Questions on UI for WPF Forum

1 answer

81 views

Hide Rows and Columns

How can I hide the rows and columns, but keep the full text search.

GridView

answered on 21 Aug 2017

2 answers

317 views

Scroll problem when Grid's cell contains TreeView

Hi,

I have a little problem with my scroll on RadGridView. One of my column's cell template is RadTreeView. When mouse is over tree, mouse-wheel move does not take affect on RadGridView scroll. When mouse is over any other cell, mouse-wheel scroll works correct, like always. It looks like RadTreeView inside cell is stealing mouse-wheel event and RadGridView doesn't scroll? Because my cell height is adjusting itself to RadTreeView size, there is no scroll bars inside cell, it is ok, I want scroll only on RadGridView.

Thanks for any help!

GridView

answered on 21 Aug 2017

8 answers

367 views

RadDropDownButton Tooltip Also Shows on RadDropDownButton.DropDownContent

I have a RadDropDownButton which DropDownContent is a StackPanel (which in turn contains other controls).

The issue I am having is, defining a Tooltip for the RadDropDownButton results in the Tooltip also being displayed on the dropped-down StackPanel (except for any position that then contains another control).

The intent is only to display the Tooltip on the button itself, and not on the resultant StackPanel that flies out when the button is pressed. Currently the workaround is to have an image displayed on the button and then have the tooltip attached to the image. But, I would like to know if there is a better fix for this.

Buttons

answered on 21 Aug 2017

3 answers

145 views

ImageColumn with binding on URL to a HTTP Resource: ArgumentNullException when Adress not available

As the title says, when I bind an ImageColumn to a URL which points to a an image on the web, I get an exception in the event of the image not being available (for example if the server is down). Is there any way to prevent this?

Value cannot be null.
Parameter name: uriSource

at System.Windows.Media.Imaging.BitmapImage..ctor(Uri uriSource, RequestCachePolicy uriCachePolicy)

at Telerik.Windows.Controls.GridViewImageColumn.Image_ImageFailed(Object sender, ExceptionRoutedEventArgs e)

GridView

answered on 21 Aug 2017

1 answer

259 views

HierarchyChildTemplate. No data is displayed

Hello!

There are the following types of data:

namespace TelerikHierarchyChildTemplate.Model

{

public class WatchList

{

public int WatchListId { get; set; }

public string Moniker { get; set; }

public ICollection<ContentWatchList> Content { get; set; }

}

public class ContentWatchList

{

public int ContentWatchListId { get; set; }

public WatchList ParentWatchList { get; set; }

public Item ItemItem { get; set; }

}

public class Item

{

public int ItemId { get; set; }

public string Moniker { get; set; }

public string Note { get; set; }

public ICollection<ContentWatchList> ContentsWatchLists { get; set; }

}

There is a model (MainViewModel) that in the creation fills the collection. To be filled in correctly :)

using System;

using System.Collections.Generic;

using System.Collections.ObjectModel;

using System.Linq;

using Telerik.Windows.Controls;

using TelerikHierarchyChildTemplate.Model;

namespace TelerikHierarchyChildTemplate

{

public class MainViewModel : ViewModelBase

{

private ObservableCollection<WatchList> _watchListsCollection;

private ObservableCollection<ContentWatchList> _contentWatchListCollection;

private ObservableCollection<Item> _itemsCollection;

public ObservableCollection<WatchList> WatchListsCollection

{

get { return _watchListsCollection; }

set

{

_watchListsCollection = value;

OnPropertyChanged(()=> WatchListsCollection);

}

public ObservableCollection<ContentWatchList> ContentWatchListCollection

{

get { return _contentWatchListCollection; }

set

{

_contentWatchListCollection = value;

OnPropertyChanged(()=>ContentWatchListCollection);

}

public ObservableCollection<Item> ItemsCollection

{

get { return _itemsCollection; }

set

{

_itemsCollection = value;

OnPropertyChanged(()=> ItemsCollection);

}

public MainViewModel()

{

WatchListsCollection = new ObservableCollection<WatchList>

{

new WatchList()

{

WatchListId = 0,

Moniker = "List One",

Content = new List<ContentWatchList>()

},

new WatchList()

{

WatchListId = 1,

Moniker = "List Two",

Content = new List<ContentWatchList>()

},

new WatchList()

{

WatchListId = 2,

Moniker = "List Three",

Content = new List<ContentWatchList>()

}

};

ItemsCollection = new ObservableCollection<Item>

{

new Item()

{

ItemId = 0,

Moniker = "Item One",

Note = "Note One",

ContentsWatchLists = new List<ContentWatchList>()

},

new Item()

{

ItemId = 1,

Moniker = "Item Two",

Note = "Note Two",

ContentsWatchLists = new List<ContentWatchList>()

},

new Item()

{

ItemId = 2,

Moniker = "Item Three",

Note = "Note Tree",

ContentsWatchLists = new List<ContentWatchList>()

},

new Item()

{

ItemId = 3,

Moniker = "Item Four",

Note = "Note Four",

ContentsWatchLists = new List<ContentWatchList>()

}

};

ContentWatchListCollection = new ObservableCollection<ContentWatchList>

{

new ContentWatchList()

{

ContentWatchListId = 0,

ParentWatchList = WatchListsCollection.First(p=>p.WatchListId==0),

ItemItem = ItemsCollection.First(p=>p.ItemId==0)

},

new ContentWatchList()

{

ContentWatchListId = 1,

ParentWatchList = WatchListsCollection.First(p=>p.WatchListId==0),

ItemItem = ItemsCollection.First(p=>p.ItemId==1)

},

new ContentWatchList()

{

ContentWatchListId = 2,

ParentWatchList = WatchListsCollection.First(p=>p.WatchListId==0),

ItemItem = ItemsCollection.First(p=>p.ItemId==2)

},

new ContentWatchList()

{

ContentWatchListId = 3,

ParentWatchList = WatchListsCollection.First(p=>p.WatchListId==1),

ItemItem = ItemsCollection.First(p=>p.ItemId==3)

},

new ContentWatchList()

{

ContentWatchListId = 4,

ParentWatchList = WatchListsCollection.First(p=>p.WatchListId==1),

ItemItem = ItemsCollection.First(p=>p.ItemId==2)

},

new ContentWatchList()

{

ContentWatchListId = 5,

ParentWatchList = WatchListsCollection.First(p=>p.WatchListId==1),

ItemItem = ItemsCollection.First(p=>p.ItemId==1)

}

};

foreach (var item in ItemsCollection)

{

foreach (var content in ContentWatchListCollection)

{

if (item.ItemId == content.ItemItem.ItemId) item.ContentsWatchLists.Add(content);

}

foreach (var wachlist in WatchListsCollection)

{

foreach (var content in ContentWatchListCollection)

{

if (wachlist.WatchListId == content.ParentWatchList.WatchListId) wachlist.Content.Add(content);

}

There is a view:

<Window x:Class="TelerikHierarchyChildTemplate.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">

<Grid>

<Grid.RowDefinitions>

<RowDefinition Height="*"/>

</Grid.RowDefinitions>

<Grid Grid.Row="0">

<Grid.ColumnDefinitions>

<ColumnDefinition Width="*"/>

</Grid.ColumnDefinitions>

<telerik:RadGridView Grid.Column="0" ItemsSource="{Binding WatchListsCollection}"></telerik:RadGridView>

<telerik:RadGridView Grid.Column="1" ItemsSource="{Binding ContentWatchListCollection}"></telerik:RadGridView>

<telerik:RadGridView Grid.Column="2" ItemsSource="{Binding ItemsCollection}"></telerik:RadGridView>

</Grid>

<Grid Grid.Row="1">

<Grid.ColumnDefinitions>

<ColumnDefinition Width="*"/>

</Grid.ColumnDefinitions>

<telerik:RadGridView ItemsSource="{Binding WatchListsCollection}">

<telerik:RadGridView.ChildTableDefinitions>

<telerik:GridViewTableDefinition>

<telerik:GridViewTableDefinition.Relation>

<telerik:PropertyRelation ParentPropertyName="Content" />

</telerik:GridViewTableDefinition.Relation>

</telerik:GridViewTableDefinition>

</telerik:RadGridView.ChildTableDefinitions>

</telerik:RadGridView>

<telerik:RadGridView Grid.Column="1" ItemsSource="{Binding WatchListsCollection}">

<telerik:RadGridView.ChildTableDefinitions>

<telerik:GridViewTableDefinition/>

</telerik:RadGridView.ChildTableDefinitions>

<telerik:RadGridView.HierarchyChildTemplate>

<DataTemplate>

<telerik:RadGridView x:Name="RadGridView1" GroupRenderMode="Flat"

DataContext="{Binding}"

BorderThickness="0,1,0,1"

GridLinesVisibility="None"

CanUserFreezeColumns="False"

AutoGenerateColumns="False"

ItemsSource="{Binding ContentWatchListCollection}"

ShowGroupPanel="False"

IsReadOnly="True">

<telerik:RadGridView.Columns>

<telerik:GridViewDataColumn DataMemberBinding="{Binding ItemItem.Moniker}"

Header="Moniker" />

<telerik:GridViewDataColumn DataMemberBinding="{Binding ItemItem.Note}"

Header="Note" />

</telerik:RadGridView.Columns>

</telerik:RadGridView>

</DataTemplate>

</telerik:RadGridView.HierarchyChildTemplate>

</telerik:RadGridView>

</Grid>

</Window>

Results of work on the attached image.

A hierarchical structure is displayed when using GridViewTableDefinition.Relation, and when using HierarchyChildTemplate, there is no.

I ask you to inform me that it is necessary to correct that the nested data began to be displayed at usage HierarchyChildTemplate

GridView

answered on 21 Aug 2017

2 answers

383 views

RadDocking not visible on both design and runtime

I have created a simple project to test RadDocking. My Xaml is pretty basic(exactly what's given in the examplehttp://docs.telerik.com/devtools/wpf/controls/raddocking/features/panes/docked-floating-panes). But I cannot see the controls in the designer and also when I execute the code nothing appears on the window.

<Window x:Class="DockTest.MainWindow"xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"xmlns:d="http://schemas.microsoft.com/expression/blend/2008"xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"xmlns:local="clr-namespace:DockTest"xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"mc:Ignorable="d"Title="MainWindow" Height="350" Width="525"><Grid><telerik:RadDocking x:Name="radDocking"><telerik:RadSplitContainer x:Name="radSplitContainer" InitialPosition="DockedRight"><telerik:RadPaneGroup x:Name="radPaneGroup"><telerik:RadPane x:Name="radPane" Header="Docked Pane"><TextBlock Text="Docked Pane."></TextBlock></telerik:RadPane></telerik:RadPaneGroup></telerik:RadSplitContainer></telerik:RadDocking></Grid>

I have included all the required dlls:
Telerik.Windows.Controls
Telerik.Windows.Controls.Navigation
Telerik.Windows.Controls.Docking
Telerik.Windows.Data
I get no error on design or runtime. The version of my Dlls is "2016.1.216.45". My project is running with .Net Framework 4.6.

Docking

answered on 18 Aug 2017

3 answers

549 views

Highlighting doesn't work while searching/filtering

Hello,

I'm working on a custom template of the RadGridView and I styled the SearchPanel to be only a text box part of a user control. The instant search/filtering works correctly, however, it seems that the highlighting doesn't.

While going through the source code, I saw that each column keeps a reference to the SearchPanel, in my case, it seems that this reference is null so the highlighting is not processed.

I simply declare the search panel in my user control and declare the user control as part of my template for RadGridView

<grid:GridViewSearchPanel Grid.Column="1" Style="{StaticResource GridViewSearchPanelStyle}"/>

With a style:

<Style x:Key="GridViewSearchPanelStyle" TargetType="grid:GridViewSearchPanel">

<Setter Property="Margin" Value="5 0 0 1"/>

<Setter Property="MaxHeight" Value="28"/>

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

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

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

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

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

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

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

<Setter Property="Template">

<Setter.Value>

<ControlTemplate x:Name="CustomSearch" TargetType="telerik:GridViewSearchPanel">

<Grid UseLayoutRounding="True">

<TextBox x:Name="PART_SearchAsYouTypeTextBox"

Text="{Binding SearchText, Mode=TwoWay, Delay=100, UpdateSourceTrigger=PropertyChanged}" MinWidth="160"

MaxWidth="200"

MaxHeight="25"

Margin="0 0 0 1"

VerticalContentAlignment="Center"

telerik:TextBoxBehavior.UpdateTextOnEnter="True">

<TextBox.IsTabStop>

<Binding RelativeSource="{RelativeSource TemplatedParent}" Path="IsTabStop"/>

</TextBox.IsTabStop>

</TextBox>

<telerik:RadButton x:Name="ClearButton"

IsTabStop="False"

Style="{StaticResource ClearSearchValueButtonStyle}"

Command="searchPanel:GridViewSearchPanelCommands.ClearSearchValue"/>

</Grid>

</ControlTemplate>

</Setter.Value>

</Setter>

</Style>

So nothing fancy and for the most part this code is from Telerik's xaml files.

Am I missing something? Do I need to bind something somewhere in order for the highlighting feature to work?

Thank you in advance,

Bastian

GridView

answered on 18 Aug 2017

1 answer

139 views

How to change the Milestone background color

I can change the GanttTask item's background color by set its background property. but when I set the task to milestone. it didn't work. it shows original theming color.

How to change the Milestone background color?

Thanks,

-Jacky

GanttView

answered on 18 Aug 2017

1 answer

82 views

Getting Hardcoded Description from a DB value

Hello everyone.

Currently I'm developing an application for my parents busines and I came to a problem which I can not solve.I am trying to show in the RadCombobox a description (External, Internal) depending on the value I get from SQL (1 or 2). I've try different solutions but I don't know if I am doing something wrong because I am not able to show it.

ComboBox

answered on 18 Aug 2017

6 answers

226 views

Edit node name after adding new node

I have a RadTreeView with an underlying Collection. When I add a new item to that collection I want to set that node into edit mode so the user can immediately enter a name for that node.

After modifying the collection and calling Refresh() on it I call BeginEdit() on the newly created RadTreeViewItem. The item is not set into edit mode though. When I call BeginEdit() on another node, that node is set into edit mode. It seems to be only the newly created item which does not enter the desired state.

TreeView

answered on 18 Aug 2017