day of the current week.

I load all of the days of the week except for the current day using a query into an archive data warehouse table.

I pull the current days data from current tables.

This works well but my goal is to display this data on a dash console in the office and update the chart every 15 seconds.

I only want to update the current day's bar though.... I don't want to refresh the whole control.

i.e.

if today is Tuesday I want to display Sat, Sun, Mon, Tue values but I want to refresh Tue every 15 seconds and only re-paint the bars for Tuesday.

Is this possible?

Thanks,

Tim

Chart

answered on 09 Oct 2009

6 answers

318 views

An item with the same key has already been added.

Can you shed any light on what would cause this issue? Typically, it will happen when I group or when I try to sort on a column.

I'm using the grid to display a set of search results, 10 columns in total. There will be duplicate values in some columns as some identifiers (customer / transaction IDs, etc) may appear multiple times. The grid is bound via MVVM to an ObservableCollection of objects via the DataContext. The columns are set up as attributes of those objects on first bind of the DataContext.

The data comes up fine on first load; then has issues when we sort or group.

GridView

answered on 09 Oct 2009

1 answer

110 views

Select Multiple Items Programatically?

I cannot see any way of selecting multiple items programmatically only single items. I am asking as I have a need to automatically refresh the grid but keep a users selections that they may be working on at the time.

GridView

answered on 09 Oct 2009

1 answer

145 views

UnBound Floating Panel

Any plans to allow floating panels to move outside the bounds of the main window?

-Terry

Docking

answered on 09 Oct 2009

1 answer

228 views

RadTabItem Header Stretch

Is there a way, in XAML, to cause the tab item headers to stretch across the width of the tab control.

For example, I have three tabs, red, blue and green. I have a tab control with it's width set to auto, the tab headers will only fill up part of the space above the tab content, I want them to fill up all the space.

More specifically if I have 4 tabs I want last tab to take up the remaing space.

TabControl

answered on 09 Oct 2009

2 answers

111 views

[Solved] "Enter" key does not come out of the edit mode

Hello again,

I have another anoying bug in the GridView! With the following grid's XAML code:

    
            <telerik:RadGridView Grid.Row="1" Margin="0,5,0,5" Name="rgvAdministrativeAgent" xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation" SelectionChanged="rgvAdministrativeAgent_SelectionChanged" AutoGenerateColumns="False" RowEditEnded="rgvAdministrativeAgent_RowEditEnded" ValidationMode="Row">  
        
                <telerik:RadGridView.Columns> 
        
                    <telerik:GridViewDataColumn Header="Name" DataMemberPath="Name" /> 
        
                    <telerik:GridViewDataColumn Header="Abbreviation" DataMemberPath="Abbreviation"  /> 
        
                </telerik:RadGridView.Columns> 
        
            </telerik:RadGridView>

When I start editing a row, everything is fine until I hit the "enter" key!

Then, the RowEditEnded event is launched as expected but when it ends, the row stay in edit mode! As long as I use the "enter" key, it will stop the edition mode and worse: it will relaunch each time the RowEditEnded event with a strange behavior because de e.newData stays the same as the first time the event was launched (even if data was modified before hitting "enter" key).

The only way to get out of this is to click anywhere else (wich launches also the RowEditEnded).

I don't know if it is normal, but I would expect the grid to stop editing the row when hitting "enter".
Is there any workaround?

Thanks,

Daniel

GridView

answered on 09 Oct 2009

3 answers

151 views

TabHeader Template

<TabItem.header>
<textBlock>ABC</textBlock>
</TabItem.Header>

When I am modifying Header template like this then it's not raising tab click event but when I click somewhere to end corners of tabheader.Event fires.I think It is something related with bubble events Which is not working when modifying header.

Please help me for this.

TabControl

answered on 08 Oct 2009

5 answers

313 views

Cell Navigation

Hi,

The grid control looks good performance and feature wise.
However i was wondering how to switch on the cell-only/cell-row navigation (with keyboard) feature.

Can anybody suggest me on this?

Thanks,
Anurodh

GridView

answered on 08 Oct 2009

2 answers

242 views

[Solved] Slider with small Width...

Hi.

I updated to Q2 2009 SP1 and now I have problem with small sliders (Width less than 56).
I use default theme (I think Office_black) and when I want to create slider with small Width it is not working right.

For example I want to do something like this:

myTestSlider = new Telerik.Windows.Controls.RadSlider();
myTestSlider.IsSnapToTickEnabled = true;
myTestSlider.TickPlacement = Telerik.Windows.Controls.TickPlacement.None;
myTestSlider.TickFrequency = 1;
myTestSlider.Focusable = false;
myTestSlider.Width = 34; // 8+20+6
myTestSlider.Minimum = 1;
myTestSlider.Maximum = 10;
Canvas.SetLeft(myTestSlider, 10);
Canvas.SetTop(myTestSlider, 10);
myTestCanvas.Children.Add(myTestSlider);

Slider Control has width 34 but its "internal" parts look and work like on width around 56 and so right part is not visible and goes beyond right border.
I don’t know if I am doing something wrong but currently I am not able to make small sliders.

Best regards,
Michal

Slider

answered on 08 Oct 2009