Questions on UI for WPF Forum

1 answer

169 views

Suppress message from RadSpreadsheet control

We use RadSpreadsheet control to display spreadsheet. We use protection mode and do not allow user to change the content.

If user tries to change content, the control displays error message: "The cell you are trying to change is on protected sheet. To make change, unprotect the sheet."

We will like to suppress this message as the style is not one used by our application. Also application does not allow user to modify worksheet.

How can we suppress message? Thanks.

Spreadsheet

answered on 11 Oct 2018

5 answers

242 views

Scrolling in the dropdown with a grouped source.

I have a RadComboBox with a ListCollectionView with grouping.
My problem is that the scrollviewer scrolls between the groups, not the items...
Pressing the down/up keys correctly moves thru the items, but scrolling (either clicking or with wheel) moves thru the groups.
Some groups may have more items than will fit in the dropdown and it's very hard to see and select them.

I need to change this. How?

Jurgen

ComboBox

answered on 11 Oct 2018

5 answers

138 views

Different colors for different points in areaseries

I have a chart with an AreaSeries and a DateTime horizontal axis. I want to set a different color on certain points in the series, so that it looks for example like this: https://i.imgur.com/yycLv4v.png

How can I achieve this?

ChartView

answered on 11 Oct 2018

3 answers

141 views

Schedule View Group Width

Hi,

I followed the "GroupHeader template" example in the wpf demo. I would like to edit the categories default width. For exemple, with 3 categories, I would like the first two categories to take 50% of the space, and the last one the 50% remaining, instead of having 33% for each. I tried editing my template used for "GroupHeaderContentTemplateSelector" but it only changes the header width, not all the column width. Thank you in advance.

Marc

ScheduleView

answered on 11 Oct 2018

2 answers

191 views

Telerik Error in XAML Designer

Attached image shows the error displayed in the XAML designer for each and every Telerik control in the entire solution. The error occurred after I added a new WPF Custom Control Library to the solution which I have since removed. How do I resolve this?

General Discussions

answered on 09 Oct 2018

2 answers

141 views

How to Find cell number when user is moving mouse on spreadsheet.

I use RadSpreadsheet control to display spreadsheet. I will like to find out cell number - row and column - where the user is pointing his mouse to. I will like to drag a string and drop it at this location.

Spreadsheet

answered on 05 Oct 2018

2 answers

185 views

What assembly/namespace do I need to use this?

I am using the very latest UI for WPF release (R3 for 2018). The release notes said that RadMultiColumnComboBox was available for use, albeit in beta. I wanted to try it but I cannot figure out where it is.

I tried replacing my XAML "<telerik:RadComboBox> tag with "<telerik:RadMultiColumnComboBox>" but Intellisense didn't know about it.

My current assembly references the following:

Telerik.Windows.Controls

Telerik.Windows.Controls.FileDialogs

Telerik.Windows.Controls.Input

Telerik.Windows.Controls.Navigation

What assembly am I missing? I've tried searching the docs but I can't see anywhere they're telling me what assembly to reference

MultiColumnComboBox

answered on 05 Oct 2018

2 answers

185 views

Inconsistent radpane flyout and focus behaviour

Hello,

I have put together a small sample application which is a cut down version of my main application, both the sample application and main app are suffering from similar inconsistent flyout pane behaviour.

If I click on the collapsed "Search" pane and then one of the grid's hyperlinks. It collapses immediately - this is a show stopper in my main application for when the search pane is collapsed.

If I mouse hover on the search and don't click - I can click then click on the grid hyperlinks correctly - this is the same behaviour I want when the user clicks the search button.

These are the main issues I'm facing - I can live with the behaviour presented by the toolbar and the datagrid context menu but ideally I want the pane to stay expanded while I interact with the context menu's

Any advice would be appreciated.

MainWindow.xaml:

<Window x:Class="DockHidingIssue.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:telerik="http://schemas.telerik.com/2008/xaml/presentation"

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

        xmlns:dockHidingIssue="clr-namespace:DockHidingIssue"

        WindowStartupLocation="CenterScreen"

        mc:Ignorable="d"

        Title="MainWindow" Height="768" Width="1024" d:DataContext="{d:DesignInstance dockHidingIssue:MainWindow}">

    <Window.Resources>



        <MenuItem x:Key="one" Header="First" Click="One_OnClick" />

        <MenuItem x:Key="two" Header="Second" Click="Two_OnClick" />

        <MenuItem x:Key="three" Header="Third" Click="Three_OnClick" />



        <ContextMenu x:Key="GridContextMenu">

            <MenuItem>Click me</MenuItem>

        </ContextMenu>

    </Window.Resources>

    <Grid>

        <telerik:RadDocking Background="White" x:Name="MainDock"

                            telerik:RadDocking.SerializationTag="ParentDockContainer">

            <telerik:RadDocking.DocumentHost>



                <telerik:RadSplitContainer telerik:RadDocking.SerializationTag="HomePageContainer">

                    <telerik:RadPaneGroup BorderBrush="{x:Null}" BorderThickness="0"

                                          telerik:RadDocking.SerializationTag="HomePageGroup">

                        <telerik:RadDocumentPane CanFloat="False" Visibility="Collapsed" CanUserClose="False"

                                                 telerik:RadDocking.SerializationTag="MainPane">

                            <WebBrowser x:Name="Browser" />

                        </telerik:RadDocumentPane>

                    </telerik:RadPaneGroup>

                </telerik:RadSplitContainer>

            </telerik:RadDocking.DocumentHost>



            <telerik:RadSplitContainer InitialPosition="DockedBottom"

                                       telerik:RadDocking.SerializationTag="SearchContainer">

                <telerik:RadPaneGroup telerik:RadDocking.SerializationTag="SearchGroup">

                    <telerik:RadPane Header="Search" x:Name="SearchRadPane"

                                     telerik:RadDocking.SerializationTag="SearchPane"

                                     CanUserPin="True" IsPinned="False" MouseEnter="SearchRadPane_OnMouseEnter">





                        <TabControl TabStripPlacement="Bottom">

                            <TabItem Header="Search">

                                <StackPanel>

                                    <ToolBar x:Name="tbSelectorControl" ToolBarTray.IsLocked="True"

                                             KeyboardNavigation.TabNavigation="Continue"

                                             VerticalAlignment="Center" VerticalContentAlignment="Center">

                                        <Menu TabIndex="0" SnapsToDevicePixels="True" Background="Transparent">

                                            <Menu.Resources>

                                                <Style TargetType="MenuItem"

                                                       BasedOn="{StaticResource {x:Type MenuItem}}">

                                                    <Setter Property="Command"

                                                            Value="{Binding Path=Command, FallbackValue={x:Null}}" />

                                                </Style>

                                            </Menu.Resources>

                                            <MenuItem x:Name="mnuSelected" SubmenuOpened="MnuSelected_OnSubmenuOpened">

                                                <MenuItem.Header>

                                                    <StackPanel Orientation="Horizontal" Height="30">

                                                        <Label x:Name="txtSelectedFinder" Content="Selected Finder"

                                                               Height="30" />

                                                        <Image Height="8" Width="8"

                                                               Margin="8,0,0,0" />

                                                    </StackPanel>

                                                </MenuItem.Header>



                                                <MenuItem Header="Test" />

                                            </MenuItem>

                                        </Menu>

                                        <Separator />

                                    </ToolBar>

                                    <DataGrid ItemsSource="{Binding Data}" AutoGenerateColumns="False"

                                              ContextMenu="{StaticResource GridContextMenu}"

                                              ContextMenuOpening="FrameworkElement_OnContextMenuOpening">

                                        <DataGrid.Columns>

                                            <DataGridTextColumn Header="Name" />



                                            <DataGridHyperlinkColumn Header="Link" Binding="{Binding}" >



                                                <DataGridHyperlinkColumn.ElementStyle>

                                                    <Style>

                                                        <EventSetter Event="Hyperlink.Click" Handler="Hyperlink_Click" />

                                                    </Style>

                                                </DataGridHyperlinkColumn.ElementStyle>

                                            </DataGridHyperlinkColumn>

                                        </DataGrid.Columns>



                                    </DataGrid>

                                </StackPanel>

                            </TabItem>

                            <TabItem Header="Tasks">

                                <Grid x:Name="MyTasks" />

                            </TabItem>

                        </TabControl>

                    </telerik:RadPane>

                </telerik:RadPaneGroup>

            </telerik:RadSplitContainer>

        </telerik:RadDocking>

    </Grid>

</Window>

Code behind:

using System.Collections.Generic;

using System.ComponentModel;

using System.Runtime.CompilerServices;

using System.Windows;

using System.Windows.Controls;

using System.Windows.Documents;

using System.Windows.Input;

namespace DockHidingIssue

{

/// <summary>

/// Interaction logic for MainWindow.xaml

/// </summary>

public partial class MainWindow : Window, INotifyPropertyChanged

{

private IEnumerable<string> _data;

public MainWindow()

{

InitializeComponent();

DataContext = this;

Data = new List<string>

{

@"http://www.google.com",

@"http://www.telerik.com"

};

}

public IEnumerable<string> Data

{

get { return _data; }

set

{

_data = value;

OnPropertyChanged();

}

public event PropertyChangedEventHandler PropertyChanged;

private void FrameworkElement_OnContextMenuOpening(object sender, ContextMenuEventArgs e)

{

(sender as FrameworkElement).Focus();

}

private void One_OnClick(object sender, RoutedEventArgs e)

{

Data = new List<string>

{

@"http://www.reddit.com",

@"http://www.yahoo.com"

};

}

private void Two_OnClick(object sender, RoutedEventArgs e)

{

Data = new List<string>

{

@"http://www.cnn.com",

@"http://www.facebook.com"

};

}

private void Three_OnClick(object sender, RoutedEventArgs e)

{

Data = new List<string>

{

@"http://www.rt.com",

@"http://www.bbc.com"

};

}

protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null)

{

PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));

}

private void MnuSelected_OnSubmenuOpened(object sender, RoutedEventArgs e)

{

mnuSelected.Items.Clear();

mnuSelected.Items.Add(Resources["one"] as MenuItem);

mnuSelected.Items.Add(Resources["two"] as MenuItem);

mnuSelected.Items.Add(Resources["three"] as MenuItem);

}

private void SearchRadPane_OnMouseEnter(object sender, MouseEventArgs e)

{

SearchRadPane.Focus();

}

private void Hyperlink_Click(object sender, RoutedEventArgs e)

{

var link = e.OriginalSource as Hyperlink;

if (link != null)

Browser.Navigate(link.NavigateUri.OriginalString);

}

Thanks,

Alex

Docking

answered on 05 Oct 2018

0 answers

231 views

RadGridView - Column DataTrigger change the Content Size - Why?

<telerik:RadGridView    Grid.Row="1"
                                        AutoGenerateColumns="False"
                                            IsFilteringAllowed="False" CanUserResizeColumns="False" ShowGroupPanel="False"
                                                RowIndicatorVisibility="Collapsed"
                                                    SelectionMode="Single" SelectionUnit="FullRow"
                                                        telerik:StyleManager.Theme="Windows8Touch"
                                                            ItemsSource="{Binding Rückstellproben_RadGridView}"
                                                                SelectedItem="{Binding Rückstellproben_RadGridView_SelectedItem, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}">

    <telerik:GridViewDataColumn
                                                    Header="Freigabe"
                                                        HeaderTextAlignment="Center"
                                                            MinWidth="120">

                        <telerik:GridViewDataColumn.CellTemplate>

                            <DataTemplate>

                                <telerik:RadButton  Content="Bestätigen"
                                                        IsEnabled="False"
                                                            Margin="3, 0, 3, 0"/>

                            </DataTemplate>

                        </telerik:GridViewDataColumn.CellTemplate>

                        <telerik:GridViewDataColumn.CellEditTemplate>

                                <telerik:RadButton  Content="Bestätigen"
                                                        x:Name="rb_Stellplatzfreigabe_der_dritten_Rückstellprobe"
                                                            Margin="3, 0, 3, 0">

                                    <telerik:RadButton.Style>

                                        <Style TargetType="telerik:RadButton">

                                        <Style.Triggers>

                                            <DataTrigger Binding="{Binding Rückstellproben_RadGridView_Kryobox_Position_dritte_Probe_ID}" Value="{x:Null}">

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

                                            </DataTrigger>

                                        </Style.Triggers>

</Style>

</telerik:RadButton.Style/>

</telerik:RadButton>

</DataTemplate>

</telerik:GridViewDataColumn.CellEditTemplate>

</telerik:GridViewDataColumn/>

</telerik:RadGridView>

(Left Picture - CellTemplate / Right Picture - CellEditTemplate with DataTrigger / Bottom - if i try to change the Height)

Greets

GridView

asked on 05 Oct 2018

2 answers

359 views

RadMenuItem IsEnabled not refreshing consistently

My undo menu item is defined like this:

<telerik:RadMenuItem

Header="Undo"

InputGestureText="Ctrl-Z"

Command="{Binding UndoCommand}"

IsEnabled="{Binding SelectedProjectCanUndo}"/>

SelectedProjectCanUndo is a bool property on the DataContext for the main window containing the menu. I call PropertyChanged on the correct property name, and I can see that SelectedProjectCanUndo is called immediately after, on behalf of the binding. And yet the menu item does not refresh consistently. Sometimes it does, and sometimes it doesn't. I created a small similar "sandbox" application, but everything works fine there. Any ideas?

Menu

answered on 04 Oct 2018