Questions on UI for WPF Forum

3 answers

778 views

RadGridViewAutomationPeer holding old objects in memory

What role does RadGridViewAutomationPeer?

I have a RadGridView in my application, but when I change my DataContext to a new object containing a new List for the ItemsSource, the RadGridView is still holding all the old objects from the old List used by the ItemsSource in memory through this RadGridViewAutomationPeer. Not knowing what the AutomationPeer does, I'm at a bit of a loss as to how to get it to release those old objects. I wasn't able to find any useful information on this class. I've attached the memory retention chart from dotMemory showing my CurveSets being held.

Here's the xaml for the chart:

<telerik:RadGridView

x:Name="CurveList"

Grid.Row="1"

AutoGenerateColumns="False" ItemsSource="{Binding Path=Wells}"

IsFilteringAllowed="False" ShowGroupPanel="False" CanUserSortColumns="False"

SelectionMode="Single"

IsSynchronizedWithCurrentItem="True"

CurrentItem="{Binding Path=DeclineConsolidator.CurrentCurve, Mode=TwoWay}"

GroupRenderMode="Flat" EnableRowVirtualization="True">

<telerik:RadGridView.Resources>

<consolidator:WellNameStyleSelector x:Key="NameStyleSelector">

<consolidator:WellNameStyleSelector.CleanStyle>

<Style TargetType="{x:Type telerik:GridViewCell}">

<Setter Property="FontStyle" Value="Normal" />

</Style>

</consolidator:WellNameStyleSelector.CleanStyle>

<consolidator:WellNameStyleSelector.DirtyStyle>

<Style TargetType="{x:Type telerik:GridViewCell}">

<Setter Property="FontStyle" Value="Italic" />

</Style>

</consolidator:WellNameStyleSelector.DirtyStyle>

</consolidator:WellNameStyleSelector>

</telerik:RadGridView.Resources>

<telerik:RadGridView.Columns>

<telerik:GridViewDataColumn Header="" Width="25" MaxWidth="25" MinWidth="25" IsReadOnly="True">

<telerik:GridViewDataColumn.CellTemplate>

<DataTemplate>

<Image

Source="{Binding Source={x:Static pcc:ImageSourceConstants.WarningIcon}}"

Visibility="{Binding Path=IsValid, Converter={StaticResource InverseBoolToVisibilityConverter}}"

Tag="{Binding Path=ErrorMessageAlert}"

Width="15" Height="15" Margin="0,0,0,0">

<i:Interaction.Behaviors>

<infrastructure:ImageGridValidationBehaviour />

</i:Interaction.Behaviors>

</Image>

</DataTemplate>

</telerik:GridViewDataColumn.CellTemplate>

</telerik:GridViewDataColumn>

<telerik:GridViewDataColumn Header="{x:Static prop:Resources.WellListColumnHeader}"

IsReadOnly="True"

DataMemberBinding="{Binding Path=DisplayName}" Width="*"

CellStyleSelector="{StaticResource NameStyleSelector}" />

</telerik:RadGridView.Columns>

</telerik:RadGridView>

GridView

answered on 07 Apr 2017

0 answers

97 views

How to make each character uppcase

Hi, my maskedtextinput is only allowed to have capitalized characters. May I ask how should I do that? I've enforced it on the model side but it moves the next available entry to the front of the masked instead of always keeping it maintained on the right.

MaskedInput (Numeric, DateTime, Text, Currency)

asked on 06 Apr 2017

3 answers

159 views

Export and print RadGridView in XBAP

Is it possible to export grid data in partial trust XBAP application? I know that SaveFileDialog is not permited in partial trust, but Silverlight has his own SaveFileDialog and it works.

Next question. We want to print grid but the orginal form of print view is hopeless. There are not margins, some data is cutted, there are not title. Is it possible to override default print? We want to use the same filters and columns like in grid when print is generating.

GridView

answered on 06 Apr 2017

0 answers

90 views

Speed GridView Printing

Hi, I'm using the same approach as a demo I came across on a forum post. It works well if the # of rows is small, but once you start to add hundreds of rows, the performance goes down dramatically. Any idea how to solve this?

Demo can be found here. It's almost like yours except with a for loop creating a larger dataset. Takes over 5 mins to get the print.

https://uploadz.co/w6b9ghawf6uu

GridView

asked on 06 Apr 2017

1 answer

90 views

RadPropertGrid isn't setting the annotation "DisplayName" of properties while using PropertySetMode for showing common properties of multiple objects

I am using you own example in Setting PropertSets

In this I've set DisplayName of FillColor property, but it don't get it's this specified display name, but rather it shows the property name.

MainWindow.xaml

<Grid>

<Grid.Resources>

<local:ViewModel x:Key="vm" />

</Grid.Resources>

<telerik:RadPropertyGrid DataContext="{StaticResource vm}"

Item="{Binding Shapes}"

PropertySetMode="Intersection"/>

</Grid>

ViewModel.cs

public class ViewModel

{

public IEnumerable<object> Shapes

{

get

{

return new List<object>()

{

new Ellipse()

{

Center = new Point(1,1),

FillColor = Colors.Red,

RadiusX1 = 4, RadiusX2 = 2

},

new RegularPolygon()

{

Center = new Point(3,2),

FillColor = Colors.Blue,

CornersCount = 3,

SideLength = 10

}

};

}

public class Ellipse

{

[DisplayName("Fill Color")]

public Color FillColor { get; set; }

public double RadiusX1 { get; set; }

public double RadiusX2 { get; set; }

public Point Center {

get;

set; }

}

public class RegularPolygon

{

public int CornersCount { get; set; }

public Color FillColor { get; set; }

public Point Center {

get;

set; }

public double SideLength { get; set; }

}

Kindly suggest me it's solution.

PropertyGrid

answered on 06 Apr 2017

3 answers

1.0K+ views

Show spinner/progress while data is loading

I am binding the GridView to a ViewModel that is responsible for loading the data from my repository. I would like to show a spinner control while the data is being loaded. Let's suppose I have a property on my ViewModel named DataLoading. I know I can accomplish this with a style, but I'm not sure which element of the GridView I should apply the style to.

How can I accomplish this with the GridView? I can easily hide the whole GridView and show a spinner, but instead I'd like to replace the area in which rows are presented with a spinner.

Thanks,

Mike

GridView

answered on 06 Apr 2017

3 answers

135 views

Coded UI + RadCartesianChart

Hi,

I would like to ask how can I find RadCartesianChart on Visual Studio 2015 + Coded UI Test.

http://www.telerik.com/teststudio/visual-studio-testing-plugin-benefits - This is same example for Grid.

I try his but I can't have that option Find.ById

RadCartesianChart radCartesianChart = Find.

Chart

answered on 06 Apr 2017

1 answer

95 views

Docking Binding References

Hi Telerik,

We have a RadDocking control in a child control that resides within a RadDocking control in a parent control.

The parent control contains a RadDocking control which encompasses a Tab control, and the child control resides in one of these Tab controls, where the RadDocking control resides in another TabControl inside the child control. The parent and child controls each have their own Views and VMs.

When binding 'SelectedItem' in myDatagrid, we receive the following binding error:

Cannot find source for binding with reference 'ElementName=myDatagrid, RelativeSource={RelativeSource=Self}'. BindingExpression:Path=SelectedItem; DataItem=null; target element is 'InvokeCommandAction' (HashCode=57688201); target property is 'CommandParameter' (type 'Object')

This error disappears and we are able to bind to 'SelecteItem' only when we remove the 2nd (second) RadDocking control within the parent.

Please see attached diagram for visual reference.

Could you please advise?

Kind regards

Docking

answered on 06 Apr 2017

5 answers

360 views

How do we freeze grid rows

Hi,

Like "FrozenColumnCount", Is there any provision for freezing rows?

Regards,
Norbert John

GridView

answered on 06 Apr 2017

1 answer

371 views

Change color of the spinner

Hi, I would like to change the color of my BusyIndicator. I have been able to change the background and the stroke but I can't modify the "spinner" colors.

This is quite a simple question that have been answered several times but I don't understand how to implement the solutions I saw in my code. Maybe you will be able to explain me the solution for the following code:

<ControlTemplate x:Key="GridViewLoadingIndicatorTemplate" TargetType="{x:Type grid:GridViewLoadingIndicator}">

<Border x:Name="BusyIndicatorBackground" Background="#F1F1F1" Opacity="0">

<VisualStateManager.VisualStateGroups>

<VisualStateGroup x:Name="CommonStates">

<VisualState x:Name="Idle"/>

<VisualState x:Name="Loading">

<Storyboard RepeatBehavior="Forever">

<DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="BusyIndicatorBackground" Storyboard.TargetProperty="Opacity">

<SplineDoubleKeyFrame KeyTime="0" Value="1"/>

</DoubleAnimationUsingKeyFrames>

<DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="BusyIndicator" Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[2].(RotateTransform.Angle)">

<SplineDoubleKeyFrame KeyTime="00:00:01" Value="180"/>

</DoubleAnimationUsingKeyFrames>

</Storyboard>

</VisualState>

</VisualStateGroup>

</VisualStateManager.VisualStateGroups>

<Path x:Name="BusyIndicator"

Stretch="Fill"

Stroke="{TemplateBinding BorderBrush}"

StrokeThickness="{TemplateBinding BorderThickness}"

Fill="{TemplateBinding Background}"

Margin="{TemplateBinding Padding}"

HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"

VerticalAlignment="{TemplateBinding VerticalContentAlignment}"

Width="36"

Height="36"

Data=

"M18,5.0000002 C10.820298,5 5,10.820298 5.0000002,18 5,25.179701 10.820298,31 18,31 25.179701,31 31,25.179701 31,18 31,10.820298 25.179701,5 18,5.0000002 z M18,0 C27.941126,0 36,8.0588746 36,18 36,27.941126 27.941126,36 18,36 8.0588746,36 0,27.941126 0,18 0,8.0588746 8.0588746,0 18,0 z"

RenderTransformOrigin="0.5,0.5">

<Path.RenderTransform>

<TransformGroup>

<ScaleTransform/>

<SkewTransform/>

<RotateTransform Angle="-180"/>

<TranslateTransform/>

</TransformGroup>

</Path.RenderTransform>

</Path>

</Border>

</ControlTemplate>