Questions on UI for WPF Forum

4 answers

488 views

Hi
I'm using a RadTreeView with checkboxes. I'm binding the ItemsSource property of the radtreeview to a collection of my businessobject. I need to retrieve the checked items (businesss objects) on my view model class. I tried to bind the CheckedItems property to an ObservableCollection on my viewmodel. but it gives me a compile error because the set accessor is not accessible.
Is there another way of doing this other than hooking it to the checked event from the code behind?

TreeView

answered on 30 Nov 2009

4 answers

171 views

Subclassing and binding

Hello,

I have recently upgraded to the latest Q3 release and have run into a problem that used to work with the Q2 binaries. I have an object that I use to “collect” properties from multiple objects for displaying on a grid. For instance, I have a person object with name properties, and an address object(collection) with its fields. In a grid, I’d like to display the person’s name and their (primary) address.

I had a solution that worked well in the Q2 binaries, but since the upgrade my solution will no longer work as the item source seems to look at the base class, instead of the object being passed in.

Here’s a boiled down example to illustrate my issue.

Here's the class difinitions:

    
                    public class Visualitems : List<Visualitem> {  
        
                        object Parent { get; set; }  
        
                    }  
        
                    public abstract class Visualitem {  
        
                        public object Parent { get; set; }  
        
                    }  
        
                    public class GridDataItem : Visualitem {  
        
                        public GridDataItem( string first, string middle, string last ) {  
        
                            this.FirstName = first;  
        
                            this.LastName = last;  
        
                            this.MiddleName = middle;  
        
                        }  
        
                        public string FirstName { get; set; }  
        
                        public string MiddleName { get; set; }  
        
                        public string LastName { get; set; }  
        
                    }

Here's how I attempt to setup and populate the grid:

    
                        Visualitems items = new Visualitems();  
        
                        items.Add( new GridDataItem( "Jon", "A", "Smith" ) );  
        
                        items.Add( new GridDataItem( "Tom", "P", "Jones" ) );  
        
                        items.Add( new GridDataItem( "Ken", "W", "Adams" ) );  
        
                        items.Add( new GridDataItem( "Kelly", "C", "Truman" ) );  
        
                        Telerik.Windows.Controls.GridViewDataColumn gvc = new Telerik.Windows.Controls.GridViewDataColumn();  
        
                        gvc.UniqueName = "FirstName";  
        
                        gvc.Header = "First Name";  
        
                        gvc.DataContext = "FirstName";  
        
                        gvc.IsVisible = true;  
        
                        gvc.Width = new Telerik.Windows.Controls.GridViewLength( 1, Telerik.Windows.Controls.GridViewLengthUnitType.Star );  
        
                        grid.Columns.Add( gvc );  
        
                        Binding binding = new Binding();  
        
                        binding.Source = items;  
        
                        binding.Mode = BindingMode.OneWay;  
        
                        binding.BindsDirectlyToSource = true;  
        
                        grid.DataContext = binding.Source;  
        
                        grid.SetBinding( Telerik.Windows.Controls.RadGridView.ItemsSourceProperty, binding );

This will generate the error: "Property with name FirstName cannot be found on type Visualitem"

Any guidance on this matter would be appreciated...

Thank you in advance for your time,

Craig

GridView

answered on 30 Nov 2009

1 answer

80 views

Can't instantiate RagGridView

Hi, i am trying to use RadGridView

i have add the reference dll and add namespace definition,

and use this Code in my project

                    <Controls1:RadGridView ItemsSource="{Binding Orders}" AutoGenerateColumns="True"></Controls1:RadGridVie>         

I have no compiler error, but when i lunch the application i get the follow exception:

Can not assign value '/Telerik.Windows.Controls.GridView;component/themes/office/black/GridViewToggleButton.xaml' to property 'Source' of object 'System.Windows.ResourceDictionary'. Object reference not set to an instance of an object. Error at object 'System.Windows.ResourceDictionary' at markup file 'Telerik.Windows.Controls.GridView;;;Component/Themes/GenericOfficeBlack.xaml'.

How Can i solve my problem ?

GridView

answered on 30 Nov 2009

1 answer

104 views

X-Axis is not starting at chart begining

Hi,
I am creating a chart in code behind.

I have a small problem when using SplineAreaSeriesDefinition -> see attachment.
I cant get the series x axis to start at zero ?

Does anyone have a tip ?

Best regards.
krissi.

Chart

answered on 30 Nov 2009

1 answer

66 views

Unexpected behavior of RadGridView.MinHeight

All,

I have found a bug in the RadGridView control which causes the group area to be larger then expected. To reproduce this bug, just set the MinHeight property of the grid view control to some large number. This even proves true in designer mode.

- Rashad Rivera

GridView

answered on 30 Nov 2009

1 answer

102 views

Combobox column

Hi,

When I set a filter on the GridviewComboboxColumn I see the SelectedValuePath instead of the DisplaymemberPath.
This is not what you would expect.

In your RadComboBox you have an ItemTemplate and a SelectionBoxItemTemplate. I also would like to have this behaviour for the GridViewComboBoxColumn. Is this possible?

Thanks,

Thomas.

GridView

answered on 30 Nov 2009

2 answers

108 views

Combobox column

Hi.

At the moment I can only show one property in the gridviewcomboboxcolumn; the property name I assign to the displaymemberpath.

What I like to do, is to show a datatemplate where I use a combination of several properties of the itemssource e.g. Firstname and Lastname. Is this possible?

Thanks,

Thomas

ComboBox

answered on 30 Nov 2009

1 answer

80 views

Pagination of Telerik Radgrid in Silverlight

Hi,

we are just migrated to the Silverlight. In that we are used the RadGridView.

So can you please let know any way to implement Pagination of Telerik Radgrid in Silverlight.

Thanks In Advance.

Regards,

S s

GridView

answered on 30 Nov 2009

2 answers

422 views

Combobox displaymemberpath not showing

Hi,

Since the last update (2009.3.1120.35), some of my radcombobox's are not working anymore:
in the selectionbox the linq to sql entity is shown instead of the DisplayMemberPath property.
The selected item is shown as expected.

    
             <telerik:RadComboBox   
        
                                                      Margin="2,0,0,0"  
        
                                                      Grid.Row="3" Grid.Column="1" Grid.ColumnSpan="4" 
        
                                                      Name="cbOmschrijving" 
        
                                                      ToolTip="Standaard omschrijving artikel" 
        
                                                      DisplayMemberPath="Tekst" 
        
                                                      SelectedValuePath="NLStandaardTekstID" 
        
                                                      SelectedValue="{Binding StandaardOmschrijvingID 
        
                                                            ,UpdateSourceTrigger=PropertyChanged}" 
        
                                                      Height="20" > 
        
                                                <telerik:RadComboBox.ContextMenu> 
        
                                                    <ContextMenu> 
        
                                                        <MenuItem Header="Bewerken" Click="OmschrijvingBewerken"/> 
        
                                                    </ContextMenu> 
        
                                                </telerik:RadComboBox.ContextMenu> 
        
                                            </telerik:RadComboBox>

ComboBox

answered on 30 Nov 2009

1 answer

58 views

Sorting

can you show me an example of how to make a gridview which sorts it's columns?

code it only in xaml

thanks

GridView

answered on 30 Nov 2009