Questions on UI for WPF Forum

2 answers

188 views

[Solved] Chart Legend Items not clearing

I have a RadChart that has a dynamic set of lineSeries that i add to it after recieving the data from an end device. When i try to clear the Chart for new data, the legend Items do not get cleared.

private void AddTrendPoints(TrendFiles trendfile)

{

if (this.trendGraph.Dispatcher.Thread != Thread.CurrentThread)

{

this.trendGraph.Dispatcher.Invoke(DispatcherPriority.Normal, new DispatcherOperationCallback(delegate

{

#region Setup Series

this.trendGraph.DefaultView.ChartArea.DataSeries.Clear();

this.trendGraph.DefaultView.ChartArea.Legend.Items.Clear();

this.trendGraph.SamplingSettings.SamplingThreshold = trendfile.Records;

DataSeries series = new DataSeries();

LineSeriesDefinition lineDefinition = new LineSeriesDefinition();

ChartLegendItem legendItem = new ChartLegendItem();

int count = 0;

foreach(TrendVariable trendVar in trendfile.Variables)

{

series = new DataSeries();

lineDefinition = new LineSeriesDefinition();

legendItem = new ChartLegendItem();

lineDefinition.ShowItemLabels = false;

lineDefinition.ShowPointMarks = false;

lineDefinition.SeriesName = trendVar.Name;

lineDefinition.LegendDisplayMode = LegendDisplayMode.SeriesLabel;

series.LegendLabel = trendVar.Name;

series.Definition = lineDefinition;

series.Definition.Appearance.Stroke = colors[count];

series.Definition.Appearance.Fill = colors[count];

legendItem.Label = trendVar.Name;

legendItem.Background = colors[count];

legendItem.Foreground = Brushes.White;

trendGraph.DefaultView.ChartLegend.Items.Add(legendItem);

foreach (DataPoint point in trendVar.points)

{

series.Add(point);

}

trendGraph.DefaultView.ChartArea.DataSeries.Add(series);

count++;

}

#endregion

return null;

}), null);

}

else

{

#region Setup Series

this.trendGraph.DefaultView.ChartArea.DataSeries.Clear();

this.trendGraph.DefaultView.ChartArea.Legend.Items.Clear();

DataSeries series = new DataSeries();

LineSeriesDefinition lineDefinition = new LineSeriesDefinition();

ChartLegendItem legendItem = new ChartLegendItem();

int count = 0;

foreach (TrendVariable trendVar in trendfile.Variables)

{

series = new DataSeries();

lineDefinition = new LineSeriesDefinition();

legendItem = new ChartLegendItem();

lineDefinition.ShowItemLabels = false;

lineDefinition.ShowPointMarks = false;

lineDefinition.SeriesName = trendVar.Name;

lineDefinition.LegendDisplayMode = LegendDisplayMode.SeriesLabel;

series.LegendLabel = trendVar.Name;

series.Definition = lineDefinition;

series.Definition.Appearance.Stroke = colors[count];

series.Definition.Appearance.Fill = colors[count];

legendItem.Label = trendVar.Name;

legendItem.Background = colors[count];

legendItem.Foreground = Brushes.White;

trendGraph.DefaultView.ChartLegend.Items.Add(legendItem);

foreach (DataPoint point in trendVar.points)

{

series.Add(point);

}

trendGraph.DefaultView.ChartArea.DataSeries.Add(series);

count++;

}

#endregion

}

After the initial load, the legend items just append to the legend. So i get repeat Series legend items. Its not being cleared on the Legend.Items.Clear() method.

Chart

answered on 02 Feb 2011

1 answer

73 views

Customize selected appearance / remove selection style

Hi Telerik,

I have a couple of question about how to change the appeance of the selection style.

1. I have disabled editing and do not wish the selection to display a rectangular border around the clicked cell, i just want the row to be selected as per default when the application starts and no cell has been clicked.

2. Can I remove the selection style completely? I'm using the treelistview to display a set of data where I have disabled selection, but when I populate the data, as per default the first item is selected and given the selection style which ruins the layout abit. I still wish to keep the rowheader but without the arrow icon used for selection.

Thanks in advance,

/Kasper Schou

TreeListView

answered on 02 Feb 2011

4 answers

167 views

Persistence

Hello,

I have the need to be able to persist and restore the state of a RadDataFilter. I was hoping to be able to save-off and restore the FilterDescriptors collection, but unfortunately it is read-only. So, what would be the best approach to making this happen? Is persistence supported at all?

Thanks,
Mark

DataFilter

answered on 02 Feb 2011

2 answers

146 views

GridView DataBinding Questions

Hi,

I have a problem using the

GridViewCheckBoxColumn
GridViewComboBoxColumn

When I edit data in a "GridViewDataColumn" and execute my custom "UpdateItemCommand" I have no problems and my SelectedItem displays the changes which were entered in the "GridViewDataColumn".
However the problem occurs when I edit a "GridViewCheckBoxColumn" or "GridViewComboBoxColumn". The SelectedItem does not display the changes made by these Columns.

Thank you for your help!
Martin

<my:RadGridView x:Name="RadGridView" SelectedItem="{Binding SelectedItem, Mode=TwoWay}" ItemsSource="{Binding PLC_Items}>

<my:RadGridView.Columns>

<my:GridViewDataColumn Header="ID" DataMemberBinding="{Binding ID}" IsReadOnly="True"/>

<my:GridViewDataColumn Header="ItemName" DataMemberBinding="{Binding Name}" Width="*"/>

<my:GridViewComboBoxColumn Header="Function" ItemsSource="{Binding AllFunctions}" DataMemberBinding="{Binding Function}"/>

<my:GridViewCheckBoxColumn Header="Auto Update" DataMemberBinding="{Binding AutoUpdate, Mode=TwoWay}"/>

<my:GridViewColumn Width="Auto">

<my:GridViewColumn.CellTemplate>

<DataTemplate>

<StackPanel Orientation="Horizontal" Margin="2">

<telerik:RadButton Command=

"{Binding DataContext.WriteItemCommand, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type my:RadGridView}}}"

/>

<telerik:RadButton Command=

"{Binding DataContext.UpdateItemCommand, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type my:RadGridView}}}"

/>

<telerik:RadButton Command=

"{Binding DataContext.ReadItemCommand, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type my:RadGridView}}}"

/>

<telerik:RadButton Command=

"{Binding DataContext.DeleteItemCommand, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type my:RadGridView}}}"

/>

</StackPanel>

</DataTemplate>

</my:GridViewColumn.CellTemplate>

</my:GridViewColumn>

</my:RadGridView.Columns>

</my:RadGridView>

GridView

answered on 02 Feb 2011

1 answer

190 views

filtering date time

Hello

When the Grid View Data Column bound to date time,

If there is string format that show only the time it looks like bug.

We need that the filtering controls display the same date once.

Looks at the attach pictures.

How to resolve this problem?

Best regards

Ehud.

GridView

answered on 02 Feb 2011

1 answer

214 views

MouseLeftButtonDown-Event don't works

Hello friends,

I am trying to implement the MouseLeftButtonDown-Event for some PanelBarItems. But the Event isn't fired. Could you please help me to find out why it isn't?

<telerik:RadPanelBar ExpandMode="Multiple" VerticalAlignment="Stretch" Name="pbarMain">

<telerik:RadPanelBarItem VerticalAlignment="Stretch" IsExpanded="True">

<telerik:RadPanelBarItem.Header>

<StackPanel Orientation="Horizontal" Margin="5 4 5 5">

<Image Source="Images/kapazität.ico"

Style="{StaticResource style_image_20x20}"/>

<Label Content="Kapazitäten" FontWeight="Bold"/>

</StackPanel>

</telerik:RadPanelBarItem.Header>

<telerik:RadPanelBarItem MouseLeftButtonDown="RadPanelBarItem_MouseDown"

Tag="KapaViewPage.xaml">

<telerik:RadPanelBarItem.Header>

<StackPanel Orientation="Horizontal" Margin="10 4 5 5">

<Image Source="Images/Document_search.ico"

Style="{StaticResource style_image_16x16}"/>

<Label Content="Anzeigen/Bearbeiten"/>

</StackPanel>

</telerik:RadPanelBarItem.Header>

</telerik:RadPanelBarItem>

private void RadPanelBarItem_MouseDown(object sender, MouseButtonEventArgs e)

{

if (sender != null)

{

RadPanelBarItem item = sender as RadPanelBarItem;

if (item.Tag != null)

{

string ziel = item.Tag.ToString();

if (ziel.Length > 0) mvm.Navigate(ziel);

}

PanelBar

answered on 02 Feb 2011

2 answers

183 views

Is Expand property Not Working in RadTreeListView

Hi,
Previously I was using this code in WPF .net 4.0 framework and was working correctly.

Code at RowLoaded Event:

TreeListViewRow row = e.Row as TreeListViewRow;

Binding binding = new Binding("IsExpanded") { Source = row.Item };

binding.Mode = BindingMode.TwoWay;

row.SetBinding(TreeListViewRow.IsExpandedProperty, binding);

which indirectly calls the

RowIsExpandedChanging event somehow.
But now when I migrated to .net 3.5 framework, due to some limitations, the same code was not working.
Now it is not calling the RowIsExpandedChanging event.
Please suggest me how to overcome from this problem, is there any other way to do the same in .net 3.5.

Thanks in Advance.

TreeListView

answered on 02 Feb 2011

3 answers

141 views

[Solved] StackedBar Legend item not showing.

Hi, I have a problem when populating stacked bar charts. My code is following:
XMAL:

<telerik:RadChart x:Name="chart" PaletteBrushesRepeat="False" telerik:Theming.Theme="Summer">

</telerik:RadChart>

C#:

chart.SeriesMappings.Clear();

chart.DefaultView.ChartArea.DataSeries.Clear();

chart.DefaultView.ChartLegend.UseAutoGeneratedItems = true;

chart.DefaultSeriesDefinition.LegendDisplayMode = LegendDisplayMode.SeriesLabel;

for (int i = 0; i < model.Captions.Count; i++ )

{

SeriesMapping sm = new SeriesMapping();

StackedBarSeriesDefinition dd = new StackedBarSeriesDefinition();

dd.StackGroupName = "Stack1";

sm.SeriesDefinition = dd;

sm.LegendLabel = "Stacked Bar " + i;

sm.CollectionIndex = i;

ItemMapping im1 = new ItemMapping();

im1.DataPointMember = DataPointMember.YValue;

sm.ItemMappings.Add(im1);

chart.SeriesMappings.Add(sm);

}

List<double[]> itemsSource = new List<double[]>();

for (int i = 0; i < model.Children.Count; i++)

{

double[] d = model.Children[i].Values.Select(s => s.AdjustedValue).ToArray();

itemsSource.Add(d);

}

I'm not sure where I'm going wrong here but I'd thought "sm.LegendLabel = "Stacked Bar " + i; " would provide my with legend items.

Best regards
Kristján.

Chart

answered on 02 Feb 2011

4 answers

121 views

GridView Group Dragging in the menu

Hi There

I have a menu which contains a gridview, I cant seem to drag column headers to the group header though when in that menu. The menu just dissappears. Code for the grid below:

<telerikGridView:RadGridView x:Name="radGridAssets" Grid.Column="0" Grid.Row="0"

Margin="0" ShowGroupPanel="True" VerticalAlignment="Stretch" HorizontalAlignment="Stretch"

ShowInsertRow="False" RowIndicatorVisibility="Collapsed"

AutoGenerateColumns="False"

ItemsSource="{Binding FullAssetList}">

<!--<telerikGridView:RadGridView.GroupDescriptors>

<telerikData:GroupDescriptor Member="SiteName" />

</telerikGridView:RadGridView.GroupDescriptors>-->

<telerikGridView:RadGridView.SortDescriptors>

<telerikData:SortDescriptor Member="SiteId" SortDirection="Ascending" />

<telerikData:SortDescriptor Member="OrderByProcessType" SortDirection="Ascending" />

</telerikGridView:RadGridView.SortDescriptors>

<telerikGridView:RadGridView.Columns>

<telerikGridView:GridViewDataColumn Header="" Width="Auto">

<telerikGridView:GridViewDataColumn.CellTemplate>

<DataTemplate>

<CheckBox x:Name="chkSelectedAsset" IsChecked="{Binding IsSelected, Mode=TwoWay}"

Unchecked="chkSelectedAsset_Unchecked" Checked="chkSelectedAsset_Checked" />

</DataTemplate>

</telerikGridView:GridViewDataColumn.CellTemplate>

</telerikGridView:GridViewDataColumn>

<telerikGridView:GridViewDataColumn Header="Site" DataMemberBinding="{Binding SiteName}" IsReadOnly="True">

<telerikGridView:GridViewDataColumn.GroupHeaderTemplate>

<DataTemplate>

<StackPanel Orientation="Horizontal" >

<TextBlock Text="{Binding Group.Key}" />

<Button x:Name="buttAssetGridSelectAll" Margin="5,0,0,0" Content="All" FontSize="10" Tag="{Binding Group}" Click="buttAssetGridSelectAll_Click" />

<Button x:Name="buttAssetGridSelectNone" Content="None" FontSize="10" Tag="{Binding Group}" Click="buttAssetGridSelectNone_Click" />

</StackPanel>

</DataTemplate>

</telerikGridView:GridViewDataColumn.GroupHeaderTemplate>

</telerikGridView:GridViewDataColumn>

<telerikGridView:GridViewDataColumn Header="Asset Name" DataMemberBinding="{Binding AssetName}" />

<telerikGridView:GridViewDataColumn Header="Process" DataMemberBinding="{Binding ProcessType}" />

<telerikGridView:GridViewDataColumn Header="SiteId" DataMemberBinding="{Binding SiteId}" IsReadOnly="True" IsVisible="False" />

<telerikGridView:GridViewDataColumn Header="OrderBy" DataMemberBinding="{Binding OrderByProcessType}" IsReadOnly="True" IsVisible="False" />

</telerikGridView:RadGridView.Columns>

</telerikGridView:RadGridView>

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