Questions on UI for WPF Forum

1 answer

90 views

Is there an easy way to change the display order of Categories? The categories are showing up in the display of the Pivot map ( A B ) I want them to show up ( B A ) How do I specify the order?

Thanks
Paul

TreeMap and PivotMap

answered on 10 Jun 2014

3 answers

601 views

HorizontalAlignment of CheckBox Column

Hello,

How can I set the HorizontalAlignment property to "Center" of a CheckBox Column (GridViewDataColumn = boolean)?

Regards,

Henrique

GridView

answered on 09 Jun 2014

11 answers

319 views

Timeline Group Sorting

Hello!
I've implemented DragAndDrop behavior for my TimeLine. But my timelineitemssource have several groups. When I drag items inside the group all is right. Start time in source are changing and visualization occured. My next goal is realise DragAndDrop between groups. And the goal is reached. But sometimes (I can't understand why) group soring is changed. Images attached. I have DataAnnotaion on timeline and it's height and margins depends on groups. When sorting changed occured all my logic breaks. Can you tell me when group sorting occured and what is the rule of sorting. If Group sorting can be disabled it's will be super!
Sorry for my English.

TimeLine

answered on 09 Jun 2014

5 answers

326 views

TextBox.IsReadOnly doesn't work inside RadPropertyGrid.PropertyDefinitions

One TextBox is outside of RadPropertyGrid and One TextBox is inside RadPropertyGrid.  The two are set to IsReadOnly=True, but only the outside one actually show read-only.



Version: Telerik.Windows.Controls.Data, Version=2013.3.1316.45.

Compiled with .Net 4.5

WPF app.

<

Window

x:Class="PropGridTest.MainWindow"

xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

x:Name="ThisControl"

Title="MainWindow" Height="350" Width="525">

<Grid>

<Grid.RowDefinitions>

<RowDefinition Height="Auto"/>

<RowDefinition Height="*"/>

</Grid.RowDefinitions>

<TextBox IsReadOnly="True" Text="Read-only" />

<telerik:RadPropertyGrid

Grid.Row="1"

AutoGeneratePropertyDefinitions="False"

Item="{Binding ElementName=ThisControl}">

<telerik:RadPropertyGrid.PropertyDefinitions>

<telerik:PropertyDefinition

DisplayName="Prop 1"

GroupName="Group 1"

OrderIndex="0">

<telerik:PropertyDefinition.EditorTemplate>

<DataTemplate DataType="telerik:PropertyDefinition">

<TextBox HorizontalAlignment="Left" IsReadOnly="True" Text="Read-only" Width="100"/>

</DataTemplate>

</telerik:PropertyDefinition.EditorTemplate>

</telerik:PropertyDefinition>

</telerik:RadPropertyGrid.PropertyDefinitions>

</telerik:RadPropertyGrid>

</Grid>

</Window>

PropertyGrid

answered on 09 Jun 2014

6 answers

222 views

Specifying a binding for Tile.DisplayIndex causes exception

Hello Telerik,

I'm trying to specify a binding on a tile's displayindex through a style. For some reason i get an exception stating:

System.ArgumentNullException occurred
HResult=-2147467261
Message=Value cannot be null.
Parameter name: property
Source=PresentationFramework
ParamName=property
StackTrace:
at System.Windows.Setter.CheckValidProperty(DependencyProperty property)
InnerException:

This is my style for the tiles:



<!-- Tile Style -->

<Style TargetType="{x:Type telerik:Tile}"

<Setter Property="Background"

<Setter.Value

<LinearGradientBrush

<GradientStop Color=

"{Binding RelativeSource={RelativeSource AncestorType={x:Type telerik:Tile}, Mode=FindAncestor}, Path=Content.Color.StartColor}"

Offset="0.0"

/>

<GradientStop Color=

"{Binding RelativeSource={RelativeSource AncestorType={x:Type telerik:Tile}, Mode=FindAncestor}, Path=Content.Color.EndColor}"

Offset="1.0"

/>

</LinearGradientBrush

</Setter.Value

</Setter

<Setter Property="TileType" Value="{Binding RelativeSource={RelativeSource Mode=Self}, Path=Content.Size, Converter={StaticResource tileTypeConverter}}"

/>

<Setter Property="DisplayIndex" Value="{Binding RelativeSource={RelativeSource AncestorType={x:Type telerik:Tile}, Mode=FindAncestor}, Path=Content.DisplayIndex, Mode=OneTime}" />

</Style>

Am I doing something obviously wrong?

TileList

answered on 09 Jun 2014

3 answers

194 views

Set columns to same width

Hi,

I have a requirement of setting column widths to a uniform value, based on the widest column within a property group description.

Attached is a drawing illustrating the requirement.

Is this possible to do?

Thanks,
Edwin

PivotGrid

answered on 09 Jun 2014

5 answers

335 views

Binding Errors

Hi,

using RadDiagram shows binding errors at debug:

System.Windows.Data Error: 2 : Cannot find governing FrameworkElement or FrameworkContentElement for target element. BindingExpression:Path=StartPoint; DataItem=null; target element is 'PathFigure' (HashCode=17749809); target property is 'StartPoint' (type 'Point')

System.Windows.Data Error: 2 : Cannot find governing FrameworkElement or FrameworkContentElement for target element. BindingExpression:Path=StartBezierPoint; DataItem=null; target element is 'LineSegment' (HashCode=40121966); target property is 'Point' (type 'Point')

System.Windows.Data Error: 2 : Cannot find governing FrameworkElement or FrameworkContentElement for target element. BindingExpression:Path=EndPoint; DataItem=null; target element is 'PathFigure' (HashCode=45256881); target property is 'StartPoint' (type 'Point')

System.Windows.Data Error: 2 : Cannot find governing FrameworkElement or FrameworkContentElement for target element. BindingExpression:Path=EndBezierPoint; DataItem=null; target element is 'LineSegment' (HashCode=41585520); target property is 'Point' (type 'Point')

I ran the "custom connector" from Xaml-skd to check that I have no mistake in my application - shows the same errors.

Manfred

Diagram

answered on 09 Jun 2014

6 answers

177 views

NumericUpDown in ScrollViewer Touch Not Working Properly

Hi

If I place a NumericUpDown control with Windows8Touch theme in a ScrollViewer control, I can no longer hold down the plus or minus buttons to change the value. I can only do individual clicks.

Is there anyway to get round this?

Thanks

Nick

NumericUpDown

answered on 09 Jun 2014

5 answers

481 views

Getting selected row of a child grid

I am having some issues getting the row that is selected in any child grid.

My main grid is a grid of Manufacturers and each row can be expanded to view each manufacturer's parts. This is no problem. The problem is getting the current row with in each expanded child grid. Here is my code so far.

public partial class ManufacturersAndPartsSearch : Window

{

private ViewModels.ManufacturersAndPartsSearchViewModel vm;

public ManufacturersAndPartsSearch()

{

InitializeComponent();

var context = new ViewModels.ManufacturersAndPartsSearchViewModel(this);

this.vm = context;

this.DataContext = vm;

GridViewTableDefinition d = new GridViewTableDefinition();

d.Relation = new Telerik.Windows.Data.PropertyRelation("ChildParts");

//add child table defination to gridview

this.GridView.ChildTableDefinitions.Add(d);

this.GridView.DataLoaded += GridView_DataLoaded;

//this is to alter changes to each child grid

this.GridView.DataLoading += GridView_DataLoading;

//event to check and set the view model's current row to a heirarchial's currently selected row if selected

//explanation

/*The original code used data binding to set the current row in the viewmodel equal to the current row in the grid

this worked for the original purpose; however, since heirarchial grids are created for each row in the parent grid

that has parts saved in the database then there is no way to bind their currently selected row properties to the viewmodel

The databinding was ditched and instead this route was taken which accounts for both types of grids*/

this.GridView.SelectionChanged += GridView_SelectionChanged;

}

void GridView_SelectionChanged(object sender, SelectionChangeEventArgs e)

{

var grid = sender as RadGridView;

var item = grid.SelectedItem;

this.vm.CurrentItem = item;

MessageBox.Show(item.GetType().ToString());

}

When my message box shows I always get a type of "PartsManufacturerViewModel". This would be correct in the parent grid because I am binding to my viewmodel's "ManufacturersAndPartsSearchViewModel.CurrentItem which is of type object. Since I am binding the grid to a collection of PartsManufacturerViewModels then this is expected. When I click on a child row I still get the same type but I should be getting PartViewModel, which is a property inside of PartsManufacturerViewModel.

The basic gist is this. PartsManufacturerViewModel holds data relevant to the manufacturer while it has a property called "ChildParts" which is a collection of PartViewModels (which hold data relevant to the part itself). It is this collection that I bind the ChildTableDefinitions to.

My desired outcome is to be able to set "this.vm.CurrentItem" to either a PartsManufacturerViewModel or a PartViewModel depending on the current row that is clicked once, either in the parent or the child grid.

Here is the rest of my code (ViewModels) if it helps make things clearer.

public class PartsManufacturerViewModel : Accu_Base_Lib.Bases.ModelViewModelBase<DAL.PartsManufacturer>

{

public string Id

{

get { return (string)GetValue(IdProperty); }

set { SetValue(IdProperty, value); }

}

// Using a DependencyProperty as the backing store for Id. This enables animation, styling, binding, etc...

public static readonly DependencyProperty IdProperty =

DependencyProperty.Register("Id", typeof(string), typeof(PartsManufacturerViewModel));

public string Name

{

get { return (string)GetValue(NameProperty); }

set { Debug.WriteLine("ViewModel Name Changed " + this.Name); SetValue(NameProperty, value); }

}

// Using a DependencyProperty as the backing store for Name. This enables animation, styling, binding, etc...

public static readonly DependencyProperty NameProperty =

DependencyProperty.Register("Name", typeof(string), typeof(PartsManufacturerViewModel));

private ObservableCollection<PartViewModel> _childParts;

public ObservableCollection<PartViewModel> ChildParts

{

get

{

if (this._childParts == null)

{

GetChildren();

}

return this._childParts;

}

set

{

this._childParts = value;

}

public PartsManufacturerViewModel(DAL.PartsManufacturer model)

{

base.Init(model);

//Fills this viewmodel based off the model supplied.

UpdateViewModelFromModel();

}

public PartsManufacturerViewModel()

{

base.Init();

this.Model.Id = Guid.NewGuid().ToString();

this.Model.Name = string.Empty;

UpdateViewModelFromModel();

}

public class PartViewModel : Accu_Base_Lib.Bases.ModelViewModelBase<DAL.Part>

{

public string Id

{

get { return (string)GetValue(IdProperty); }

set { SetValue(IdProperty, value); }

}

// Using a DependencyProperty as the backing store for Id. This enables animation, styling, binding, etc...

public static readonly DependencyProperty IdProperty =

DependencyProperty.Register("Id", typeof(string), typeof(PartViewModel));

public string ManufacturerId

{

get { return (string)GetValue(ManufacturerIdProperty); }

set { SetValue(ManufacturerIdProperty, value); }

}

// Using a DependencyProperty as the backing store for ManufacturerId.  This enables animation, styling, binding, etc...

public static readonly DependencyProperty ManufacturerIdProperty =

DependencyProperty.Register("ManufacturerId", typeof(string), typeof(PartViewModel));

public string Name

{

get { return (string)GetValue(NameProperty); }

set { SetValue(NameProperty, value); }

}

// Using a DependencyProperty as the backing store for Name. This enables animation, styling, binding, etc...

public static readonly DependencyProperty NameProperty =

DependencyProperty.Register("Name", typeof(string), typeof(PartViewModel));

public string ModelNo

{

get { return (string)GetValue(ModelNoProperty); }

set { SetValue(ModelNoProperty, value); }

}

// Using a DependencyProperty as the backing store for ModelNo. This enables animation, styling, binding, etc...

public static readonly DependencyProperty ModelNoProperty =

DependencyProperty.Register("ModelNo", typeof(string), typeof(PartViewModel));

public decimal Price

{

get { return (decimal)GetValue(PriceProperty); }

set {

SetValue(PriceProperty, value); }

}

// Using a DependencyProperty as the backing store for Price. This enables animation, styling, binding, etc...

public static readonly DependencyProperty PriceProperty =

DependencyProperty.Register("Price", typeof(decimal), typeof(PartViewModel));

public PartViewModel(DAL.Part model)

{

base.Init(model);

//Fills this viewmodel based off the model supplied.

UpdateViewModelFromModel();

}

public PartViewModel()

{

base.Init();

this.Model.Id = Guid.NewGuid().ToString();

UpdateViewModelFromModel();

}

GridView

answered on 09 Jun 2014

2 answers

104 views

Best theming approach

I have a question about the recommended theming approach to use. I get the feeling that theming aspect of telerik controls has developed a little over the years, and there now appears to be a number of possible approaches, but it's not clear to me which is the best or recommended approach to take.

If we forget about the use of the StyleManager class, from what I can tell you can there are still a number of approaches

1- Link to the required Binaries, link to the theme DLL under the same location and specify a number of resource dictionaries in the format <ResourceDictionary Source="/Telerik.Windows.Themes.Windows8;component/Themes/Telerik.Windows.Controls.xaml" />

2 - Link to the required NoXaml.Binaries, link to the theme DLL under NoXaml.Binaries as well and specify the resource dictionaries as above

3 - Link to the required Binaries, include the required XAML Themes from the Themes.implicit directory as PAge resources and specify the local resource dictionaries as <ResourceDictionary Source="Themes/System.Windows.xaml"/>

4 - Link to the required NoXAML.Binaries, include the required XAML Themes from the Themes.implicit directory as PAge resources and specify the local resource dictionaries as <ResourceDictionary Source="Themes/System.Windows.xaml"/>

What's the differences and which would be the best approach to take?

Cheers

General Discussions

answered on 09 Jun 2014