Questions on UI for WPF Forum

2 answers

491 views

I am using the ChartView control, and would like to be able to change the Zoom from code.
I have tried two things.

1. Set Zoom property directly from code.
i.e. Chart.Zoom = new Size(1,1);

2. Bind to a Zoom property on my view model, and set that property.

i.e. XAML gets

<telerik:RadCartesianChart Name="Chart" Zoom="{Binding Path=Zoom, Mode=TwoWay}">

And code gets
ViewModel.Zoom = new Size(1,1);

Either way, the view is not refreshed correctly. However, on a re-size operation, it becomes OK again.

Is this a known problem, or is there something else I need to do?

Thanks
Craig Littlewood

ChartView

answered on 27 Mar 2012

3 answers

100 views

GridViewCheckBoxColumn always initially unchecked - what am I doing wrong?

Hi telerik,

I have the following rather simple use of the GridViewCheckBoxColumn -- and the grid shows up with no checkmarks what-so-ever.

Can you see what I'm doing wrong?

I can see (by breakpoint) that the row data model is queried for relevant value (so binding should be correct) and that the value in all cases is True (so the underlying value is as I expect).

Any clues?

Thanks,

Anders, Denmark

Grid



        <Controls:RadGridView x:Name="grid" 

                              AutoGenerateColumns="False" 

                              ItemsSource="{Binding Items}" 

                              Height="329" 

                              ScrollViewer.HorizontalScrollBarVisibility="Auto" 

                              ScrollViewer.VerticalScrollBarVisibility="Auto"

                              ShowGroupPanel="False" 

                              VerticalAlignment="Top" 

                              IsFilteringAllowed="False" 

                              >

            <Controls:RadGridView.Columns>

                <Controls:GridViewCheckBoxColumn DataMemberBinding="{Binding IsChecked}" IsThreeState="False" Initialized="GridViewCheckBoxColumn_Initialized" />

            </Controls:RadGridView.Columns>

        </Controls:RadGridView>

"Items"

ObservableCollection<ICheckableViewModel> Items { get; set; }

Row data item



    public class CheckableStringViewModel : ICheckableViewModel

    {

        public CheckableStringViewModel(bool isChecked, string displayName, string identity, bool isReadOnly)

        {

            IsChecked = isChecked;

            DisplayName = displayName;

            Identity = identity;

            IsReadOnly = isReadOnly;

        }



        public bool IsReadOnly { get; private set; }

        public string DisplayName { get; private set; }

        public string Identity { get; private set; }

        private bool _isChecked;

        public bool IsChecked

        {

            get { return _isChecked; }

            set { _isChecked = value; }

        }

    }

GridView

answered on 27 Mar 2012

1 answer

60 views

Change Mouse Key for Zoom selection

The "ChartPanAndZoomBehaviour" facility allows an area to be selected using the LeftMouseButton. Is it possible to change this to the RightMouseButton? If not, is it possible to add a custom facility?

Regards
Craig

ChartView

answered on 27 Mar 2012

2 answers

119 views

Group expands automatically

Hello everyone,

I am using Version 2011.3.1116.40 of GridView for WPF, if the Gridview is grouped I am saving the open groups in a list.
Everytime the user expands or collapses a group I add or remove the IGroup Element in the list.
After a refresh of the DatasourceProvider I expand all the groups which are in my list, but then if I scroll down the list the group with the first element in the list (datasource) is also expanded (GroupRowIsExpandedChanged event fires). It seems that after an refresh the currentscellinfo points to the first element and then if i scroll over the collapsed group where this element is included the group expands.
Do you have any ideas?

regards
Thomas

GridView

answered on 27 Mar 2012

1 answer

72 views

Persist form separatly

Hi,

I have a project with 3 forms, Form A/B/C. Form A call the showdialog of Form B and Form B call the showdialog of Form C.
Each form have a persistence Id. On the close of each form, I persist the form. Actually, when I close Form C, Form C/B/A are persisted at the same time!!! How I can persist a form only when it's needed???

Thank's

PersistenceFramework

answered on 27 Mar 2012

5 answers

268 views

bug in radmenuitem command binding at raisecanexecutechanged

Hi.
I'm using radmenu like this:

<telerik:RadMenu Grid.Column="0" VerticalAlignment="Center" IsTabStop="False" Orientation="Vertical">

<telerik:RadMenu.Items>

<telerik:RadMenuItem Header="Modyfikuj" Command="{Binding Path=StartEditPartCommand}"/>

<telerik:RadMenuItem Header="Zatwierdź" Command="{Binding Path=CommitEditPartCommand}"/>

<telerik:RadMenuItem Header="Anuluj" Command="{Binding Path=RejectEditPartCommand}"/>

</telerik:RadMenu.Items>

</telerik:RadMenu>

so basically, i'm binding menu items to some commands which have canexecute method:

StartEditPartCommand = new DelegateCommand(

/*foo*/,

() => !IsEditingPart && SelectedItem != null);

somewhere in code, raisecanexecutechanged method is properly raised:
StartEditPartCommand.RaiseCanExecuteChanged();

and... it doesn't refresh menuitems' IsEnabled property - they remain in previous state. Sliding mouse cursor over menuitem causes menuitems refresh, but not always.

When having changed radmenu to itemscontrols/stackpanels with buttons everything works fine, so it's probably bug with radmenu or radmenuitem?

Menu

answered on 27 Mar 2012

4 answers

144 views

How to sort RadChart's XCategorys

Hello,

I am trying to read in a bunch of data from a stored procedure and I build out multiple data series in the same order that it was received from the stored procedure. The problem lies in that the order of the data from the stored procedure is not the same order that RadChart renders the XCategories. For instance, I am reading in the XCategory's as Apr-2009, June-2009... till now. But the XCategory's wind up being alphabetized rather than ordered by the order specified in the stored procedure. Is there a good way to re-order the XCategories so they appear chronologically?

Thanks,
Sean

Chart

answered on 26 Mar 2012

4 answers

133 views

Changing Background_Disabled color?

I'm trying to change the color of a RadDataForm, when it's disabled.

I've found these instructions: http://www.telerik.com/help/wpf/raddatafor-styles-and-templates-styling-raddataform.html

But when I load my solution file in Microsoft Expression Blend 4, I get exceptions:

XamlParseException: 'Office_Black' is not a valid value for property 'Theme'.

DataForm

answered on 26 Mar 2012

0 answers

73 views

Grid not getting focus when clicking on header

Hi,

We use RadGridView 2011.2.920.35 . We have problems getting focus on our grids. If we have two grids side-by-side and focus is on the first one, clicking the header of one the columns of the second grid doesn't switch focus to that grid. This is a real problem when the grids are empty and the headers are the only thing displayed of the grid. Focus switching does work with other grid elements (background, groupbox, even clicking on the little filter icon in the header).

Is this known behavior? If so, how can I change it? If not, is there any other information I can provide to reproduce this issue and get help?

Bye,
Steven

GridView

asked on 26 Mar 2012

6 answers

201 views

Create custom filter based on property Type

Hi,

I have used the EditorTemplateRules to created custom filters for various properties based on their name (i.e. combo boxes populated with appropriate data).

What I would like to do now is create a rule based on property type rather than property name. I want all properties of type DateTime (or DateTime?) to use a custom control.

Is this possible?

Thanks.

DataFilter

answered on 26 Mar 2012