Questions on UI for WPF Forum

2 answers

171 views

Hi, I'd like to keep the GridView in a continuous insert mode when the currently inserted row is valid and the user presses the Enter key.

Scenario:
A new row is being inserted into the GridView and the user presses the Enter key. The inserted row's data is valid

Observed Behavior:
The GridView commits the edit and focus then is moved to the next focusable control on the GridView's parent user control.

Desired Behavior:
After the row is commited, I'd like the GridView to re-enter insert mode and preselect (set focus to) the first cell. In this way, a continuous data-entry mode can be provided.

How can I accomplish this? Thanks!

GridView

answered on 27 Feb 2012

4 answers

177 views

Undestroyable Readonly Ranges

Hi

How can I protect a ReadOnly Ranges from being removed via the UI?
It's impossible to remove something inside the range itself
via the UI - that's nice.
But when for example selecting the whole document's content (Ctrl+A)
and removing it (DEL) the readonly ranges are also removed.
Generally anytime when the ROR is contained inside a selection and the
edges of the selection aren't part of the ROR, it can be removed.

Is there a way to supress it?
Can I protect parts of a document against editing/removal?

Greetings,
Chris

RichTextBox

answered on 27 Feb 2012

2 answers

636 views

PDFViewer toolbar

Question 1: How do I make the WPF PDFViewer toolbar show?

I currently have the following xaml:

<Grid x:Name="LayoutRoot" DataContext="{StaticResource DataContext}">

<telerik:RadPdfViewer x:Name="pdfViewer" DocumentSource="A10000292S_Notice.pdf" />

</Grid>

This xaml is in a System.Windows.Window.

Question 2: There is a "DocumentSource" property that I am successfully using, but what is the "Document" property for?

Thanks in advance.
Kellie Harrisson
Sierra Systems, Edmonton

PDFViewer

answered on 27 Feb 2012

1 answer

96 views

Rows not appearing automatically

If I simply add a gridview and leave all the default properties, then try and populate it with this simple code:




private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            List<string> strings = new List<string>();
            radGridView1.ItemsSource = strings;
 
            strings.Add("a");
            strings.Add("b");
            strings.Add("c");
 
            radGridView1.Items.Refresh();
        }



The rows do not appear until I click a column header to re-order that column. As Items.Refresh() does not work what can I call to make the rows appear?



I know using an ObservableCollection rather than list<string> will work, but I can't do that in this situation.



thanks

GridView

answered on 27 Feb 2012

3 answers

121 views

Question about loading GridView

Following the demo on GridView settings, I'm saving the declared column visibility when the user control loads. The user can then toggle which columns in the grid they want to see (and export). If they have gotten to a point where they want to reset all the columns back to the default (not all columns are visible by default), I have a link to reset the visibility, by loading the initial saved settings. This works the first time they click on it.

Let's say they then change visibility again and again want to reset, it doesn't work. I'm guessing it's because the persistence manager thinks it's already loaded? How do I get it to re-load? I could do it the manual way, but I want to use persistence because I anticipate them wanting to keep these settings between sessions, so I might eventually persist to a file.

PersistenceFramework

answered on 27 Feb 2012

3 answers

169 views

Timeline view by various time groups

Is there a way to have scheduleView timeline group day day, week, month, quarter in a way that the user can specify the grouping they want. Attached is a proposed mockup of what i'm trying to accomplish.

ScheduleView

answered on 27 Feb 2012

1 answer

56 views

Styling issues - Column Background and IsFilterable

Hi,

I have two styling issues wtih the GridView. The first is I am trying to by default set a column style to not display the Filter for a column by default (we only have a few columns in each grid that are filterable). My code is as follows:

<Style TargetType="telerik:GridViewColumn" >

<Setter Property="IsFilterable" Value="False"/>

</Style>

Second, I have a cell style set as well but I now when I set the Background brush for a column it has no affect. What am I doing wrong?

<Style TargetType="telerik:GridViewCell" >

<Setter Property="Template">

<Setter.Value>

<ControlTemplate TargetType="{x:Type telerik:GridViewCell}">

<Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}">

<ContentPresenter Content="{TemplateBinding Content}" ContentTemplate="{TemplateBinding ContentTemplate}"/>

</Border>

</ControlTemplate>

</Setter.Value>

</Setter>

<Setter Property="BorderBrush" Value="#FFEFEFEF" />

<Setter Property="BorderThickness" Value="0,0,1,0" />

<Setter Property="Margin" Value="2,0,0,0"/>

<Setter Property="VerticalAlignment" Value="Center"/>

<Setter Property="HorizontalAlignment" Value="Stretch"/>

</Style>

In the gridview I am setting the background as such:

Any help would be greatly appreciated!
David A.

<telerik:GridViewDataColumn DataMemberBinding="{Binding HoursCompleted}" Header="Hours" UniqueName="HoursCompleted" DataFormatString=" {0:n2}" HeaderTextAlignment="Center" Width="60" Background="#33FDA500"/>

GridView

answered on 27 Feb 2012

5 answers

454 views

SplitButton IsEnabled is ignored when a Command is used

Hi,

I have this XAML:

<telerik1:RadSplitButton
Content="Some Label"
IsEnabled="{Binding SomeProperty}"
Command="{Binding MyCommand}"
....

Where MyCommand is a DelegateCommand class where the CanExecute method returns True. The problem is that the IsEnabled in the XAML is ignored and the button is always enabled even if SomeProperty's value is false.

This is unexpected because it does not happen with other controls like the standard Button. I was going to post a bug report but I am not sure if this is by design.

Jose

Buttons

answered on 27 Feb 2012

2 answers

341 views

RadGridView HierarchyChildTemplate and State

Our use case is to have a grid which can be expanded to show more granular details including child data, similar to your samples. One of the catches is that not all the data is available in the ItemsSource collection of objects. To avoid what will appear as a memory leak over time, we chose to load / unload the child data as needed. We have success using the RowIsExpandedChanged event to manage the data. We also use the HierarchyChildTemplate and specify the DataTemplate as a collective group of controls and UserControls.

One of these UserControls is another GridView to present a collection of child details of the parent record. This user control will subscribe to events and update its grid with additions and edits. To wire up these events we use an identifier passed to the control via a DependancyProperty. We have found that once a row has been expanded and the UserControl initialized for those events it will remain in effect even when the row is collapsed. To confirm this we wired up the CoerceValueCallback on the DependancyProperty and it is not getting fired when we expand the row after the first time. We understand that due to the virtualization rows are destroyed when out of view. So, in turn, just the event of the user scrolling around will perform a sort of "clean up." As good practice of not leaving resources in use when no longer visible, is there some property we should be setting to destroy the HierarchyChildTemplate when the row is collapsed?

Here are some segments of code we are using.

<Telerik:RadGridView Grid.Row="1" x:Name="radGridViewMain" ItemsSource="{Binding Incidents}"

IsReadOnly="True" AutoGenerateColumns="False" CanUserFreezeColumns="False"

RowIsExpandedChanged="radGridViewMain_RowIsExpandedChanged"

ShowGroupPanel="True" RowIndicatorVisibility="Collapsed"

TelerikGridViewHeaderMenu:GridViewHeaderMenu.IsEnabled="True"

CustomFilter:CustomFilterBehavior.TextBox="{Binding ElementName=textBoxFilter}">

<Telerik:RadGridView.ChildTableDefinitions>

<Telerik:GridViewTableDefinition>

<Telerik:GridViewTableDefinition.Relation>

<TelerikWindowsData:PropertyRelation ParentPropertyName="PrimaryKey"/>

</Telerik:GridViewTableDefinition.Relation>

</Telerik:GridViewTableDefinition>

</Telerik:RadGridView.ChildTableDefinitions>

<Telerik:RadGridView.HierarchyChildTemplate>

<Controls:ChildItems PrimaryKey="{Binding PrimaryKey}" />

GridView

answered on 27 Feb 2012

1 answer

129 views

Maximise from code behind not working!

Hi,
I have a radtileview with a small number of tiles and I am attempting to loop through the tiles and maximse each one in turn form code behind. I get the 'Object reference not set to an instance of an object.' error when maximise is called. Can you put me right with this.
Regards,
Joe

The Code:

For I As Integer = 0 To Me.RadTileView1.Items.Count - 1

Dim item As RadTileViewItem = TryCast(Me.RadTileView1.Items(6), RadTileViewItem)

item.TileState =

TileViewItemState.Maximized

Thread.Sleep(5000)