Questions on UI for WPF Forum

1 answer

56 views

Pasting to a property of non primitive type doesn't seem to work

Let DoubleValue be a wrapper type around a Double, with an attached TypeConverter that knows how to convert from/to Double. And suppose that we have a GridViewDataColumn bound, via DataMemberBinding, to a property of this type. Pasting numeric strings to this column doesn't work, internally generating an InvalidCast exception.

To me this looks like a bug, the column is ignoring the attached type descriptor. It should be doing

System.TypeDescriptor.GetConverter(...).ConvertFrom(...)

GridView

answered on 13 May 2011

3 answers

218 views

Dynamicaly Changing the Image of expander of Treeview

Hi,
I am facing an issue while using the telerik treeview in below scenerio.
the images of the expander has to be changed and it has to be dynamically chosen between two images based on the data is binded to it.
when data is binded to the treeview, based on the boolean column, the nodes has to display different images, if this value is true it has to show one image and if it false it has to show another image.
when the node has expanded, then the image of that noted should be rotated version of the image shown earlier (before expanding).

TreeView

answered on 13 May 2011

1 answer

177 views

HierarchyChildTemplate: Child rows selection

Hi,

What do I need to configure so that when ever user clicks a child item of the hierarchical grid SelectedItem is fired?

This is what I am observing

Parent 1
Child A
Parent 2
Child B

When selecting Child A SelectedItem is fired. Selecting Child B SelectedItem is fired as well. The problem is that Child A is still selected. How can unselect Child A.

GridView

answered on 13 May 2011

1 answer

24 views

Can I tie parent and child SelectionMode together?

I have read in this forum that the child and parent SelectionMode are independent. Is there a way to tie them together? I only want ONE record shown as selected regardless of whether it is a parent or child.

if * and BOLD means "selected/highlighted", this is what I am seeing:

* Parent 1
   * Child A
   * Child B
Parent 2
   * Child C
   * Child D

What I desire is if I clicked on Child A again is for all other rows to be deselected and ONLY Child A is highlighted, no parent records selected, no other children.   I would like SelectionMode = Single across all data relations. Is this possible?

Parent 1
   * Child A
    Child B
Parent 2
    Child C
    Child D

I would show an image but I guess you can't do attachments in the forum.

Thanks in advance!

GridView

answered on 13 May 2011

1 answer

250 views

Enable Cancel Button when editing record

Is there a way to Cancel in the middle of editing an item in the RadDataForm?
When I click on the Add Button, both the Commit Button and Cancel Button are enabled, so I can cancel out of creating a new record.
When I click on the Edit Button, the Commit Button is enabled, but the Cancel Button is grayed out.

I am binding an ObservableCollection of objects to the RadDataForm ItemsSource property which gets loaded in the WindowLoaded event handler, and reloaded after adding, editing or deleting an item in the collection.

I would like the user to be able to cancel an editing operation where the item being edited reverts to its previous state if the user clicks the Cancel Button. Is this possible?

DataForm

answered on 13 May 2011

1 answer

115 views

Textwrapping in column

I have a simple gridview as follows:

<telerikgridview:RadGridView ScrollViewer.HorizontalScrollBarVisibility="Disabled" x:Name="ActivitiesGrid" IsReadOnly="True" AutoGenerateColumns="False" SelectionMode="Extended" ItemsSource="{Binding SelectedPatient.Activities}" ShowGroupPanel="False" RowIndicatorVisibility="Collapsed" ShowColumnHeaders="False" SelectionChanged="ActivitiesGrid_SelectionChanged">
  <telerikgridview:RadGridView.Columns>
      <telerikgridview:GridViewDataColumn DataMemberBinding="{Binding ActivityDate}" Header="{lex:LocText S3.ParametersUE.PatientManagement:UIStrings:PatientDetailsView_GridActivityHeaderDate}" DataFormatString="{}{0:dd/MM/yyyy}" MinWidth="100"/>
      <telerikgridview:GridViewDataColumn DataMemberBinding="{Binding Description}" Header="{lex:LocText S3.ParametersUE.PatientManagement:UIStrings:PatientDetailsView_GridActivityHeaderDescription}" />                                                
  </telerikgridview:RadGridView.Columns>
</telerikgridview:RadGridView>

If the text of Description is long, a horizontal scrollbar appears. How can I make sure that no horizontal scrollbar appears, but that the text is wrapped so that it is full visible in the column?

GridView

answered on 12 May 2011

1 answer

349 views

Custom Checkbox

Hi! I am testind yours RadTreeView Control and i have a big problem. I want to use TriState tree and i have my global checkbox style.
Global style for checkbox is:

<RadialGradientBrush x:Key="HoverBrush">

<RadialGradientBrush.RelativeTransform>

<TransformGroup>

<ScaleTransform CenterX="0.5"

CenterY="0.3"

ScaleX="1.804"

ScaleY="0.743" />

<SkewTransform CenterX="0.5"

CenterY="0.5" />

<RotateTransform CenterX="0.5"

CenterY="0.5" />

<TranslateTransform Y="0.47999998927116394" />

</TransformGroup>

</RadialGradientBrush.RelativeTransform>

<GradientStop Color="#FFFCE312"

Offset="0.209" />

<GradientStop Color="#00FFFF00"

Offset="1" />

<GradientStop Color="#FFFFFFFF"

Offset="0" />

</RadialGradientBrush>

<LinearGradientBrush x:Key="CheckIconBrush"

EndPoint="0.5,1"

StartPoint="0.5,0">

<GradientStop Color="White" />

<GradientStop Color="White"

Offset="1" />

</LinearGradientBrush>

<Style TargetType="{x:Type CheckBox}">

<Setter Property="SnapsToDevicePixels" Value="true"/>

<Setter Property="FocusVisualStyle" Value="{DynamicResource CheckBoxFocusVisual}"/>

<Setter Property="Background" Value="{DynamicResource ElementBackground}"/>

<Setter Property="BorderBrush" Value="{DynamicResource ElementBorder}"/>

<Setter Property="Template" Value="{DynamicResource CheckBoxTemplate}" />

<Setter Property="Foreground" Value="{DynamicResource TextBrush}"/>

<Style.Triggers>

<Trigger Property="IsEnabled" Value="False">

<Setter Property="Foreground" Value="{DynamicResource DisabledForegroundBrush}"/>

</Trigger>

</Style.Triggers>

</Style>

<ControlTemplate x:Key="CheckBoxTemplate" TargetType="{x:Type CheckBox}">

<ControlTemplate.Resources>

<Storyboard x:Key="CheckedFalse">

<DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="CheckIcon" Storyboard.TargetProperty="(UIElement.Opacity)">

<SplineDoubleKeyFrame KeyTime="00:00:00.1000000" Value="0"/>