Questions on UI for WPF Forum

4 answers

198 views

Disable Drop Depending on Data Properties

I have a databound listbox that is bound to a class call Animal. On another form is several databound listboxes that are different types of animals. All listboxes use the Animal class. So what I want to do is when a user grabs an Animal class from the source listbox and drags it over to the form, depending on Animal.Type, only the listbox named the Animal.Type can accept the drop.

I thought maybe I could do this by using DragEnter. But I can't seem to get the business object out of the data object. I thought if I could, I could check it, and if it matched the Listbox name, I would enable drop. If not, I would disable drop on that listbox. I would do that to all of them.

Is this possible? I have been wrecking my brains and cannot figure out how to get the data out and what property to put it in. All the examples seem to talk about drag/drop strings. I have full blown bound objects.

So it is conditionally dropping depending on a property of the object being dragged.

DragAndDrop

answered on 11 Sep 2013

4 answers

574 views

GridViewComboBoxColumn different dropdown/selected values

I have a GridViewComboBoxColumn inside a RadGridView. The GridViewComboBoxColumn is bound to a collection of Objects. I need to display different things for the selected option vs the dropdown options. I would like to display one property of the Object in the selection box (object.Name), and another property in the drop down (Object.Description).

I accomplished this in a RadComboxBox before by doing the following:

<telerik:RadComboBox Grid.Row="2" Grid.Column="1" telerik:StyleManager.Theme="Windows8Touch" Margin="5 3 5 0" MaxDropDownHeight="1000"

ItemsSource="{Binding MultiCropTypes}" SelectedValue="{Binding SelectedMultiCropTypeId, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged, ValidatesOnDataErrors=True}"

Tag="{Binding MultiCropTypes}" SelectedValuePath="PkMultiCropTypeId">

<telerik:RadComboBox.SelectionBoxTemplate>

<DataTemplate>

<TextBlock Text="{Binding Description, UpdateSourceTrigger=PropertyChanged, Mode=TwoWay}" TextTrimming="CharacterEllipsis" />

</DataTemplate>

</telerik:RadComboBox.SelectionBoxTemplate>

<telerik:RadComboBox.ItemTemplate>

<DataTemplate>

<TextBlock Text="{Binding Name, UpdateSourceTrigger=PropertyChanged, Mode=TwoWay}" TextWrapping="Wrap" Width="900" Margin="0,0,10,0" />

</DataTemplate>

</telerik:RadComboBox.ItemTemplate>

</telerik:RadComboBox>

I can't do this for a GridViewComboBoxColumn because there is no "SelectionBoxTemplate" property.

Is it possible to get the same behavior in a GridViewComboBoxColumn? Any help would be greatly appreciated. Thank you.

GridView

answered on 11 Sep 2013

1 answer

176 views

Button on Node!

Hi,

i use your OrgChart example which work fine. Now i want to place a button on each node. This button is placed in the
<telerik:RadFluitContentControl.LargeContent> next to the toggle button.

On Click i want to open a database mask for this node. How do i get the selected node in my Click-Event?

Thanks
Best Regards
rene

Diagram

answered on 11 Sep 2013

3 answers

225 views

Use Aggregrate Functions with AutoGenerateColumns set to True

Hello,

Is it possible to use the AggregateFunctions CountFunction with AutoGenerateColumns set to True? We have a datasource we would like to connect to without defining each columns in xaml or code. In every example I've always seen the AutoGenerateColumns set to false. As it stands, if I do the same I will either endup with a "blank" column or duplicate.

Kind regards

GridView

answered on 11 Sep 2013

1 answer

148 views

Checkboxes in annotations demo

Hello, I'm just wondering how you guys achieved this feature in the Annotations Chart demo. It seems like that part of the demo is not in the sample code, so it would be interesting to see your approach for that feature (Picture attached).

Please let me know. Thank you.

ChartView

answered on 10 Sep 2013

2 answers

94 views

UI freeze with Windows8 theme

Hello,

I have performance problems with windows 8 theme.
When changing view, my radgridview takes more than 1.5s to appear.
The root cause is not my own code, I don't have this problem with other themes (windows7).

Anyone has had this problem?

Regards,

Laurent

General Discussions

answered on 10 Sep 2013

1 answer

165 views

DataForm + RichTextBox sample

Hi, I was wondering if there is a sample for the integration of RichTextBox in a DataForm?
I would like to use the RichTextBox as a replacement for a "normal" TextBox in a dataForm.

<telerik:DataFormDataField DataMemberBinding="{Binding Description, Mode=TwoWay}"

Label="Description:"

IsEnabled="True"

IsReadOnly="False"

Description="You can enter any information regarding this server in this field.">

<telerik:DataFormDataField.Content>

<telerik:RadRichTextBox x:Name="rtbDescription" Width="450" Height="200"></telerik:RadRichTextBox>

</telerik:DataFormDataField.Content>

</telerik:DataFormDataField>

I understand I'll have to capture certain events to keep the RichTextBox's document in sync with the bound property, and work with a FormatProvider to import/export the RichTextBox document into/from that property.

However, A sample would be much appreciated.

Thanks a lot

DataForm

answered on 10 Sep 2013

5 answers

477 views

DataForm - Validation Example?

Hi,

i'm looking for a working RadDataForm Validation Example. I use a RadDataForm with a newItemTemplate and some DataFormDataFields.But how can i validate this fields bound to a ObservableCollection?

I like this red border with the little red box beside! No example ist helping me
Thanks for helping me!

BestRegards
rene

DataForm

answered on 10 Sep 2013

0 answers

98 views

GroupHaderResource disable/enable

Hi,

for my scheduleview i create "GroupHaderResources" out of a database. These resources are employees and each employee is one group.
Grouping and filtering is running fine. if I create an appointment I set the group in my appointment dialog, ok. But is it possible to disable some
groups out of the grouphaderresource on entering the appointment dialog?

Thanks Regards
Rene

ScheduleView

asked on 10 Sep 2013

8 answers

380 views

How to implement a custom layout algorithm?

We need to create a custom layout algorithm class to be used for laying out nodes. I suppose a certain class needs to be derived, adding necessary logic to handle events such as "new level" etc. Do you have a sample app that demonstrates this technique?

The major reason for our need for a custom layout algorithm is that your algorithms fail for most trees when using custom nodes. It's usually something like 90% correct, but that 10% looks really awful.

More about this issue here:
http://www.telerik.com/community/forums/wpf/diagram/treedown-layout-not-working-for-custom-nodes.aspx

This is what we have now:

var layoutSettings = new TreeLayoutSettings()

{

TreeLayoutType = Telerik.Windows.Diagrams.Core.TreeLayoutType.TreeDown,

HorizontalSeparation = 50d,

UnderneathVerticalTopOffset = 50d,

UnderneathHorizontalOffset = 80d,

ComponentsGridWidth = 2000d,

UnderneathVerticalSeparation = 100,

AnimateTransitions = true

};

this.treeLayout.Layout(this.diagram, layoutSettings);

Result: See treedown.png.
Wanted: See treedown_extended.png

UPDATE: Why not just give us the source code of TreeLayout.cs. That would help a lot!

Diagram

answered on 10 Sep 2013