Questions on UI for WinUI Forum

1 answer

120 views

TreeView Control

When can we expect a TreeView control? The TV is great for things such as Help systems with nested levels.

General Discussions

answered on 29 Nov 2022

0 answers

996 views

How to know if the user closed Print dialog?

Hi All,

Currently we use Telerik WinUI reportviewer and programmatically we need to print a report. We call PrintReport() method of the reportviewer control for that purpose. But, we should somehow know if the user clicked on "Cancel" button or "Print" button on the print dialog. How to subscribe to print/cancel events? or how to know if the user closed print dialog?

Any custom solution would be helpful.

Thanks,

General Discussions

asked on 05 Oct 2022

1 answer

160 views

How to modify SelectedItems in the DataGrid in the ViewModel

The SelectedItems in the Documentation is an ObservableCollection but it only has a getter and no setter.

I am able to get SelectedItems like this using interactivity behavior by passing SelectedItems as a command parameter to the ViewModel

But I would like also be able to modify SelectedItems in the ViewModel as well

<telerikGrid:RadDataGrid x:Name="UserGrid"
                                     ItemsSource="{x:Bind ViewModel.Source}"
                                     AutoGenerateColumns="False"
                                     RowHeight="25"
                                     SelectionMode="Multiple"
                                     SelectionUnit="Row"
                                     UserGroupMode="Disabled">
                <i:Interaction.Behaviors>
                    <ic:EventTriggerBehavior EventName="SelectionChanged">
                        <ic:InvokeCommandAction
                            Command="{x:Bind ViewModel.SelectedUsersCommand}"
                            CommandParameter="{x:Bind UserGrid.SelectedItems,Mode=OneWay}"/>
                    </ic:EventTriggerBehavior>
                </i:Interaction.Behaviors>
                <telerikGrid:RadDataGrid.Columns>
                    <telerikGrid:DataGridTemplateColumn SizeMode="Fixed" Width="10">
                        <telerikGrid:DataGridTemplateColumn.CellContentTemplate>
                            <DataTemplate>
                                <StackPanel VerticalAlignment="Center" Margin="5 0 0 0">
                                    <CheckBox/>
                                </StackPanel>
                            </DataTemplate>
                        </telerikGrid:DataGridTemplateColumn.CellContentTemplate>
                    </telerikGrid:DataGridTemplateColumn>
                    <telerikGrid:DataGridTextColumn x:Uid="NameColumn" SizeMode="Auto"  PropertyName="UserName"/>
                    <telerikGrid:DataGridTextColumn x:Uid="EmailColumn" SizeMode="Auto"  PropertyName="UserEmail"/>
                    <telerikGrid:DataGridTextColumn x:Uid="DepartmentColumn" SizeMode="Auto"  PropertyName="DepartmentName"/>
                    <telerikGrid:DataGridBooleanColumn x:Uid="UserStatusColumn" SizeMode="Auto" PropertyName="UserActiveIndicator"/>
                    <telerikGrid:DataGridDateColumn x:Uid="DateCreatedColumn" SizeMode="Auto" PropertyName="RecordCreated" CellContentFormat="{}{0:d}"/>
                    <telerikGrid:DataGridDateColumn x:Uid="DateModifiedColumn" SizeMode="Auto" PropertyName="RecordModified" CellContentFormat="{}{0:d}"/>
                </telerikGrid:RadDataGrid.Columns>
            </telerikGrid:RadDataGrid>

Buttons

DataGrid

answered on 30 Sep 2022

2 answers

619 views

Grid splitter control should resize data grid height.

In the Grid there are three rows. On the top row is the DataGrid control and on in the middle row there is GridSplitter control then on the bottom is the TabControl.

The requirement is for the GridControl to resize when the GridSplitter resizes the Grid. There should be a MinHeight property set to display a minimum of 6 rows and GridControl should resize.

Current behavior is that GridControl takes all the space and does not resize when the Grid Splitter is moved up or down.

<Page
    x:Class="CSA2.Views.SearchUserPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:CSA2.Views"
    xmlns:vm="using:CSA2.ViewModels"
    xmlns:controls="using:CSA2.Controls"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:i="using:Microsoft.Xaml.Interactivity"
    xmlns:telerik="using:Telerik.UI.Xaml.Controls"
    xmlns:telerikGrid="using:Telerik.UI.Xaml.Controls.Grid"
    xmlns:telerikPrimitives="using:Telerik.UI.Xaml.Controls.Primitives"
    xmlns:gridPrimitives="using:Telerik.UI.Xaml.Controls.Grid.Primitives"
    xmlns:ic="using:Microsoft.Xaml.Interactions.Core"
    mc:Ignorable="d">
    <Page.Resources>
        <ResourceDictionary>
            <DataTemplate x:Key="ColumnHeaderCompleteTemplate">
                <FontIcon
                    Margin="0,3,0,0"
                    FontSize="16"
                    Glyph="&#xE73E;" />
            </DataTemplate>
        </ResourceDictionary>
    </Page.Resources>
    <Grid  x:Name="ContentArea" Margin="{StaticResource SmallTopBottomMargin}">
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="*"/>
        </Grid.RowDefinitions>
        <StackPanel Margin="0 5 0 5">
            <TextBlock x:Uid="SearchUser" Style="{ThemeResource SubtitleTextBlockStyle}"/>
            <Border BorderThickness=".5" BorderBrush="LightGray" CornerRadius="2">
                <Grid Margin="0 5 0 5">
                    <Grid.RowDefinitions>
                        <RowDefinition Height="Auto"/>
                        <RowDefinition Height="*"/>
                        <RowDefinition Height="Auto"/>
                    </Grid.RowDefinitions>
                    <StackPanel>
                        <Grid HorizontalAlignment="Left">
                            <Grid.RowDefinitions>
                                <RowDefinition Height="*"/>
                                <RowDefinition Height="*"/>
                            </Grid.RowDefinitions>
                            <Grid.ColumnDefinitions>
                                <ColumnDefinition Width="*"/>
                                <ColumnDefinition Width="Auto"/>
                                <ColumnDefinition Width="*"/>
                                <ColumnDefinition Width="Auto"/>
                                <ColumnDefinition Width="*"/>
                                <ColumnDefinition Width="Auto"/>
                                <ColumnDefinition Width="*"/>
                                <ColumnDefinition Width="Auto"/>
                                <ColumnDefinition Width="*"/>
                                <ColumnDefinition Width="Auto"/>
                                <ColumnDefinition Width="*"/>
                            </Grid.ColumnDefinitions>
                            <TextBlock x:Uid="UserNameText"
                                       Grid.Row="0"
                                       Grid.Column="0"
                                       VerticalAlignment="Center"
                                       Margin="5 0 5 0"/>
                            <TextBox x:Uid="UserNameNullText"
                                     Grid.Row="0"
                                     Grid.Column="1"
                                     Margin="0 0 5 0"
                                     Width="200"
                                     Text="{x:Bind ViewModel.UserName, Mode=TwoWay}"/>
                            <TextBlock Grid.Row="0" x:Uid="UserEmailText"
                                       Grid.Column="2"
                                       VerticalAlignment="Center"
                                       Margin="0 0 5 0"/>
                            <TextBox x:Uid="UserEmailNullText"
                                     Grid.Row="0"
                                     Grid.Column="3"
                                     Width="200"
                                     Text="{x:Bind ViewModel.UserEmail, Mode= TwoWay}"/>
                            <TextBlock x:Uid="UserRoleText"
                                       Grid.Row="0"
                                       Grid.Column="4"
                                       VerticalAlignment="Center"
                                       Margin="5 0 5 0"/>
                            <Button Grid.Row="0"
                                    Grid.Column="5"
                                    Margin="0 0 0 0" HorizontalAlignment="Stretch">
                                <StackPanel>
                                    <StackPanel Orientation="Horizontal">
                                        <TextBlock Text="Select"
                                                   Margin="0 0 10 0" />
                                        <FontIcon FontFamily="Segoe MDL2 Assets" Glyph="&#xE70D;"/>
                                    </StackPanel>
                                </StackPanel>
                                <Button.Flyout>
                                    <Flyout Placement="Bottom">
                                        <StackPanel Orientation="Vertical">
                                            <ListView x:Name="UserRoles" ItemsSource="{x:Bind ViewModel.UserRoles, Mode=OneWay}"
                                                      SelectionMode="Multiple"
                                                      VerticalContentAlignment="Top"
                                                      ScrollViewer.IsVerticalRailEnabled="True"
                                                      ScrollViewer.VerticalScrollBarVisibility="Visible">
                                                <i:Interaction.Behaviors>
                                                    <ic:EventTriggerBehavior EventName="SelectionChanged">
                                                        <ic:InvokeCommandAction
                                                            Command="{x:Bind ViewModel.SelectedItemsCommand}"
                                                            CommandParameter="{x:Bind UserRoles.SelectedItems,Mode=OneWay}"/>
                                                    </ic:EventTriggerBehavior>
                                                </i:Interaction.Behaviors>
                                            </ListView>
                                        </StackPanel>
                                    </Flyout>
                                </Button.Flyout>
                            </Button>
                            <TextBlock x:Uid="UserDepartmentText"
                                       Grid.Row="0"
                                       Grid.Column="6"
                                       VerticalAlignment="Center"
                                       Margin="5 0 5 0"/>
                            <Button Grid.Row="0"
                                    Grid.Column="7"
                                    Margin="0 0 0 0" HorizontalAlignment="Stretch">
                                <StackPanel>
                                    <StackPanel Orientation="Horizontal">
                                        <TextBlock Text="Select"
                                                   Margin="0 0 10 0" />
                                        <FontIcon FontFamily="Segoe MDL2 Assets" Glyph="&#xE70D;"/>
                                    </StackPanel>
                                </StackPanel>
                                <Button.Flyout>
                                    <Flyout Placement="Bottom">
                                        <StackPanel Orientation="Vertical">
                                            <ListView x:Name="UserDepartments" ItemsSource="{x:Bind ViewModel.UserDepartments, Mode=OneWay}"
                                                      SelectionMode="Multiple"
                                                      VerticalContentAlignment="Top"
                                                      ScrollViewer.IsVerticalRailEnabled="True"
                                                      ScrollViewer.VerticalScrollBarVisibility="Visible">
                                                <i:Interaction.Behaviors>
                                                    <ic:EventTriggerBehavior EventName="SelectionChanged">
                                                        <ic:InvokeCommandAction
                                                            Command="{x:Bind ViewModel.SelectedItemsCommand}"
                                                            CommandParameter="{x:Bind UserDepartments.SelectedItems,Mode=OneWay}"/>
                                                    </ic:EventTriggerBehavior>
                                                </i:Interaction.Behaviors>
                                            </ListView>
                                        </StackPanel>
                                    </Flyout>
                                </Button.Flyout>
                            </Button>
                            <TextBlock x:Uid="UserFunctionsText"
                                       Grid.Row="0"
                                       Grid.Column="8"
                                       VerticalAlignment="Center"
                                       Margin="5 0 5 0"/>
                            <Button Grid.Row="0"
                                    Grid.Column="9"
                                    Margin="0 0 0 0" HorizontalAlignment="Stretch">
                                <StackPanel>
                                    <StackPanel Orientation="Horizontal">
                                        <TextBlock Text="Select"
                                                   Margin="0 0 10 0" />
                                        <FontIcon FontFamily="Segoe MDL2 Assets" Glyph="&#xE70D;"/>
                                    </StackPanel>
                                </StackPanel>
                                <Button.Flyout>
                                    <Flyout Placement="Bottom">
                                        <StackPanel Orientation="Vertical">
                                            <ListView x:Name="UserFunctions" ItemsSource="{x:Bind ViewModel.UserFunctions, Mode=OneWay}"
                                                      SelectionMode="Multiple"
                                                      VerticalContentAlignment="Top"
                                                      ScrollViewer.IsVerticalRailEnabled="True"
                                                      ScrollViewer.VerticalScrollBarVisibility="Visible">
                                                <i:Interaction.Behaviors>
                                                    <ic:EventTriggerBehavior EventName="SelectionChanged">
                                                        <ic:InvokeCommandAction
                                                            Command="{x:Bind ViewModel.SelectedItemsCommand}"
                                                            CommandParameter="{x:Bind UserFunctions.SelectedItems,Mode=OneWay}"/>
                                                    </ic:EventTriggerBehavior>
                                                </i:Interaction.Behaviors>
                                            </ListView>
                                        </StackPanel>
                                    </Flyout>
                                </Button.Flyout>
                            </Button>
                            <Button Grid.Row="0"
                                    Grid.Column="10"
                                    Margin="5 0 0 0"
                                    Command="{x:Bind ViewModel.SearchCommand}">
                                <StackPanel Orientation="Horizontal">
                                    <TextBlock x:Uid="SearchButtonText"
                                               Margin="0 0 10 0" />
                                    <SymbolIcon Symbol="Zoom"/>
                                </StackPanel>
                            </Button>
                            <Button Grid.Row="1"
                                    Grid.Column="9"
                                    Command="{x:Bind ViewModel.AddUserCommand}">
                                <StackPanel Orientation="Horizontal">
                                    <TextBlock x:Uid="CreateNewButtonText" Margin="0 0 20 0"/>
                                    <SymbolIcon Symbol="AddFriend"/>
                                </StackPanel>
                            </Button>
                            <Button Grid.Row="1"
                                    Grid.Column="10"
                                    Margin="5 0 0 0"
                                    Command="{x:Bind ViewModel.ClearCommand}">
                                <StackPanel Orientation="Horizontal">
                                    <TextBlock x:Uid="ClearButtonText" Margin="0 0 20 0"/>
                                    <SymbolIcon Symbol="Refresh"/>
                                </StackPanel>
                            </Button>
                        </Grid>
                    </StackPanel>
                </Grid>
            </Border>
        </StackPanel>
        <Grid Grid.Row="1" Margin="0 5 0 5">
            <Grid.RowDefinitions>
                <RowDefinition Height="*"/>
                <RowDefinition Height="10"/>
                <RowDefinition Height="*"/>
            </Grid.RowDefinitions>
            <telerikGrid:RadDataGrid x:Name="UserGrid"
                                     MinHeight="150"
                                     ItemsSource="{x:Bind ViewModel.Source}"
                                     AutoGenerateColumns="False"
                                     RowHeight="25"
                                     SelectionMode="Multiple"
                                     SelectionUnit="Row"
                                     UserGroupMode="Disabled">
                <i:Interaction.Behaviors>
                    <ic:EventTriggerBehavior EventName="SelectionChanged">
                        <ic:InvokeCommandAction
                            Command="{x:Bind ViewModel.SelectedUsersCommand}"
                            CommandParameter="{x:Bind UserGrid.SelectedItems,Mode=OneWay}"/>
                    </ic:EventTriggerBehavior>
                </i:Interaction.Behaviors>
                <telerikGrid:RadDataGrid.Columns>
                    <telerikGrid:DataGridTemplateColumn SizeMode="Fixed" Width="20">
                        <telerikGrid:DataGridTemplateColumn.CellContentTemplate>
                            <DataTemplate>
                                <StackPanel HorizontalAlignment="Center" VerticalAlignment="Center">
                                    <CheckBox/>
                                </StackPanel>
                            </DataTemplate>
                        </telerikGrid:DataGridTemplateColumn.CellContentTemplate>
                    </telerikGrid:DataGridTemplateColumn>
                    <telerikGrid:DataGridTextColumn SizeMode="Auto"  PropertyName="UserName" Header="Name"/>
                    <telerikGrid:DataGridTextColumn SizeMode="Auto"  PropertyName="UserEmail" Header="Email"/>
                    <telerikGrid:DataGridTextColumn SizeMode="Auto"  PropertyName="DepartmentName" Header="Department"/>
                    <telerikGrid:DataGridBooleanColumn SizeMode="Auto" PropertyName="UserActiveIndicator" Header="User Status" />
                    <telerikGrid:DataGridDateColumn SizeMode="Auto" PropertyName="RecordCreated" Header="Date Created" CellContentFormat="{}{0:d}"/>
                    <telerikGrid:DataGridDateColumn SizeMode="Auto" PropertyName="RecordModified" Header="Date Modified" CellContentFormat="{}{0:d}"/>
                </telerikGrid:RadDataGrid.Columns>
            </telerikGrid:RadDataGrid>
            <telerikPrimitives:RadGridSplitter Grid.Row="1"
                                               ResizeBehavior="BasedOnAlignment"
                                               ResizeDirection="Rows"
                                               HorizontalAlignment="Stretch">
                <telerikPrimitives:RadGridSplitter.Element>
                    <FontIcon FontFamily="{ThemeResource SymbolThemeFontFamily}" Glyph="&#xE76F;" FontSize="10"/>
                </telerikPrimitives:RadGridSplitter.Element>
            </telerikPrimitives:RadGridSplitter>
            <Grid Grid.Row="2" Margin="0 2 0 0">
                <telerik:RadTabControl>
                    <telerik:RadTabControl.Items>
                        <telerik:RadTabItem Header="User Details">
                            <telerik:RadTabItem.Content>
                                <controls:AddEditControl x:Name="AddEditControl" DataContext="{x:Bind ViewModel.UserDetailsViewModel}" />
                            </telerik:RadTabItem.Content>
                        </telerik:RadTabItem>
                        <telerik:RadTabItem Header="Tab 2" Content="The content of tab item 2"/>
                        <telerik:RadTabItem Header="Tab 3" Content="The content of tab item 3"/>
                        <telerik:RadTabItem Header="Tab 4" Content="The content of tab item 4"/>
                    </telerik:RadTabControl.Items>
                </telerik:RadTabControl>
            </Grid>
        </Grid>
    </Grid>
</Page>

DataGrid

GridSplitter

TabControl

answered on 26 Sep 2022

1 answer

521 views

How to print a PDF file in WinUI project?

Hi,

We are using controls from Telerik UI for WinUI in our project. There is sales invoice report and generated PDF file of that report. We would like to show print dialog after processing the sales invoice. For this purpose we are using WinUI PdfViewer (RadPdfViewer control). The RadPdfViewer control shows content of PDF file, we are not able to print.

RadPdfViewer has Print() method. When we set DocumentSource as PDF file and call Print() method, should it show print dialog? See attached sample project, run and click "Print report" button. Nothing happen, but my expectation is showing print dialog. Any idea/solution to print pdf file?

General Discussions

PdfViewer

answered on 23 Sep 2022

1 answer

91 views

Clicking Button inside the DataGrid does nothing

When clicking button inside the DataGrid row the command doesn't get executed in the ViewModel.

Both Page and ViewModel are created by the DI container so I need to be able to pass the POCO object of the row where the button is clicked to the ViewModel.

 <telerikGrid:RadDataGrid DataContext="{x:Bind ViewModel}" ItemsSource="{x:Bind ViewModel.Source}" AutoGenerateColumns="False">
                            <telerikGrid:RadDataGrid.Columns>
                                <telerikGrid:DataGridTextColumn PropertyName="UserName" Header="User Name"/>
                                <telerikGrid:DataGridTextColumn PropertyName="UserEmail" Header="User Email"/>
                                <telerikGrid:DataGridBooleanColumn PropertyName="UserActiveIndicator" Header="User Status" />
                                <telerikGrid:DataGridDateColumn PropertyName="RecordCreated" Header="Date Created"/>
                                <telerikGrid:DataGridDateColumn PropertyName="RecordModified" Header="Date Modified"/>
                                <telerikGrid:DataGridTemplateColumn Header="Edit" Width="81">
                                    <telerikGrid:DataGridTemplateColumn.CellContentTemplate>
                                        <DataTemplate x:DataType="vm:SearchUserViewModel">
                                            <Button x:Name="editButton" Command="{x:Bind  EditUserCommand}" CommandParameter="{Binding }">
                                                <SymbolIcon Symbol="Edit"/>
                                            </Button>
                                        </DataTemplate>
                                    </telerikGrid:DataGridTemplateColumn.CellContentTemplate>
                                </telerikGrid:DataGridTemplateColumn>
                            </telerikGrid:RadDataGrid.Columns>
                        </telerikGrid:RadDataGrid>

Buttons

DataGrid

answered on 19 Sep 2022

0 answers

111 views

Datagrid serverside filtering

Hi

I am using the Datagrid with Data Virtualization and I need to implement server side filtering.

So I added the "FilterRequested" command to get the information on how the user wants to filter. I then persist the filters in my viewmodel, clear all data in the datagrids itemsource, send a request to the server and refill the itemsource with the first <batchsize> of the filtered rows. All following requests to the server (e.g.. throug scolling) will use the persisted filter values (and I do the same for sorting). This kind of works so far.

My Problem: I have a column that represents a state in form of an enum. Out of the box I can only filter for distinct states that are in the grid right now, but there are potentially more states in rows that have not been loaded yet. Is there a way to override the distinct filter options with static ones (in my case all enum values)? Even if there is an override, it is probably not possible to figure out which values were selected, because the DistinctValuesFilterDescriptor that is delivered via the FilterRequestContext of the command just gives me all elements that would be left after the filter, not the values selected.

kind regards
Dominik

DataGrid

asked on 29 Jul 2022

1 answer

132 views

[DataGrid] UI/UX Differences with UWP

Hi,

On the video, you see the WinUI and UWP versions of the same implementation. I use expando to set the ItemsSource.

Differences:
1- Header has a mouse over state on WinUI. What is the trick to not have this?

2- In my DescriptionControl.xaml, the control has an hard coded value of Height=192. WinUI grid ignores this value. However, setting the RowHeight in the RadDataGrid does the job. Is it a bug/regression/new expectation?

3- For each timestamp (TimestampColumn), the SizeMode is Auto. In WinUI, my columns are much larger than UWP version.

4- Surely super easy, how to change the foreground and background color of the header column? Background and Foreground don't exist on DataGridTypedColumn. The default output of UWP is nicer.

Thank you!

DataGrid

answered on 15 Jul 2022

1 answer

142 views

Telerik WinUI 2.X -- VS Extensions for 2022

I was noticing that there is not a VS Extensions for 2022 for the product set WinUI 2.X in my Progress folders. And I'm not sure what this means.

As you can see I have the templates for WinUI. What am I missing?

Sincerely,
Keith Nicholson

General Discussions

answered on 13 Jul 2022

1 answer

168 views

[RadDataGrid] Crash at startup with or without ItemsSource

Hi,

Load the sample app, it generates: Error HRESULT E_FAIL has been returned from a call to a COM component.

I have the same in a UWP app and it works perfectly.

<grid:RadDataGrid
x:Name="DataGrid"
Grid.Row="1"
AutoGenerateColumns="True"
Background="#f0f0f0"
BorderThickness="0"
FrozenColumnCount="4"
GridLinesThickness="1"
GridLinesVisibility="Horizontal"
Margin="0,16,0,0"
SelectionMode="None"
UserColumnReorderMode="None"
UserFilterMode="Disabled"
UserGroupMode="Disabled">
<grid:RadDataGrid.Commands>
<powerNumbers:PowerNumbersAutoGenerateCommand />
</grid:RadDataGrid.Commands>
</grid:RadDataGrid>

DataGrid