Questions on UI for WPF Forum

3 answers

194 views

ChartView Custom TooltipTempate in code behind

The ChartView ToolTip should look like the on in the attached gif.

I figured out that I have to change the TooltipTemplate.

But how can I get the LineSeries X values and Y Values ? In my Source code instead of X and Y I should see in the ToolTip the X value (example: January) and Y Value (example: 2,00). Any ideas ?

Here is my unfinished Source Code:

private

LineSeries CreateLineSeries(KeyValuePair<ChartSerie, List<ChartDataPoint>> chartSeries, ChartLegendSettings legendSettings,

int colorPaletteIndex)

{

// TODO: tooltip work in progress, show Format in Tooltips

FrameworkElementFactory tooltipFramework = new FrameworkElementFactory(typeof(Border));

tooltipFramework.SetValue(Border.BackgroundProperty, new SolidColorBrush(Colors.DimGray));

tooltipFramework.SetValue(Border.PaddingProperty, new Thickness(5));

FrameworkElementFactory tooltipStackpanelOne = new FrameworkElementFactory(typeof(StackPanel)) { Name = "tooltipStackpanelOne" };

tooltipStackpanelOne.SetValue(StackPanel.OrientationProperty, Orientation.Vertical);

tooltipFramework.AppendChild(tooltipStackpanelOne);

FrameworkElementFactory textBlockOne = new FrameworkElementFactory(typeof(TextBlock));

textBlockOne.SetValue(TextBlock.TextProperty, "X");

textBlockOne.SetValue(TextBlock.ForegroundProperty, new SolidColorBrush(Colors.White));

textBlockOne.SetValue(TextBlock.FontWeightProperty, FontWeights.DemiBold);

FrameworkElementFactory textBlockTwo = new FrameworkElementFactory(typeof(TextBlock));

textBlockTwo.SetValue(TextBlock.TextProperty, "Y");

textBlockTwo.SetValue(TextBlock.ForegroundProperty, new SolidColorBrush(Colors.White));

textBlockTwo.SetValue(TextBlock.FontWeightProperty, FontWeights.DemiBold);

tooltipStackpanelOne.AppendChild(textBlockOne);

tooltipStackpanelOne.AppendChild(textBlockTwo);

var lineSerie = new LineSeries()

{

VerticalAxis = CreateMultipleVerticalAxis(chartSeries, colorPaletteIndex, out var multipleVerticalAxis) ? multipleVerticalAxis : null,

ZIndex = 150, // the line series should always be displayed on top of other series.

StrokeThickness = 3.5,

LegendSettings = (SeriesLegendSettings)legendSettings,

Opacity = 0.8,

//SeriesAnimation = new ChartRevealAnimation()

//{

// AnimationDirection = AnimationDirection.In,

// Orientation = Orientation.Horizontal,

// Duration = new TimeSpan(0, 0, 0, 1, 500),

// Delay = new TimeSpan(0, 0, 0, 0, 555),

//},

//PointAnimation = new ChartMoveAnimation()

//{

// MoveAnimationType = MoveAnimationType.Left,

// Duration = new TimeSpan(0, 0, 0, 0, 400),

// Delay = new TimeSpan(0, 0, 0, 0, 155),

//},

StackGroupKey = chartSeries.Key.Group,

CombineMode = string.IsNullOrEmpty(chartSeries.Key.Group) ? ChartSeriesCombineMode.None : ChartSeriesCombineMode.Stack,

PointTemplate = new DataTemplate()

{

VisualTree = AddPointsToSeries(chartSeries, colorPaletteIndex),

},

LabelDefinitions =

{

// set the clarion format for the labels

new ChartSeriesLabelDefinition()

{

Template = new DataTemplate()

{

VisualTree = GetSeriesFormat(chartSeries),

}

},

TooltipTemplate = new DataTemplate()

{

VisualTree = tooltipFramework,

}

};

//// this is the old way of adding point to the LineSeries

//string pointTemplateString =

//    @"<DataTemplate xmlns=""http://schemas.microsoft.com/winfx/2006/xaml/presentation"" xmlns:x=""http://schemas.microsoft.com/winfx/2006/xaml"">" +

// @"<Ellipse Fill=""Black"" Width=""5"" Height=""5"" /></DataTemplate>";

//lineSerie.PointTemplate = (DataTemplate)XamlReader.Parse(pointTemplateString);

// this is the color of line series

if (chartSeries.Key.ColorHex != null)

{

lineSerie.Stroke = (SolidColorBrush)(new BrushConverter().ConvertFrom(chartSeries.Key.ColorHex));

}

foreach (ChartDataPoint serie in chartSeries.Value)

{

lineSerie.DataPoints.Add(new CategoricalDataPoint()

{

Category = serie.XPoint.Label,

Value = (double?)serie.Value,

});

}

return lineSerie;

}

ChartView

answered on 20 Sep 2018

3 answers

179 views

Lazy load subgroups when GroupBy

Hi,

Looks like, using the VirtualQueryableCollectionView, it is possible to lazy load the data if it is flat, but it is not possible if the data is displayed hierarchically. That is, using VirtualQueryableCollectionView, if GroupBy is done for single\multiple columns, the grouping is done only of the initial few records, obviously, as only few records are loaded initially by the VirtualQueryableCollectionView.

If there are multiple groupings then there is a hierarchy, and one can drill down subgroups step by step. I wanted to know if there is a way with GridView to lazily load the subgroup items.

Any suggestions will be helpful.

thanks

GridView

answered on 19 Sep 2018

0 answers

72 views

how to replace a field with a symbol

what i need to do is :

In the xaml file, there is an MergeField with PropertyPath isYes,if isYes == 'Y',I want to replace the MergeField with a checked box like symbol ☑

How to do this?

RichTextBox

asked on 19 Sep 2018

1 answer

198 views

How to capture drop down list close event for GridViewComboBoxColumn

I have a GridViewComboBoxColumn in my grid, and want to capture drop down list close event to finish some task at that time. But I did not find proper event in GridViewComboBoxColumn for this, anyone can help? Thanks!

GridView

answered on 18 Sep 2018

2 answers

210 views

Delete dashed/dotted line in selected shape on RadDiagram

Hi. How i can delete dashed/dotted line in selected shape on RadDiagram?

Diagram

answered on 18 Sep 2018

3 answers

210 views

Changing Map Provider at the Runtime

Hi There

I have a scenario where I need to show maps under RadPane , i.e. Bing Tab shows Bing Map, Open Street Tab shows Open Streets and Empty provider Tab shows Shapefile map.Under each RadPane i have individual RadMap for each kind of provider.So my question is,

Should I use 1 radMap for all providers and when user clicks tabs , i change the map provider at the runtime, OR should i have individual radMaps for each provider under each tab. What are the performance issues associated with each approach.

Cheers

Map

answered on 18 Sep 2018

2 answers

136 views

Reorder issue with TileList inside TileView

Hello,

we discovered an issue when having a TileList-Control inside a TileView. The reorder doesn't work, the items just disappear...

Please look at the following example code:

<Grid>

<Grid.ColumnDefinitions>

<ColumnDefinition Width="*"/>

</Grid.ColumnDefinitions>

<telerik:RadTileList Grid.Column="0">

<telerik:Tile TileType="Single" Background="#FF00A100" Content="A"/>

<telerik:Tile TileType="Double" Background="#FFA10000" Content="B"/>

<telerik:Tile TileType="Single" Background="#FF0000A1" Content="C"/>

</telerik:RadTileList>

<telerik:RadTileView Grid.Column="1">

<telerik:RadTileList>

<telerik:Tile TileType="Single" Background="#FF00A100" Content="A"/>

<telerik:Tile TileType="Double" Background="#FFA10000" Content="B"/>

<telerik:Tile TileType="Single" Background="#FF0000A1" Content="C"/>

</telerik:RadTileList>

</telerik:RadTileView>

</Grid>

TileList

answered on 17 Sep 2018

3 answers

104 views

Latest UI For WPF Release throws exception when using RadOpenFolderDialog

I just upgraded to the latest release of UI for WPF (2018.3.blah blah). So far everything has been working fine. But today I invoked a bit of my code that uses RadOpenFolderDialog. The code is pretty simple:

var dlg = new RadOpenFolderDialog
{
InitialDirectory = Settings.LibraryFolder,
Multiselect = false,
};

(I have verified the "Settings.LibraryFolder" points to a valid, existing folder at the time this function is called)

It then throws an exception. The outer exception message is this:

"Provide value on 'System.Windows.Markup.StaticResourceHolder' threw an exception."

The inner exception message is this:

"Cannot find resource named 'BreadCrumbBarItemCustomStyle'. Resource names are case sensitive"

I do not now, nor have I ever had a resource of that name so I have to assume this is something inside the Telerik release that was inadvertently removed. Can you help me?

I don't know if it is relevant but early on in my app I use the StyleManager to set an application theme

StyleManager.ApplicationTheme = new Windows8TouchTheme();

Also I am *NOT* using the "NoXaml" approach

Help...?

Window

answered on 17 Sep 2018

2 answers

108 views

Latest UI For WPF Release throws exception when using RadOpenFolderDialog

(This is a duplicate of a thread I accidentally started in the wrong subforum here: https://www.telerik.com/forums/latest-ui-for-wpf-release-throws-exception-when-using-radopenfolderdialog)

I just upgraded to the latest release of UI for WPF (2018.3.blah blah). So far everything has been working fine. But today I invoked a bit of my code that uses RadOpenFolderDialog. The code is pretty simple:

var dlg = new RadOpenFolderDialog
{
InitialDirectory = Settings.LibraryFolder,
Multiselect = false,
};
var res = dlg.ShowDialog();

(I have verified the "Settings.LibraryFolder" points to a valid, existing folder at the time this function is called)

It then throws an exception. The outer exception message is this:
"Provide value on 'System.Windows.Markup.StaticResourceHolder' threw an exception."

The inner exception message is this:
"Cannot find resource named 'BreadCrumbBarItemCustomStyle'. Resource names are case sensitive"

I do not now, nor have I ever had a resource of that name so I have to assume this is something inside the Telerik release that was inadvertently removed. Can you help me?
I don't know if it is relevant but early on in my app I use the StyleManager to set an application theme

StyleManager.ApplicationTheme = new Windows8TouchTheme();

Also I am *NOT* using the "NoXaml" approach

Help...?

FileDialogs

answered on 17 Sep 2018

0 answers

84 views

Not able to select items(with keyboard) which are added through combobox

I have combined RadAutoCompleteBox with Combobox with multiple selection mode. When I select item from drop down of combobox the item gets added in the autocomplete box and the remaining portion of autocomplete box will be used for searching. But in this case I am not able to select the added items.

See attached screenshot, here the 2 items which are already added named TestPalga2 and TestPalga3 cant be selected. I want these items to select and remove on delete button press of keyboard.

AutoCompleteBox

asked on 17 Sep 2018