Questions on UI for WPF Forum

1 answer

170 views

I have problem when make big route for example from Sofia, Bulgaria to Vladivostok, Russia. My code is like your example in 'Demos - Telerik UI for WPF'.
In your example and my program when I add Polyline data in my Visualization Layer
and start move on map or zoom in or zoom out map stopped for few seconds 10 or more the same is in your example.

Map

answered on 15 Jul 2016

6 answers

212 views

[Solved] RadRibbonGallery deselect item

Hello,

I have a RadRibbonGallery bound to a collection of business objects in my view model. When I select an item in the gallery, an action is triggered and after that action, the item in the RibbonGallery should be deselected, so the user can select the same item again.

I tried to implement this by two-way binding the SelectedItem property of the RibbonGallery and in the property setter, set the value to null.

However, selecting works, but setting the SelectedItem to null does not deselect the item.

Is there another way to deselect? I also tried binding to both SelectedItem and SelectedIndex and set the SelectedIndex to -1, but it does also not deselect.

Thanks in advance,

Michael

RibbonView and RibbonWindow

answered on 15 Jul 2016

3 answers

1.6K+ views

[Solved] DependencyProperty.UnsetValue

I get a {"'{DependencyProperty.UnsetValue}' is not a valid value for property 'Background'."}

exception when I double click on a RadTreeListView , selected Item

Are there enough clues as to what to look for?

Version :2016.2.0503

Stack trace:

at System.Windows.DependencyObject.GetEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, RequestFlags requests)
at System.Windows.DependencyObject.GetValueEntry(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, RequestFlags requests)
at System.Windows.DependencyObject.GetValue(DependencyProperty dp)
at System.Windows.Controls.Border.get_Background()
at System.Windows.Controls.Border.OnRender(DrawingContext dc)
at System.Windows.UIElement.Arrange(Rect finalRect)
at System.Windows.Controls.Grid.ArrangeOverride(Size arrangeSize)
at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
at System.Windows.UIElement.Arrange(Rect finalRect)
at System.Windows.Controls.Control.ArrangeOverride(Size arrangeBounds)
at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
at System.Windows.UIElement.Arrange(Rect finalRect)
at Telerik.Windows.Controls.GridView.GridViewCellsPanel.ArrangeVirtualizedCell(GridViewCellBase cell, Size finalSize) in c:\TB\3391\Sources\Controls\GridView\GridView\GridView\Virtualization\GridViewCellsPanel.Virtualization.cs:line 198
at Telerik.Windows.Controls.GridView.GridViewCellsPanel.ArrangeVirtualizedCells(Size finalSize) in c:\TB\3391\Sources\Controls\GridView\GridView\GridView\Virtualization\GridViewCellsPanel.Virtualization.cs:line 101
at Telerik.Windows.Controls.GridView.GridViewCellsPanel.ArrangeOverride(Size finalSize) in c:\TB\3391\Sources\Controls\GridView\GridView\GridView\Virtualization\GridViewCellsPanel.cs:line 260
at Telerik.Windows.Controls.TreeListView.TreeListCellsPanel.ArrangeOverride(Size finalSize) in c:\TB\3391\Sources\Controls\GridView\GridView\TreeListView\TreeListCellsPanel.cs:line 204
at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
at System.Windows.UIElement.Arrange(Rect finalRect)
at MS.Internal.Helper.ArrangeElementWithSingleChild(UIElement element, Size arrangeSize)
at System.Windows.Controls.ItemsPresenter.ArrangeOverride(Size arrangeSize)
at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
at System.Windows.UIElement.Arrange(Rect finalRect)
at System.Windows.Controls.Grid.ArrangeOverride(Size arrangeSize)
at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
at System.Windows.UIElement.Arrange(Rect finalRect)
at System.Windows.Controls.Control.ArrangeOverride(Size arrangeBounds)
at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
at System.Windows.UIElement.Arrange(Rect finalRect)
at System.Windows.Controls.Grid.ArrangeOverride(Size arrangeSize)
at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
at System.Windows.UIElement.Arrange(Rect finalRect)
at System.Windows.Controls.Border.ArrangeOverride(Size finalSize)
at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
at System.Windows.UIElement.Arrange(Rect finalRect)
at System.Windows.Controls.Control.ArrangeOverride(Size arrangeBounds)
at Telerik.Windows.Controls.GridView.GridViewRowItem.ArrangeOverride(Size finalSize) in c:\TB\3391\Sources\Controls\GridView\GridView\GridView\Rows\GridViewRowItem.cs:line 249
at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
at System.Windows.UIElement.Arrange(Rect finalRect)
at Telerik.Windows.Controls.GridView.GridViewVirtualizingPanel.FlatLayoutStrategy.ArrangeOverride(Size finalSize) in c:\TB\3391\Sources\Controls\GridView\GridView\GridView\Virtualization\GridViewVirtualizingPanel.FlatLayoutStrategy.cs:line 874
at Telerik.Windows.Controls.GridView.GridViewVirtualizingPanel.ArrangeOverride(Size finalSize) in c:\TB\3391\Sources\Controls\GridView\GridView\GridView\Virtualization\GridViewVirtualizingPanel.cs:line 357

The code looks like this:

(MouseDoubleClick below, does not get called)

<telerik:RadTreeListView
Grid.Row="1"
ItemsSource="{Binding Contacts}"
SelectionMode="Single"
SelectionUnit="FullRow"
MouseDoubleClick="Control_OnMouseDoubleClick"
SelectedItem="{Binding SelectedInvoice, Mode=TwoWay}"
AutoGenerateColumns="False">

<telerik:RadTreeListView.ChildTableDefinitions>
<telerik:TreeListViewTableDefinition ItemsSource="{Binding Invoices}" />
</telerik:RadTreeListView.ChildTableDefinitions>
<telerik:RadTreeListView.Columns>
<telerik:GridViewDataColumn DataMemberBinding="{Binding Name}"
Header="Name" />

<telerik:GridViewDataColumn DataMemberBinding="{Binding Number}"
Header="Number" />
<telerik:GridViewDataColumn DataMemberBinding="{Binding Date, Converter={businessControls:DateConverter}}"
Header="Due Date" />
<telerik:GridViewDataColumn DataMemberBinding="{Binding Total, Converter={converters1:CurrencyConverter}}"
Header="Total" />
<telerik:GridViewDataColumn DataMemberBinding="{Binding Balance, Converter={converters1:CurrencyConverter}}"
Header="Balance" />
<telerik:GridViewDataColumn DataMemberBinding="{Binding Allocated, Converter={converters1:CurrencyConverter}}"
Header="Allocated" />
</telerik:RadTreeListView.Columns>

</telerik:RadTreeListView>

TreeListView

answered on 15 Jul 2016

5 answers

476 views

Select a row from ViewModel

How do I select a spesific row from my ViewModel (we're using mvvm pattern and no codebehind)? I have tried several approaches with no luck. Tried to set SelectedItem, tried to set CurrentItem, IsSynchronizedWithCurrentItem true/false. Nothing seems to help. Debugging the ViewModel shows that the row is selected, but the Gui is not updated.

GridView

answered on 14 Jul 2016

1 answer

452 views

PdfViewer print makes UI unresponsive

When we print any large (10-500 pages) document using WPF PdfViewer the UI becomes unresponsive. For the document with 100 pages it might take minutes. Are there any solutions for PdfViewer that improve User Experience printing large documents? To be more specific, is there a way to:

Show the progress bar with number of pages completed and left or % done with "Cancel" printing job button

OR

any other solution that would help to implement asynchronous printing?

PDFViewer

answered on 14 Jul 2016

1 answer

157 views

Metro style for JUST radGridView

Hi,

While for all major UI apps my organization is using RagGridView, for a side project that crept up a few months back, we need just the RadGridView. The app in question already has metro style implemented using a third party UI framework. We need just the radgridview in this app and since the app has a metro looking UI, we want the radgridview to sport the metro look.

Can someone please point out how to use achieve this without affecting the entire application's look and feel (I mean thememanager, affects the entire application)?

regards,

Sid

GridView

answered on 14 Jul 2016

1 answer

413 views

Dynamically apply CellStyleSelector from code behind

I have a cellstyleselector

public class MyStyleSelector : StyleSelector
{
public override Style SelectStyle(object item, DependencyObject container)
{
return MyStyle;
}
public Style MyStyle { get; set; }
}

I have a grid called DashboardGrid where I add columns in the code behind as they are dependent on columns which the user wants to see. I do this in the following code.

foreach (var deliverable in viewModel.Profile.Deliverables)
{

GridViewDataColumn myColumn = new GridViewDataColumn();
myColumn.DataMemberBinding = new Binding(deliverable.Path + ".My")
{
Converter = dateToWeekNumberConverter //Using a converter
};
myColumn.Header = "Col1";
myColumn.UniqueName = deliverable.Path + ".My";
Style style = new Style(typeof(GridViewCell));
Setter setter = new Setter(GridViewCell.BackgroundProperty, new Binding(deliverable.Path + ".MyBackgroundBrush"));
style.Setters.Add(setter);
DeliverableStyleSelector deliverableStyle = new DeliverableStyleSelector();
deliverableStyle.DeliverableStyle = style;
myColumn.CellStyleSelector = deliverableStyle;
this.DashBoardGrid.Columns.Add(myColumn);

GridViewDataColumn myColumn2 = new GridViewDataColumn();
myColumn2.DataMemberBinding = new Binding(deliverable.Path + ".My2")
{
Converter = dateToWeekNumberConverter //Using a converter
};
myColumn2.Header = "Col1";
myColumn2.UniqueName = deliverable.Path + ".My2";
Style style = new Style(typeof(GridViewCell));
Setter setter = new Setter(GridViewCell.BackgroundProperty, new Binding(deliverable.Path + ".MyBackgroundBrush2"));
style.Setters.Add(setter);
DeliverableStyleSelector deliverableStyle = new DeliverableStyleSelector();
deliverableStyle.DeliverableStyle = style;
myColumn2.CellStyleSelector = deliverableStyle;
this.DashBoardGrid.Columns.Add(myColumn2);

}

When 'My' > 'My2' then the MyBackgroundBrush is changed to Brushes.GreenYellow. The code works fine until I scroll through the grid. Then the cell styles are gone. PFA the screenshots. Please help me.

Note: I can't add the styles in the xaml as I dont know how many deliverables are going to come. It can range from 1 deliverable to 100 and their setter is dependent on the MyBackgroundBrush and binding, deliverable.Path whose values again will be different as the deliverables.

GridView

answered on 14 Jul 2016

6 answers

240 views

Column header filter spacing issue

I have defined a simple grid as follows:

<Grid Margin="20">

<Grid.RowDefinitions>

<RowDefinition Height="50" />

<RowDefinition Height="30" />

<RowDefinition />

</Grid.RowDefinitions>

<TextBlock Grid.Column="0" />

<Border BorderBrush="LightGray" BorderThickness="1" Grid.Row="1" />

<telerik:RadGridView x:Name="gridTradePackages"

Grid.Row="2" BorderThickness="1,0,1,1"

AutoGenerateColumns="True">

</telerik:RadGridView>

</Grid>

I'm then simply binding an observablecollection to the grid.

The issue I have is why I have odd spacing of the filter selector in the column header and why the filtered list (when clicked) is centered? I have removed every property of the grid right down to auto generating columns but am lost as to why this should occur. I haver attached a screen shot that shows the behaviour.

GridView

answered on 14 Jul 2016

24 answers

198 views

Can not print (edit) data in a cell in edit mode.

Hi! Our colleague Eugene writes periodically in your forum. We use RadTreeListView in our project. As datasource for RadTreeListView we use an ObservableCollection containing hierarchical data. This hierarchical data are displayed in RadTreeListView perfectly well. Please see "Picture.PNG" file attached. But we can't edit information in any cell in second column. When the user does doubleclick on a cell and this cell is switched in edit mode then the data in the cell disappears and the user can't print the new data there. Please see the cell image in edit mode in "Picture2.PNG" file attached. Below is XAML concerning RadTreeListView in our application:

<telerik:RadTreeListView Grid.Row="2" Grid.Column="0" AutoGenerateColumns="False" AutoExpandItems="True" IsSynchronizedWithCurrentItem="True"

ItemsSource="{Binding ProfileTreeRoot.ChildProfileElenents}">

<telerik:RadTreeListView.ChildTableDefinitions>

<telerik:TreeListViewTableDefinition ItemsSource="{Binding ChildProfileElenents}"/>

</telerik:RadTreeListView.ChildTableDefinitions>

<telerik:RadTreeListView.Columns>

<telerik:GridViewDataColumn IsReadOnly="True" DataMemberBinding="{Binding Name}" Header="Наименование">

<telerik:GridViewDataColumn.CellStyle>

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

<Setter Property="FontWeight" Value="SemiBold"/>

</Style>

</telerik:GridViewDataColumn.CellStyle>

</telerik:GridViewDataColumn>

<telerik:GridViewDataColumn DataMemberBinding="{Binding CurrentValue}" Header="Текущее значение"/>

</telerik:RadTreeListView.Columns>

</telerik:RadTreeListView>

Where 'ProfileTreeRoot.ChildProfileElements' is ObservableCollection instance. 'ProfileTreeRoot' itself is the instance of Group class where ObservableCollection is. Below is Group class definition. You can see 'ChildProfileElements' ObservableCollection definition there.

public class Group : ProfileElementType

{

#region Fields

private string name;

private string description;

private ObservableCollection<ProfileElementType> _childProfileElenents;

private Group parent;

#endregion

#region Constructors

public Group()

{

this.ElementType = this.GetType();

this.ElementTypeName = this.ElementType.Name;

this.Name = "Group 1";

this.ChildProfileElenents = new ObservableCollection<ProfileElementType>();

}

#endregion

#region Properties

[Display(Description = "The Name of this Group.", Name = "The Name")]

public string Name

{

get { return this.name; }

set { this.SetProperty(ref this.name, value); }

}

[Display(Description = "The Brief Description of this Group", Name = "The Description")]

public string Description

{

get { return this.description; }

set { this.SetProperty(ref this.description, value); }

}

/// <summary>

/// The collection of elements which are the children elements of this group.

/// These elements can be of Group class instances or Register class instances

/// </summary>

[Browsable(false)]

public ObservableCollection<ProfileElementType> ChildProfileElenents

{

get { return this._childProfileElenents; }

set { this.childProfileElenents = value; }

}

/// <summary>

/// Parent group whose ChildProfileElenents collection comprises this Group instance.

/// </summary>

[Browsable(false)]

public Group Parent

{

get { return this.parent; }

set { this.parent = value; }

}

#endregion

}

Group class reprecents group containing some registers and some other groups. As you can see the ObservableCollection in Group is defined as the follow:

private ObservableCollection<ProfileElementType> _childProfileElenents;

Below the definition of ProfileElementType class and Register class. First 'Register' class is shown:

public class Register : ProfileElementType

{

#region Fields

private int number;

private string name;

private string description;

private string currentValue;

private string defaultValue;

private string minimalValue;

private string maximalValue;

private string dataTypeName;

private RegisterDataAccess accessToData;

private Group parent;

#endregion

#region Constructors

public Register()

{

this.ElementType = this.GetType();

this.ElementTypeName = this.ElementType.Name;

this.Name = "REgister 1";

this.AccessToData = RegisterDataAccess.Read_Write;

}

#endregion

#region Properties

[Display(Description = "Register Address.", Name = "The Address", GroupName = "Common Information")]

public int Number

{

get { return this.number; }

set { this.SetProperty(ref this.number, value); }

}

[Display(Description = "Register Name.", Name = "The Name", GroupName = "Common Information")]

public string Name

{

get { return this.name; }

set { this.SetProperty(ref this.name, value); }

}

[Display(Description = "Breif description.", Name = "The Description", GroupName = "Common Information")]

public string Description

{

get { return this.description; }

set { this.SetProperty(ref this.description, value); }

}

[Display(Description = "Register current value.", Name = "Current Value", GroupName = "Data")]

public string CurrentValue

{

get { return this.currentValue; }

set { this.SetProperty(ref this.currentValue, value); }

}

[Display(Description = "Register default value.", Name = "Default value", GroupName = "Data")]

public string DefaultValue

{

get { return this.defaultValue; }

set { this.SetProperty(ref this.defaultValue, value); }

}

[Display(Description = "Register Minimal Value.", Name = "Minimal Value", GroupName = "Data")]

public string MinimalValue

{

get { return this.minimalValue; }

set { this.SetProperty(ref this.minimalValue, value); }

}

[Display(Description = "Register Maximal Value.", Name = "Maximal Value", GroupName = "Data")]

public string MaximalValue

{

get { return this.maximalValue; }

set { this.SetProperty(ref this.maximalValue, value); }

}

[Display(Description = "Register Data Type.", Name = "Data Type", GroupName = "Data")]

public string DataTypeName

{

get { return this.dataTypeName; }

set { this.SetProperty(ref this.dataTypeName, value); }

}

[Display(Description = "Access to Register Data.", Name = "Data Access", GroupName = "Data")]

public RegisterDataAccess AccessToData

{

get { return this.accessToData; }

set { this.SetProperty(ref this.accessToData, value); }

}

/// <summary>

/// Parent group whose ChildProfileElenents collection comprises this Register instance.

/// </summary>

[Browsable(false)]

public Group Parent

{

get { return this.parent; }

set { this.parent = value; }

}

#endregion

}

And here is ProfileElementType class definition:

public class ProfileElementType : BindableBase, IProfileElementType

{

#region Fields

private string _elementTypeName;

#endregion

#region Properties

[Browsable(false)]

public string ElementTypeName

{

get { return this._elementTypeName; }

set { this._elementTypeName = value; }

}

#endregion

#region IProfileElementType Implementation

private Type _elementType;

[Browsable(false)]

public Type ElementType

{

get { return this._elementType; }

set { this._elementType = value; }

}

#endregion

}

Can we (in our case) edit cells in RadTreeListViev? After all, if their content is displayed perfectly, then why can not edit it? We really need to get a cell in RadTreeListViev edited. Please help us.

TreeListView

answered on 14 Jul 2016

12 answers

2.4K+ views

Cannot locate resource 'themes\genericvista.xaml' error has place in design time.

I write C# WPF MVVM Prism 6 multimodule application in MS VS 2015. In my application I use your Telerik for WPF library that was updated in May 2016. In one of Prism modules I try to change one of the views from PrismUserControl(WPF) to telerik:RadWindow (as you have written in your instruction on: http://docs.telerik.com/devtools/wpf/controls/radwindow/how-to/use-radwindow-as-user-control). But when I create RadWindow according to abovementioned instruction then the following error has place: "XamlObjectWriterException: Setting of "System.Windows.ResourceDictionary.Source" property throws an exception".

StackTrace

in MS.Internal.Xaml.Runtime.ClrObjectRuntime.SetValue(Object inst, XamlMember property, Object value)

in MS.Internal.Xaml.Runtime.PartialTrustTolerantRuntime.SetValue(Object obj, XamlMember property, Object value)

in System.Xaml.XamlObjectWriter.Logic_ApplyPropertyValue(ObjectWriterContext ctx, XamlMember prop, Object value, Boolean onParent)

in System.Xaml.XamlObjectWriter.Logic_DoAssignmentToParentProperty(ObjectWriterContext ctx)

in System.Xaml.XamlObjectWriter.Logic_AssignProvidedValue(ObjectWriterContext ctx)

in System.Xaml.XamlObjectWriter.WriteEndMember()

in System.Xaml.XamlWriter.WriteNode(XamlReader reader)

in System.Xaml.XamlServices.Transform(XamlReader xamlReader, XamlWriter xamlWriter, Boolean closeWriter)

in System.Xaml.XamlServices.Transform(XamlReader xamlReader, XamlWriter xamlWriter)

in System.Windows.SystemResources.ResourceDictionaries.LoadDictionary(Assembly assembly, String assemblyName, String resourceName, Boolean isTraceEnabled)

in System.Windows.SystemResources.ResourceDictionaries.LoadGenericDictionary(Boolean isTraceEnabled)

in System.Windows.SystemResources.FindDictionaryResource(Object key, Type typeKey, ResourceKey resourceKey, Boolean isTraceEnabled, Boolean allowDeferredResourceReference, Boolean mustReturnDeferredResourceReference, Boolean& canCache)

in System.Windows.SystemResources.FindResourceInternal(Object key, Boolean allowDeferredResourceReference, Boolean mustReturnDeferredResourceReference)

in System.Windows.StyleHelper.GetThemeStyle(FrameworkElement fe, FrameworkContentElement fce)

in System.Windows.FrameworkElement.UpdateThemeStyleProperty()

in System.Windows.FrameworkElement.OnInitialized(EventArgs e)

in Telerik.Windows.Controls.RadWindow.OnInitialized(EventArgs e)

in System.Windows.FrameworkElement.TryFireInitialized()

in System.Windows.FrameworkElement.EndInit()

InnerException Cannot locate resource 'themes\genericvista.xaml'

IOException: Cannot locate resource 'themes\genericvista.xaml'

StackTrace

in MS.Internal.AppModel.ResourcePart.GetStreamCore(FileMode mode, FileAccess access)

in System.IO.Packaging.PackagePart.GetStream(FileMode mode, FileAccess access)

in System.IO.Packaging.PackWebResponse.CachedResponse.GetResponseStream()

in System.IO.Packaging.PackWebResponse.GetResponseStream()

in System.IO.Packaging.PackWebResponse.get_ContentType()

in MS.Internal.WpfWebRequestHelper.GetContentType(WebResponse response)

in MS.Internal.WpfWebRequestHelper.GetResponseStream(WebRequest request, ContentType& contentType)

in System.Windows.ResourceDictionary.set_Source(Uri value)

in System.Windows.Baml2006.WpfSharedBamlSchemaContext.<>c.<Create_BamlProperty_ResourceDictionary_Source>b__342_0(Object target, Object value)

in System.Windows.Baml2006.WpfKnownMemberInvoker.SetValue(Object instance, Object value)

in MS.Internal.Xaml.Runtime.ClrObjectRuntime.SetValue(XamlMember member, Object obj, Object value)

in MS.Internal.Xaml.Runtime.ClrObjectRuntime.SetValue(Object inst, XamlMember property, Object value)

.InnerException: No

Moreover. If I add in XAML, for example, telerik:RadButton or telerik:RadTreView then (in design-time) "Cannot locate resource 'themes\genericvista.xaml' error occurs.

Below I dusplay contents of App.XAML file from Shell project of my application solution:

<Application x:Class="FlowmeterConfigurator.App"

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

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

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

xmlns:local="clr-namespace:FlowmeterConfigurator"

xmlns:views="clr-namespace:FlowmeterConfigurator.Views">

<Application.Resources>

<ResourceDictionary>

<ResourceDictionary.MergedDictionaries>

<ResourceDictionary Source="/Telerik.Windows.Themes.Office2013;component/Themes/System.Windows.xaml" />

<ResourceDictionary Source="/Telerik.Windows.Themes.Office2013;component/Themes/Telerik.Windows.Controls.xaml" />

<ResourceDictionary Source="/Telerik.Windows.Themes.Office2013;component/Themes/Telerik.Windows.Controls.Navigation.xaml" />

<ResourceDictionary Source="/Telerik.Windows.Themes.Office2013;component/Themes/Telerik.Windows.Controls.Docking.xaml" />

</ResourceDictionary.MergedDictionaries>

<Style TargetType="views:Shell" BasedOn="{StaticResource RadWindowStyle}" />

</ResourceDictionary>

</Application.Resources>

</Application>

What the reason of "Cannot locate resource 'themes\genericvista.xaml' error ? How to eliminate it? Please help.

Window

answered on 13 Jul 2016