Questions on UI for WPF Forum

6 answers

182 views

Hi,

On my RadChart i would like to "control" x labelstep thank to a property in a ViewModel (as you see I'm using MVVM pattern).

But when i try to use this mehod, i've got this message :

System.Windows.Data Error: 2 : Cannot find governing FrameworkElement or FrameworkContentElement for target element. BindingExpression:Path=Intervalle; DataItem=null; target element is 'AxisX' (HashCode=6253391); target property is 'LabelStep' (type 'Int32')

It seems that RadChart is loosing DataContext juste for this property. Any idea ? :D I probably should affect DataContext to "AxisX" but i don't know how to do it.

Here is my code :

<telerik:ChartArea LegendName="CustomLegend" Name="chArea" NoDataString="Aucune données" DataContext="{Binding ElementName=brd1,Path=DataContext}">

<telerik:ChartArea.AxisX>

<telerik:AxisX MajorGridLinesVisibility="Collapsed"

Title="Heures"

IsZeroBased="True" AutoRange="True" LabelStep="{Binding Intervalle}" />

</telerik:ChartArea.AxisX>

<telerik:ChartArea.AxisY>

<telerik:AxisY MajorGridLinesVisibility="Visible"

MinorTicksVisibility="Visible"

Title="Hits Lus" AutoScale="True" />

</telerik:ChartArea.AxisY>

</telerik:ChartArea>

Thank's !

Chart

answered on 26 Aug 2010

9 answers

463 views

Populate Cells in grid, without binding to dataset

HI.

I am building a grid in code, and needs to add rows ( and populate theirs cells ) in runtime.

Creating the columns was easy, but I battle to edit the cell values.

This is what I have tried.

grid.Items.AddNew() creates a new row in the grid. I would now like to assign a value to cell[0] in the new row.
grid.Items[0] does not contain a method to access the cells.

How do I get to the cells?

I know that binding the grid to a datatable will be much easier, but I was hoping to access the cells directly, without having to create a table for the data first.

Thx!

GridView

answered on 26 Aug 2010

1 answer

199 views

Cannot centre window, even when parent is set

I am unable to centre a child dialog window of type RadWindow. I create the window as following:

NewGoalWindow view = new NewGoalWindow();

view.WindowStartupLocation = WindowStartupLocation.CenterOwner;

view.Owner = WindowHelper.MainWindow;

NewGoalViewModel model = new NewGoalViewModel();

model.RequestClose += delegate

{

view.Close();

};

view.DataContext = model;

view.ShowDialog();

The window is always located in the top left corder. WindowHelper.MainWindow is a reference to a RadWindow, which I have checked is the main window of the application.

I need help. Am I overlooking something?

Window

answered on 25 Aug 2010

2 answers

146 views

PanelBar VerticalScrollBar Height

I've got a RadPanelBar with the Vertical/Horizontal Visibility properties set to Auto, which has been working initially when I display a user-control, but has some issues with resizing:

If I increase the height of my window, the vertical scrollbar's height seems to be aware of the increased height, and accounts for this, however, when I decrease the height of the window, the vertical scrollbar remains at the largest height it had reached previously.

I recall some properties in WinForms you had to set in order to resize for grow-and-shrink, but I don't see anything like this in the WPF stack. Is this resize behavior a known issue, or have I missed a setting that would make the scrollbar work as expected?

BTW - we're using version 2010.1.515.35 currently

Thanks,
Tony

PanelBar

answered on 25 Aug 2010

6 answers

326 views

Column Cell Template

Hi:
I need to design a cell template only for one column of the radgridview, How can do that? and
the cell template change depending the value of other column of the radgridview (in code behind).

please help me!
my Best Wishes
Oscar Zapata.

GridView

answered on 25 Aug 2010

3 answers

128 views

Timepicker dropdown doesn't work within a listbox/listview

The RadTimePicker doesn't work correctly when it is placed inside a listbox. When you select a time from the dropdown, then the dropdown closes, but the binding is not updated.

The following snippet shows the problem:

<ListBox x:Name="multipleItemsPresenter" ItemsSource="{Binding}">

<ListBox.ItemTemplate>

<DataTemplate>

<StackPanel Orientation="Horizontal">

<telerik:RadTimePicker Width="80" SelectedTime="{Binding Path=Time, Mode=TwoWay}"/>

<TextBlock Margin="20,0,0,0" Text="{Binding Path=Time, Mode=OneWay}">

</StackPanel>

</DataTemplate>

</ListBox.ItemTemplate>

</ListBox>

I guess the ListBox and/or ListView intercepts the click, because it does work fine with an ItemsControl.

TimePicker

answered on 25 Aug 2010

1 answer

270 views

Sort by result of IValueConverter

Is it possible to sort a GridViewDataColumn by the result of the converter rather than the object the column is bound to?

GridView

answered on 25 Aug 2010

3 answers

216 views

Memory Leak with TileView

Hi,

I'm having memory issues with TileView control. Basically, I have a dialog with a TileView inside and when this dialog is popped up and closed I expect all the objects to be cleaned up from the memory. I do trigger Garbage Collection and looks like it is guaranteed that there are nothing in my application that holds those objects in the memory.

I used ANTS Memory profiler and it shows there are 3 "things" referencing TileView control:
1) some WeakHashTable.
2) some WeakEventTable.
3) and another Hashtable in ReflectTypeDescriptionProvider class.

Please take a look to the following object retention graph - http://rubenhak.com/TileViewMemoryLeak.png
Looks like ReflectTypeDescriptionProvider does not let objects to be garbage collected.

What you think?

Thanks,
Ruben

TileView

answered on 25 Aug 2010

1 answer

96 views

Footer Content Disappears

I have a GridView with some column footers. I'm finding in some situations (which I have difficulty repeating) that the controls in the column footers do not display. I run Snoop and can see that the controls are in the control tree but they are not visible. If I select the item in the Snoop tree, the item displays. Sounds like a bug to me.

GridView

answered on 25 Aug 2010

2 answers

252 views

Hiding Icons, but show a full width seperator

Hello All,

We have a RadMenu which we do not need or want icons on. I successfully set the IconColumnWidth="0" and this hides the icon column just fine. However, the <telerik:RadMenuItem IsSeparator="True" /> menu item doesn't seem to respect this. The separator bar is moved over to the right for the width of the icon column used to be.

Not sure if this is a bug, working as designed, or there is a workaround for this. Has anyone else run across this behavior?

Menu

answered on 25 Aug 2010