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Hi,

I have tried sub-classing a RadSplitButton. But no functionalities is being inherited from the original button. So, there is no dropdown content showing (popup) when clicking on the dropdown button, Command gets not executed and so on.

Any suggestion on how to properly base a custom control on this Split button, please?

Avrohom
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Iron
 updated question on 03 Jan 2022
1 answer
252 views

Hi

I created a main window with RadDocking with DocumentHost and some RadSplitContainer.
Now with a user interaction I show a modeless window: I'd like to give the user the ability to dock this window in main window as docking part.
In the first look example of RadDocking there is a initial floating RadSplitContainer, but I would that my floating part only show after the user click a button and it was initially hidden.

Also, if I close the initially visible flaoting part, then I can't reopen it.

This is the flow of visibility:
1) Launch the application: floating window is not visible
2) Click on some button: floating window is now visible
3) User can dock the floating window on mainwindow docking

This is the RadDocking piece of xaml:

<t:RadDocking x:Name="radDocking1"
                            RetainPaneSizeMode="DockingAndFloating"
                            CanAutoHideAreaExceedScreen="True"
                            Grid.Row="1" Margin="0 0 0 10"                            
                            BorderThickness="0"
							CloseButtonPosition="InPane"
                            Padding="0"
						  PaneStateChange="radDocking1_PaneStateChange">
<t:RadDocking.DocumentHost>
<some code>
</t:RadDocking.DocumentHost>
<t:RadSplitContainer>
<some code>
</t:RadSplitContainer>
<t:RadSplitContainer>
<some code>
</t:RadSplitContainer>
<some code>
<t:RadSplitContainer>
</t:RadSplitContainer>
<t:RadSplitContainer Name="ImpulsiFloatContainer" 
						InitialPosition="FloatingDockable"
						 t:DockingPanel.InitialSize="900,1340"									 
						 Visibility="{Binding ImpulsiViewVisible, Converter={StaticResource BoolToVis}}">
					<t:RadPaneGroup >
						<t:RadPane  Header="{DynamicResource ResourceKey={x:Static r:ResourcesKeys.ImpulsiViewHeader}}">
							<local:ImpulsiViewControl />
						</t:RadPane>
					</t:RadPaneGroup>
				</t:RadSplitContainer>
			</t:RadDocking>

Thank you

Luigi

 

Stenly
Telerik team
 answered on 03 Jan 2022
2 answers
323 views

I'm using a ChartSeriesProvider to display multiple LineSeries charts. Everything is working well except the legend items. I would like the Title property to display each series name, but instead I'm getting the same series name (the first one) for all of the legend titles.

If I do it via XAML it works, as shown in your example:

<Setter Property="LegendSettings">
  <Setter.Value>
    <telerik:SeriesLegendSettings x:Name="jobsLegendSettings" Title="{Binding SeriesName}" />
  </Setter.Value>
 </Setter>

However, I must do it via code behind. Here is my current code which doesn't work (I only pasted the relevant code, I hope it's enough):

Style style = new Style();
descriptor.Style = style;
jobsSeriesProvider.SeriesDescriptors.Add(descriptor);
style.TargetType = typeof(Telerik.Windows.Controls.ChartView.LineSeries);
Binding binding = new Binding();
binding.Path = new PropertyPath("SeriesName");
binding.Source = JobsData;
SeriesLegendSettings legendSettings = new SeriesLegendSettings();
BindingOperations.SetBinding(legendSettings, SeriesLegendSettings.TitleProperty, binding);

var legendSetter = new Setter
{
	Property = Telerik.Windows.Controls.ChartView.LineSeries.LegendSettingsProperty,
	Value = legendSettings,
};
style.Setters.Add(legendSetter);  
BTW JobsData is the ObservableCollection which contains all of the different series view models, which have a property called SeriesName.

 

Stenly
Telerik team
 answered on 31 Dec 2021
1 answer
147 views

Hi,

I want to change the color of the hours,

I tried to change the Foreground in TimeRulerItem but it does not change my color.

I would love to help,

Thanks.

 

 

 

   <Style TargetType="telerik:TimeRulerItem">
        <Setter Property="Foreground" Value="White"/>
        <Setter Property="BorderBrush" Value="White"/>
        <Setter Property="BorderThickness" Value="0 1 0 0"/>
        <Setter Property="VerticalContentAlignment" Value="Top"/>
        <Setter Property="HorizontalContentAlignment" Value="Stretch"/>
        <Setter Property="Panel.ZIndex" Value="50"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="telerik:TimeRulerItem">
                    <Border BorderThickness="{TemplateBinding BorderThickness}" BorderBrush="{TemplateBinding BorderBrush}" Background="{TemplateBinding Background}">
                        <ContentPresenter Margin="{TemplateBinding Padding}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
                    </Border>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
Stenly
Telerik team
 answered on 27 Dec 2021
4 answers
512 views

Dear Team,

Im kinda new in WPF, i switched from winform ~a year ago. I have to move one of my old projects from winform to WPF (VB.NET), and as i see the basic gridview is not too good, so im about to buy the radgridview from Telerik.

Im trying, and i cant solve one thing:

I have a 'datatable', which is passed to the radgridview as itemsource. The columns are partnumbers the rows are dates, and both are dynamic - i mean the number of both them are dynamic - so i cannot pre-define them, in the xaml, but i need to change the backgorund color for some cell, and the triggers can be several kind:

 - If cell was edited

 - If cell value < 0  

 - triggers which doenst depend on the data in the grid, comes from other datadatable, but i know which column and row has to be changed.  

 

Since virtualization is ON for rows and columns as well, if i just set the background color of the cell, and scroll away, the color disappears.

My approach (probably wrong):

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

      Dim myDataGridRow As Telerik.Windows.Controls.GridView.GridViewRow = CType(dgw_FG.ItemContainerGenerator.ContainerFromItem(dgw_FG.Items(1)), Telerik.Windows.Controls.GridView.GridViewRow)
         Dim G As Telerik.Windows.Controls.GridView.GridViewCell = myDataGridRow.Cells(4)
        G.Background = New SolidColorBrush(Colors.Blue)

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

Is there a way to recolor a cell background/foreground knowing only the X/Y coordinate of the filed on vb-code-side?

I suffered 3 days with this question, reading a lot of threads here... but i stuck. An example code would make me happy ;)

Thank you for your answer !!!

 

Peter B (Hungary)

 

Peter
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Iron
 updated answer on 27 Dec 2021
1 answer
315 views

How can I use different colors for positive and negative values?

This is my XAML Code:

                    <telerik:RadCartesianChart x:Name="DashboardChart" FontSize="{telerik:FluentResource ResourceKey=FontSizeS}">
                        <telerik:RadCartesianChart.HorizontalAxis>
                            <telerik:CategoricalAxis />
                        </telerik:RadCartesianChart.HorizontalAxis>
                        <telerik:RadCartesianChart.VerticalAxis>
                            <telerik:LinearAxis LabelInterval="5"/>
                        </telerik:RadCartesianChart.VerticalAxis>
                        <telerik:RadCartesianChart.Series>
                            <telerik:BarSeries x:Name="DashboardChartBarSeries" ValueBinding="Difference" >
                            </telerik:BarSeries>
                        </telerik:RadCartesianChart.Series>
                    </telerik:RadCartesianChart>

The data binding is done in the C# code:

this.DashboardChartBarSeries.DataContext = _localViewModel.Document;
 The values are displayed correctly. I would like to display negative values in red and positive values in green. How can I implement this?
Stenly
Telerik team
 answered on 27 Dec 2021
1 answer
323 views

Hello!

I'm working with the RadMaskedNumericInput for the first time (first time using masked inputs at all) and am in need of advice. I want to have the control's value be set to a default value if the user were to clear the control's input, then remove the focus.

I have the control set up like so:

<telerik:RadMaskedNumericInput x:Name="txtDaysValid" Width="30" Value="30"
                               Mask="d2" TextMode="PlainText" InputBehavior="Insert"
                               maskedInput:MaskedInputExtensions.Minimum="1"
                               UpdateValueEvent="LostFocus"
                               LostFocus="txtDaysValid_LostFocus"/>

And the event handler is:

var numericInput = sender as RadMaskedNumericInput;

if (string.IsNullOrWhiteSpace(numericInput.Text))
{
    numericInput.Value = 30;
    numericInput.Text = numericInput.Value.ToString();
}

This is the behaviour I'm currently experiencing:

  • Control Reads 30 -> User sets blank -> Control Reads blank (incorrect)
  • Control Reads 30 -> User sets to 12 -> Control Reads 12 -> User sets blank -> Control reads 30 (correct)
  • Control Reads 30 -> User sets to 12 -> Control Reads 12 -> User sets blank -> Control reads 30 -> User sets blank -> Control reads blank (incorrect)
  • Control Reads Blank -> User sets to 1 -> Control Reads 1 -> User sets blank -> Control Reads blank (incorrect)
  • Control Reads Blank -> User sets to 21 -> Control Reads 21 -> User sets blank -> Control Reads 30 (correct)

What am I missing here? It appears that updating the value and text directly only works in some cases. Is there a better approach to ensuring that when the user clears the input's field, that it defaults to a specific value upon losing focus?

Thanks!

Stenly
Telerik team
 answered on 27 Dec 2021
0 answers
119 views

Dear Support,

I noticed one strange thing with radgridview, under WPF (see the screenshot below)

This is a complex production planner screen, and as far as i just click the cells with mouse it works perfectly. But when i use the arrow keys to navigate between cells two thing can happen:

1. If i push less frequently the actual cell switches without problem.

2. If i push quicker, or if i hold the button the grid leaves random selected cells behind.

There are a few things in the SelectedCellsChanged event, which runs in ~200ms. This 200ms is mostly an SQL query, i run it each time to fill some other fields based on the selected cell. As i guess: if i switch faster than this, the bug appears, if i select slower than this, then it switches the cell without any problem. 

Do you have any advice how can i solve this? I tried to put .unselectall after each, but it just made it worse.

Thanks

Peter

 

 

Peter
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Iron
 asked on 25 Dec 2021
1 answer
956 views

Dear Support

I use radgridview in WPF (vb.net), and i spent deays already to figure out how to get the index of the current row.

If the SelectionUnit = Fullrow then its easy, because:

     Dim CurrentRow As Integer = rgv_STATIONS.Items.IndexOf(rgv_STATIONS.SelectedItem)

will give it back . But unfortunately i have to use SelectionUnit = Cell. With this setting the above CurrentRow variable always gets -1.

I need to know it in case of CellEditEnded and at SelectedCellsChanged events. Getting the column index in the same places is easy, but please help me to find the rowindex as well, i lost half of my hair already due to this :)

 

Thank you

Peter

Petar Mladenov
Telerik team
 answered on 24 Dec 2021
0 answers
172 views

Hi 

I Found Gridview bug.

A phenomenon in which a blank row appears in the gridview when the database of the same index is called.
The itemsource of gridview uses observablecollection and is loaded from database. If data of the same index is loaded, it is broken. Attach pictures
Kyuha
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 asked on 24 Dec 2021
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