Questions on UI for WPF Forum

25,623 questions

1 answer

277 views

merged dictionary

Hello Telerik Team,
i have a user control Project. I declared the theme files in MergedDictionaries to style the ganttcontrol.
The structure is designed as Mvvm. When i start the Application i get a Null reference exception.
How can i fix this issue? Thank you and regards Robert ...

<UserControl

x:Class="GanttView.GanttControl"

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"

xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"

xmlns:d="http://schemas.microsoft.com/expression/blend/2008"

xmlns:vm="clr-namespace:GanttViewModel;assembly=GanttViewModel"

DataContext="{DynamicResource GanttViewModel}"

mc:Ignorable="d" d:DesignHeight="1024" d:DesignWidth="1280">

<UserControl.Resources>

<ResourceDictionary>

<vm:GanttControlViewModel x:Key="GanttViewModel"/>

<ResourceDictionary.MergedDictionaries>

<ResourceDictionary Source="pack://application:,,,/GanttView;component/Themes/System.Windows.xaml"/>

<ResourceDictionary Source="pack://application:,,,/GanttView;component/Themes/Telerik.Windows.Controls.xaml"/>

<ResourceDictionary Source="pack://application:,,,/GanttView;component/Themes/Telerik.Windows.Controls.GanttView.xaml"/>

</ResourceDictionary.MergedDictionaries>

</ResourceDictionary>

</UserControl.Resources>

GanttView

answered on 26 Aug 2014

7 answers

476 views

[Solved] Autocomplete Textbox

Hi,

I wonder if Telerik WPF controls has a textbox that supports autocomplete as the user types in, similar to the Google search textbox (not a combo box). I have a repository of around 4000 items that I want bind as the data source for this autocomplete, and display a matching result as the user types (just top 7 or 8 of course). With Each new character typed, the suggested list get updated accordingly from those 4000 items.

Any suggestion how to achieve this behavior?

Regards

General Discussions

answered on 26 Aug 2014

3 answers

356 views

AutoComplete and database query

Hello,

We want to create an AutoComplete (or RadComboBox IsEditable=true) binded to a collection of 60.000 items so we would like that the control create the query in database (with like % for exemple) as to the user type the keyword and view the result in the choice popup of the combo

How to do this ?
Thx

AutoCompleteBox

answered on 26 Aug 2014

1 answer

688 views

RadGridView Drag & Drop

Hello,

I'm working on a WPF application with ListViews and a pretty complex drag & drop functionality that I made.
I've replaced the ListViews with RadGridViews to achieve data virtualization.
I would like to use the existing drag and drop functionality with the RadGridView, can you please give me some info on how it can be done?

I've tried attaching the appropriate event handlers but it doesn't seem to work :

private void radGridView_Loaded(object sender, RoutedEventArgs e)

{

initInnerPlaylistControl(sender as RadGridView);

}

public void initInnerPlaylistControl(RadGridView itemsControl)

{

itemsControl.AllowDrop = true;

itemsControl.PreviewMouseLeftButtonDown += Rad_OnPreviewMouseLeftButtonDown;

itemsControl.Drop += Rad_Drop;

itemsControl.MouseMove += Rad_OnMouseMove;

itemsControl.PreviewMouseLeftButtonUp += itemsControl1_OnPreviewMouseLeftButtonUp;

itemsControl.QueryContinueDrag += Database_OnPreviewQueryContinueDrag;

//itemsControl.OnGiveFeedback += OnGiveFeedback;

}

thanks,
Idan

DragAndDrop

answered on 26 Aug 2014

3 answers

381 views

Filtering on DateTime values

I have a column of Datetimes that have unique times for same dates. I want to not show the duplicates when filtering.
Based on this page http://www.telerik.com/help/wpf/gridview-filtering-faq-datetime-filtering.html all I need to do is write the following
DataMemberBinding="{Binding BirthDate.Date}"

However all this does is remove the filter completely..

Any suggestions ?

thanks

GridView

answered on 26 Aug 2014

1 answer

125 views

[Solved] Calendar and Styling Issue

Hello,

I am experiencing a problem with the Calendar when applying a custom style : when any style is applied on an instance of the RadCalendar, the Calendar UI is not correctly updating when switching from a month to another, and selected values become inconsistent.

This can be easilly reproduced by adding a RadCalendar such as :

<telerik:RadCalendar HorizontalAlignment="Left" Height="299" Margin="10,10,0,0" VerticalAlignment="Top" Width="497" Style="{DynamicResource RadCalendarStyle1}"/>

, RadCalendarStyle1 beeing a copy of the unmodified original RadCalendar Template (created via Blend "Edit a Template" -> "Edit a Copy" menu).

I can provide the project files if needed.

Regards,

Calendar

answered on 26 Aug 2014

9 answers

248 views

[Solved] Building Source for deployment

I am trying to follow the instructions to create protected Telerik assemblies for deployment with my WPF application.

I see that in each control folder there is are two WPF solutions (among others)
*_WPF.sln
*_WPF_Work.sln

What is the _Work version for? I assume I should use the *_WPF.sln version?
Was there some guidance in the documentation about that question that I overlooked?

However, when I build either version I get errors. I already successfully built the Core\XCore_WPF.sln solution.

Here is an example of an error I get when building the ImageEditor control: (either of the two WPF solutions)

Error 3 Unknown build error, 'The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040) Line 837 Position 26.' D:\Dev\Telerik\Telerik_UI_for_WPF_Source_2014_1_0331\Controls\ImageEditor\ImageEditor\themes\GenericOfficeBlack.xaml 837 26

General Discussions

answered on 22 Aug 2014

1 answer

141 views

Clicking "Maximize" icon in RadTileViewItem header does nothing.

Hello,

I am trying to customize my RadTileViewItem header using one of your ResourceDictionary, I downloaded from one of your examples in the forums. It worked nicely and I am able to change the color and effects in the header.

<ResourceDictionary 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">

<SolidColorBrush x:Key="TileView_Background" Color="#FFFFFFFF"/>

<SolidColorBrush x:Key="TileView_OuterBorder" Color="#FF848484"/>

<SolidColorBrush x:Key="TileView_InneBorder" Color="#FFFFFFFF"/>

<Thickness x:Key="TileView_InneBorder_Thickness">1</Thickness>

<SolidColorBrush x:Key="TileView_HeaderBorder" Color="#FFFFFFFF"/>

<Thickness x:Key="TileView_HeaderBorder_Thickness">0 0 0 1</Thickness>

<LinearGradientBrush x:Key="TileView_HeaderBackground" EndPoint="0.5,1" StartPoint="0.5,0">

<GradientStop Color="#78C3B8"/>

<GradientStop Color="#96C4BE" Offset="1"/>

</LinearGradientBrush>

<LinearGradientBrush x:Key="TileView_ButtonBackground" EndPoint="0.5,1" StartPoint="0.5,0">

<GradientStop Color="#000000"/>

<GradientStop Color="#000000" Offset="1"/>

</LinearGradientBrush>

<SolidColorBrush x:Key="TileView_ButtonOuterBorder" Color="White"/>

<LinearGradientBrush x:Key="TileView_ButtonBackground_MouseOver" EndPoint="0.5,1" StartPoint="0.5,0">

<GradientStop Color="#78C3B8" Offset="0"/>

<GradientStop Color="#78C3B8" Offset="1"/>

<GradientStop Color="#96C4BE" Offset="0.526"/>

<GradientStop Color="#96C4BE" Offset="0.509"/>

</LinearGradientBrush>

<LinearGradientBrush x:Key="TileView_ButtonBackground_Pressed" EndPoint="0.5,1" StartPoint="0.5,0">

<GradientStop Color="#FFFECE95" Offset="0"/>

<GradientStop Color="#FFFEB407" Offset="1"/>

<GradientStop Color="#FFFEBB6E" Offset="0.517"/>

<GradientStop Color="#FFE78318" Offset="0.539"/>

</LinearGradientBrush>

<CornerRadius x:Key="TileView_HeaderBorder_CornerRadius">2</CornerRadius>

<SolidColorBrush x:Key="TileView_HeaderBorder_HorizontalSplitterBackground" Color="#47B5A3"/>

<LinearGradientBrush x:Key="TileView_HeaderBorder_HorizontalSplitterOpacityMask" EndPoint="0.5,1" StartPoint="0.5,0">

<GradientStop Color="Black" Offset="0"/>

<GradientStop Offset="1"/>

</LinearGradientBrush>

<SolidColorBrush x:Key="DisabledBrush" Color="#99FFFFFF"/>

<CornerRadius x:Key="TileView_InneBorder_CornerRadius">8</CornerRadius>

<CornerRadius x:Key="TileView_OuterBorder_CornerRadius">5</CornerRadius>

<Style TargetType="telerik:RadTileViewItem">

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

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

<Setter Property="Background" Value="{StaticResource TileView_Background}"/>

<Setter Property="BorderBrush" Value="{StaticResource TileView_OuterBorder}"/>

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

<Setter Property="Padding" Value="7"/>

<Setter Property="TileState" Value="Restored"/>

<Setter Property="Template">

<Setter.Value>

<ControlTemplate TargetType="telerik:RadTileViewItem">

<Grid>

<VisualStateManager.VisualStateGroups>

<VisualStateGroup x:Name="CommonStates">

<VisualState x:Name="Normal"/>

<VisualState x:Name="Disabled">

<Storyboard>

<ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="Visibility" Storyboard.TargetName="DisabledVisual">

<DiscreteObjectKeyFrame KeyTime="0" Value="Visible"/>

</ObjectAnimationUsingKeyFrames>

</Storyboard>

</VisualState>

<VisualState x:Name="MouseOver"/>

</VisualStateGroup>

</VisualStateManager.VisualStateGroups>

<Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" CornerRadius="{StaticResource TileView_OuterBorder_CornerRadius}" Margin="{TemplateBinding Padding}">

<Border BorderBrush="{StaticResource TileView_InneBorder}" BorderThickness="{StaticResource TileView_InneBorder_Thickness}" CornerRadius="{StaticResource TileView_InneBorder_CornerRadius}">

<Grid>

<Grid.RowDefinitions>

<RowDefinition Height="Auto"/>

<RowDefinition Height="*"/>

</Grid.RowDefinitions>

<ContentPresenter x:Name="ContentElement" ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Grid.Row="1" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>

<Grid x:Name="ContentCacheHost" Grid.Row="1"/>

<StackPanel>

<Border BorderBrush="{StaticResource TileView_HeaderBorder}" BorderThickness="{StaticResource TileView_HeaderBorder_Thickness}" CornerRadius="{StaticResource TileView_HeaderBorder_CornerRadius}" Padding="10 0 7 0">

<Border.Background>

<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">

<GradientStop Color="#69AEA4"/>

<GradientStop Color="#96C4BE" Offset="1"/>

</LinearGradientBrush>

</Border.Background>

<Grid MinHeight="28">

<Border x:Name="GripBarElement" Background="Transparent">

<ContentPresenter x:Name="HeaderElement" ContentTemplate="{TemplateBinding HeaderTemplate}" HorizontalAlignment="Left" Margin="0,0,10,0" VerticalAlignment="Center"/>

</Border>

<ToggleButton x:Name="MaximizeToggleButton" HorizontalAlignment="Right" Height="17" VerticalAlignment="Center" Width="17">

<ToggleButton.Template>

<ControlTemplate TargetType="ToggleButton">

<Grid>

<VisualStateManager.VisualStateGroups>

<VisualStateGroup x:Name="FocusStates">

<VisualState x:Name="Focused"/>

<VisualState x:Name="Unfocused"/>

</VisualStateGroup>

<VisualStateGroup x:Name="CommonStates">

<VisualState x:Name="Disabled"/>

<VisualState x:Name="Normal"/>

<VisualState x:Name="MouseOver">

<Storyboard>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Fill" Storyboard.TargetName="RestoreIcon">

<DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource TileView_ButtonBackground_MouseOver}"/>

</ObjectAnimationUsingKeyFrames>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Fill" Storyboard.TargetName="CollapseIcon">

<DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource TileView_ButtonBackground_MouseOver}"/>

</ObjectAnimationUsingKeyFrames>

</Storyboard>

</VisualState>

<VisualState x:Name="Pressed">

<Storyboard>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Fill" Storyboard.TargetName="RestoreIcon">

<DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource TileView_ButtonBackground_Pressed}"/>

</ObjectAnimationUsingKeyFrames>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Fill" Storyboard.TargetName="CollapseIcon">

<DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource TileView_ButtonBackground_Pressed}"/>

</ObjectAnimationUsingKeyFrames>

</Storyboard>

</VisualState>

</VisualStateGroup>

<VisualStateGroup x:Name="CheckStates">

<VisualState x:Name="Checked">

<Storyboard>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Visibility" Storyboard.TargetName="Restore">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<Visibility>Collapsed</Visibility>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Visibility" Storyboard.TargetName="Collapse">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<Visibility>Visible</Visibility>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

</Storyboard>

</VisualState>

<VisualState x:Name="Unchecked">

<Storyboard>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Visibility" Storyboard.TargetName="Restore">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<Visibility>Visible</Visibility>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Visibility" Storyboard.TargetName="Collapse">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<Visibility>Collapsed</Visibility>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

</Storyboard>

</VisualState>

<VisualState x:Name="Indeterminate"/>

</VisualStateGroup>

</VisualStateManager.VisualStateGroups>

<Grid x:Name="Restore" Background="Transparent" Height="13" Width="13">

<ToolTipService.ToolTip>

<ToolTip telerik:LocalizationManager.ResourceKey="TileViewItemMaximizeText"/>

</ToolTipService.ToolTip>

<Path x:Name="RestoreIcon" Data=

"M2,5 L2,8.9999999 6,8.9999999 6,5 z M0,3 L8,3 8,5 8,8.9999999 8,11 0,11 0,8.9999999 0,5 z M3,0 L11,0 11,2 11,8.9999999 9,8.9999999 9,2 3,2 z"

Fill="{StaticResource TileView_ButtonBackground}" Margin="1" Stretch="Fill" Stroke="{x:Null}" StrokeThickness="0.5"/>

<Path Data=

"M1,12 L9,12 9,13 1,13 z M3.9999999,7 L3.9999999,9 6,9 6,7 z M3,6 L7,6 7,7 7,9 7,10 3,10 3,9 3,7 z M0,4 L1,4 1,12 0,12 z M12,1 L13,1 13,10 12,10 z M3,1 L3.9999999,1 3.9999999,3 10,3 10,4 10,10 12,10 12,11 10,11 10,12 9,12 9,4 1,4 1,3 3,3 z M3.9999999,0 L12,0 12,1 3.9999999,1 z"

Fill="{StaticResource TileView_ButtonOuterBorder}" Stretch="Fill" Stroke="{x:Null}" StrokeThickness="0.5"/>

</Grid>

<Grid x:Name="Collapse" Background="Transparent" Height="5" Visibility="Collapsed" Width="12">

<ToolTipService.ToolTip>

<ToolTip telerik:LocalizationManager.ResourceKey="TileViewItemMinimizeText"/>

</ToolTipService.ToolTip>

<Rectangle Fill="{StaticResource TileView_ButtonOuterBorder}" Stroke="{x:Null}" StrokeThickness="0.5"/>

<Rectangle x:Name="CollapseIcon" Fill="{StaticResource TileView_ButtonBackground}" Margin="1" Stroke="{x:Null}" StrokeThickness="0.5"/>

</Grid>

</ControlTemplate>

</ToggleButton.Template>

</ToggleButton>

</Grid>

</Border>

<Border x:Name="Splitter" BorderThickness="0" Background="{StaticResource TileView_HeaderBorder_HorizontalSplitterBackground}" Height="4" OpacityMask="{StaticResource TileView_HeaderBorder_HorizontalSplitterOpacityMask}"/>

</StackPanel>

<Rectangle x:Name="DisabledVisual" Fill="{StaticResource DisabledBrush}" RadiusY="4" RadiusX="4" Grid.RowSpan="2" Visibility="Collapsed"/>

</Grid>

</Border>

</Grid>

</ControlTemplate>

</Setter.Value>

</Setter>

</Style>

</ResourceDictionary>

But the issue is, on clicking the maximize button in header it does nothing except changing the icon to minimize. I was expecting it to actually maximize the item. I am guessing that I need to stick some code to make that happen but where to write that code is my confusion.

Can you please suggest anything,

Thanks,
Deepak

P.S: Apologies for sticking a long code but it doesn't allow me to attach a XAML/zip file.

TileView

answered on 22 Aug 2014

2 answers

88 views

IsVirtualizing and PreservePositionWhenMaximized issue

I am having an issue when I have both IsVirtualizing and PreservePositionWhenMaximized set to true.

Here is the window code.

<Window x:Class="TileTest.MainWindow"

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"

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

WindowStartupLocation="CenterScreen">

<Window.Resources>

<DataTemplate x:Key="ItemTemplate">

<TextBlock Text="{Binding}" />

</DataTemplate>

<DataTemplate x:Key="ContentTemplate">

<telerik:RadFluidContentControl>

<telerik:RadFluidContentControl.SmallContent>

<TextBlock Text="small" />

</telerik:RadFluidContentControl.SmallContent>

<telerik:RadFluidContentControl.Content>

<TextBlock Text="default" />

</telerik:RadFluidContentControl.Content>

<telerik:RadFluidContentControl.LargeContent>

<TextBlock Text="large" />

</telerik:RadFluidContentControl.LargeContent>

</telerik:RadFluidContentControl>

</DataTemplate>

</Window.Resources>

<Grid>

<telerik:RadTileView x:Name="radTileView"

ContentTemplate="{StaticResource ContentTemplate}"

ItemTemplate="{StaticResource ItemTemplate}"

MinimizedColumnWidth="200"

MinimizedRowHeight="200"

PreservePositionWhenMaximized="True"

IsVirtualizing="True"

/>

</Grid>

</Window>

Here is the code behind.

using System;

using System.Collections.Generic;

using System.Linq;

using System.Windows;

namespace TileTest

{

public partial class MainWindow : Window

{

public MainWindow()

{

InitializeComponent();

var data = new List<string>();

foreach (var num in Enumerable.Range(1, 12))

{

data.Add(String.Format("Item {0}", num));

}

this.radTileView.ItemsSource = data;

}

This gives a view with 12 items. If I double click the header of "item 1", it will maximize. If I scroll down to "item 12"
and double click it, it will maximize and the scroll possition will change slightly. If I scroll to the top of the small list, "item 1" is gone. If I restore "item 12" (all items normal size), "item 1" reappears.

If I set either the IsVirtualizing or PreservePositionWhenMaximized to false, the items do not "disappear". PreservePositionWhenMaximized needs to be true for our impementaion and disabling virualization is less than ideal.

Any ideas?

Ryan

TileView

answered on 22 Aug 2014

4 answers

447 views

combobox as suggestion/autocomplete from database

I'm able to get items from a database into a combobox, but it's querying way too much data. Also, the selected item isn't displaying the string I expected. Instead, it's showing the object type as a string. I clearly don't understand something and I'm stuck even though I'm following this.

Database table name = CityCountyState, e.g.

City County State

--------- --------- ---------

City1 County1 State1

City1 County2 State1

City2 County3 State2

City3 County4 State3

A city can be in more than one county, which is why I want to use a complex data template:

01.<DataTemplate x:Key="ComboBoxCustomTemplate">

02. <Grid Margin="0,2,0,2">

03. <Grid.ColumnDefinitions>

04. <ColumnDefinition />

05. <ColumnDefinition />

06. </Grid.ColumnDefinitions>

07. <Grid.RowDefinitions>

08. <RowDefinition />

09. <RowDefinition />

10. </Grid.RowDefinitions>

11. <TextBlock TextAlignment="Left" Grid.ColumnSpan="2" Text="{Binding City}" />

12. <StackPanel Grid.Row="1" Grid.Column="0" Orientation="Horizontal">

13. <TextBlock Text="County: " />

14. <TextBlock Foreground="Blue" Text="{Binding County}" />

15. </StackPanel>

16. <StackPanel Grid.Row="1" Grid.Column="1" Orientation="Horizontal">

17. <TextBlock Text="State: " />

18. <TextBlock Foreground="Blue" Text="{Binding State}" />

19. </StackPanel>

20. </Grid>

21.</DataTemplate>

Combo box XAML:

1.<telerik:RadComboBox

2. IsEditable="True"

3. StaysOpenOnEdit="True"

4. ItemsSource="{Binding Path=CitiesCountiesStates}"

5. SelectedItem="{Binding Path=SelectedCityCountyState}"

6. OpenDropDownOnFocus="True"

7. IsFilteringEnabled="True"

8. ItemTemplate="{StaticResource ComboBoxCustomTemplate}" />

Viewmodel:

01.public class AddEditViewModel : ViewModelBase<IDialogView>, IDisposable

02.{

03. private readonly GeotechLogContext context;

04.

05. public ObservableCollection<CityCountyState> CitiesCountiesStates { get; set; }

06. private string _SelectedCityCountyState;

07. public string SelectedCityCountyState

08. {

09. get

10. {

11. return this._SelectedCityCountyState;

12. }

13. set

14. {

15. // This doesn't work, but it's what I want to do in concept.

16. // Value is always a string that equals the object type

17. //

18. // CityCountyState x = (CityCountyState) value;

19. // this._SelectedCityCountyState = x.City + "," + x.County + "," + x.State;

20. this._SelectedCityCountyState = value;

21. }

22. }

23.

24. public AddEditViewModel : base( new AddEditWindow() )

25. {

26. this.context = new GeotechLogContext();

27. this.CitiesCountiesStates = new ObservableCollection<CityCountyState>

28. (this.context.CityCountyStates.ToList<CityCountyState>() );

29. }

30.}

The problem is obviously at line 27/28, but I don't know how to do it.

ComboBox

answered on 22 Aug 2014

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