or
3 answers
344 views
I am working through your documentation and am trying to get the 2nd TimeSpanPicker working.
<telerik:RadTimeSpanPicker x:Name="Duration" Value="{Binding SelectedDuration, Mode=TwoWay}"...
My implementation (different source & different name):
<telerik:RadTimeSpanPicker Grid.Row="1" x:Name="Duration" Value="{Binding SelectedDuration, Mode=TwoWay}" StringFormat="hh\:mm' hours'" TimeSpanWatermarkContent="Select duration..."> <telerik:RadTimeSpanPicker.TimeSpanComponents> <wpf:TimeSpanDurationComponent ItemsSource="{Binding Durations, Mode=OneWayToSource}" Header="Minutes"/> </telerik:RadTimeSpanPicker.TimeSpanComponents></telerik:RadTimeSpanPicker>I added the DurationTimeSpanComponent (wpf.TimeSpanDurationComponent) and have the Durations collection on my MV.
However, I get this error during runtime:
System.Windows.Data Error: 2 : Cannot find governing FrameworkElement or FrameworkContentElement for target element. BindingExpression:Path=Durations; DataItem=null; target element is 'TimeSpanDurationComponent' (HashCode=46098163); target property is 'ItemsSource' (type 'IEnumerable')
Your example includes that control is a container. Is that important?
What I see is that you include a namespace that doesn't seem to be part of my install. When I attempt to set this xmlns I don't have it as an option. And, when I go to add a reference this is not part listed. Is the documentation bad? Is this QuickStart namespace supposed to be part of most common implementations?
xmlns:telerikQuickStart="clr-namespace:Telerik.Windows.Controls.QuickStart;assembly=QuickStart.Common"
Nasko
Telerik team
answered
on
11 Mar 2016
3 answers
72 views
Hello,
I'm using a RadGridView, and in it's footer, a textbox element inside a GroupFooterTemplate. Can I, from codebehind, in a TextBox event (e.g. TextChanged) somehow access the GridView that contains my TextBox? When I check the sender's properties, the parent is null.
Also, can I somehow access the group information and the other groups' TextBoxes?
Any help would be appreciated.
I'm using a RadGridView, and in it's footer, a textbox element inside a GroupFooterTemplate. Can I, from codebehind, in a TextBox event (e.g. TextChanged) somehow access the GridView that contains my TextBox? When I check the sender's properties, the parent is null.
Also, can I somehow access the group information and the other groups' TextBoxes?
Any help would be appreciated.
Stefan
Telerik team
answered
on
10 Mar 2016
1 answer
51 views
Dear Telerik Support
I just started using your controls for WPF, to see if it suits the needs of our company
Starting by doing basic examples, I stumbled upon the RadGridView pagination
I am trying to use this example
http://demos.telerik.com/silverlight/#DomainDataSource/MVVM and
and this documentation
http://docs.telerik.com/devtools/wpf/controls/raddatapager/getting-started#adding-raddatapager
But it seems my grid wont page if I dont use this
this.view = new QueryableDomainServiceCollectionView<Customer>(context, getCustomersQuery);
this.view.PageSize = 10;
thus attributing the PageSize to it.
right now I use a ObservableCollection<Entity> List.
So my question is: Where how can I use the above mentioned class (QueryableDomainServiceCollectionView) to support my need of pagination?
I don't want to paginate it manually, by using the Unbound mode. and I would prefer to avoid that all data goes into memory
I will attach the code of my sample project here. Not you must install the PropertyChanged.Fody in order to run it.
Stefan
Telerik team
answered
on
10 Mar 2016
2 answers
156 views
<t:RadGridView x:Name="Logs"> <t:RadGridView.Columns> <t:GridViewDataColumn CellTemplateSelector="{StaticResource IconTemplateSelector}" /> <t:GridViewDataColumn DataMemberBinding="{Binding LogLevel,Mode=OneWay}" Header="Level" CellStyle="{StaticResource PaddedCell}"/> <t:GridViewDataColumn DataMemberBinding="{Binding LogID,Mode=OneWay}" Header="LogID"/> <t:GridViewDataColumn DataMemberBinding="{Binding MachineDateTime,Mode=OneWay}" Header="Machine Time" CellStyle="{StaticResource PaddedCell}"/> <t:GridViewDataColumn DataMemberBinding="{Binding Occured, Mode=OneWay}" Header="Occured" CellStyleSelector="{StaticResource ColorSelector}"/> <t:GridViewDataColumn DataMemberBinding="{Binding System,Mode=OneWay}" Header="System" CellStyle="{StaticResource PaddedCell}" /> <t:GridViewDataColumn DataMemberBinding="{Binding Mode,Mode=OneWay}" Header="Mode" CellStyle="{StaticResource PaddedCell}" /> <t:GridViewDataColumn DataMemberBinding="{Binding CallingClass,Mode=OneWay}" Header="Calling Class" CellStyle="{StaticResource PaddedCell}" /> <t:GridViewDataColumn DataMemberBinding="{Binding Message,Mode=OneWay}" Header="Message" CellStyle="{StaticResource PaddedCell}" /> <t:GridViewDataColumn DataMemberBinding="{Binding Exception,Mode=OneWay}" Header="Exception" CellStyle="{StaticResource PaddedCell}" /> </t:RadGridView.Columns> </telerik:RadGridView>
I have above data-bound RadGridView (named Logs) and I am trying to export its contents, but it always results into an empty exported file.
And I try to export the contents of RadGridView with below code:
private void ExportLogs(){ using (var stream = File.Create(filepath)) { Logs.Export(stream, new GridViewExportOptions() { Format = ExportFormat.ExcelML, ShowColumnHeaders = true, ShowColumnFooters = false, ShowGroupFooters = false, }); } }Any help would be appreciated. Thank you.
1 answer
207 views
Hello
Why this doesn't work?
It causes the following exception:
An unhandled exception of type 'System.NullReferenceException' occurred in Telerik.Windows.Controls.FixedDocumentViewers.dll
em Telerik.Windows.Controls.FixedDocumentViewerBase.AttachToDocumentEvents(RadFixedDocument document)em Telerik.Windows.Controls.FixedDocumentViewerBase.OnDocumentChanged(RadFixedDocument oldValue, RadFixedDocument newValue)em Telerik.Windows.Controls.FixedDocumentViewerBase.<.cctor>b__1(DependencyObject s, DependencyPropertyChangedEventArgs e)em System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e)em System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)em System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)
Tanya
Telerik team
answered
on
10 Mar 2016
3 answers
118 views
I Would like to bind title/header beginning of each line of chart from data source.I already binded with required display with legend and it is working fine but i need help to display at beginging of each line series.Please help it..please refer image...
<telerik:RadCartesianChart.SeriesProvider>
<telerik:ChartSeriesProvider Source="{Binding Data}">
<telerik:ChartSeriesProvider.SeriesDescriptors>
<telerik:CategoricalSeriesDescriptor ItemsSourcePath="LineData" ValuePath="Value" CategoryPath="Vector" >
<telerik:CategoricalSeriesDescriptor.Style>
<Style TargetType="telerik:StepLineSeries">
<Setter Property="StrokeThickness" Value="2"/>
<Setter Property="ShowLabels" Value="False"/>
<Setter Property="PointTemplate" Value="{StaticResource LinePointTemplate}"/>
<Setter Property="LegendSettings">
<Setter.Value>
<telerik:SeriesLegendSettings x:Name="l" Title="{Binding Name}"/>
</Setter.Value>
</Setter>
<Setter Property="VerticalAxis">
<Setter.Value>
<telerik:LinearAxis Title="{Binding Name}" LabelTemplate="{StaticResource YLabelTemplate}"
/>
</Setter.Value>
</Setter>
</Style>
</telerik:CategoricalSeriesDescriptor.Style>
</telerik:CategoricalSeriesDescriptor>
</telerik:ChartSeriesProvider.SeriesDescriptors>
</telerik:ChartSeriesProvider>
</telerik:RadCartesianChart.SeriesProvider>
VM .. { ..public ObservableCollection<Item> Data { get; set; } Data.Add(new WaveFormItem() { Name = "105.1", LineData = new ObservableCollection<LineDataModel>() { new WaveFormLineData() { Vector = 0, Value = 1.0 }, new WaveFormLineData() { Vector = 1, Value = 1.1 } } });} public class LineDataModel { public int Vector { get; set; } public double Value { get; set; } } public class Item { public string Name { get; set; } public ObservableCollection<LineDataModel> LineData { get; set; } }
Petar Marchev
Telerik team
answered
on
10 Mar 2016
6 answers
574 views
I'm working on a chart that had a bunch of series as bars. I'm wanting to change one from a bar to a bubble series and when the chart goes to display I get an error in Telerik code with the exception: "Width and Height must be non-negative".
The stack trace is in the attached PNG file ("Tracker" is my app).
Martin Ivanov
Telerik team
answered
on
10 Mar 2016
2 answers
93 views
Hello,
if i bind a DataTable to a RadGridView.ItemsSource and try to search with SearchPanel, i'm getting a System.ArgumentException error.
Column 'xy' does not belong to table xy.
Can you help me please? Thanks.
<telerik:RadGridView ItemsSource="{Binding Table}" ShowSearchPanel="True"/>
private DataTable _table;public DataTable Table{ get { return _table; } set { if (Equals(value, _table)) return; _table = value; OnPropertyChanged(nameof(Table)); }}public ViewModel(){ Table = new DataTable("Test"); Table.Columns.Add("Spalte 1"); Table.Columns.Add("Spalte 2"); Table.Columns.Add("Spalte 3"); for (var i = 0; i < 50; i++) { var row = Table.NewRow(); row.ItemArray = new object[] { "Cell 1 " + i, "Cell 2 " + i, "Cell 3 " + i }; Table.Rows.Add(row); }}3 answers
142 views
I've got a RadCollectionNavigator with Source bound to an ObservableCollection<int> in the VM and CurrentItem two-way bound to an int in the VM. When I call ObservableCollection<int>.Remove I'm expecting the RadCollectionNavigator to update and change CurrentItem, but this isn't happening. Is this something it can do or do I have to implement an update to the CurrentItem binding myself in the VM?
Yoan
Telerik team
answered
on
10 Mar 2016
2 answers
288 views
Hi Telerik,
I'm having this strange phenomenon where my RadCartesianChart shows my annotations when I create the control directly on the grid of the usercontrol, but not when I try to access it in a datatemplate. The annotations are added to the chart in code behind. In both cases, the code is executed, but I don't see them when using the datatemplate. The lineseries themselves are shown in both cases.
This is the XAML for the chart in the datatemplate:
<DataTemplate DataType="{x:Type entities:ChartMeasurement}">
<Grid>
<telerik:RadCartesianChart Grid.Row="0" HorizontalAlignment="Stretch" Margin="240,15,0,39" Name="radCartesianChart">
<telerik:RadCartesianChart.Resources>
<DataTemplate x:Key="PointTemplate">
<Ellipse Height="8" Width="8" Stroke="White" StrokeThickness="1" Fill="#1B9DDE" />
</DataTemplate>
<Style x:Key="BorderStyle" TargetType="Border">
<Setter Property="Background" Value="#1B9DDE" />
</Style>
</telerik:RadCartesianChart.Resources>
<telerik:RadCartesianChart.HorizontalAxis>
<telerik:DateTimeContinuousAxis MajorStep="{Binding MyViewModel.MajorStep}"
MajorStepUnit="{Binding MyViewModel.MajorStepUnit}"
PlotMode="OnTicksPadded"
LabelTemplate="{StaticResource HorizontalAxisLabelTemplate}"
LabelRotationAngle="-90"
LabelFitMode="Rotate"
LineThickness="2"
LineStroke="Gray"/>
</telerik:RadCartesianChart.HorizontalAxis>
<telerik:RadCartesianChart.VerticalAxis>
<telerik:LinearAxis Visibility="Hidden"/>
</telerik:RadCartesianChart.VerticalAxis>
<telerik:RadCartesianChart.SeriesProvider>
<telerik:ChartSeriesProvider x:Name="myChartSeriesProvider" Source="{Binding MyViewModel.ChartData.MeasurementList}">
<telerik:ChartSeriesProvider.SeriesDescriptors>
<telerik:CategoricalSeriesDescriptor ItemsSourcePath="RawDataList" ValuePath="Value" CategoryPath="Time_Local">
<telerik:CategoricalSeriesDescriptor.Style>
<Style TargetType="telerik:LineSeries">
<Setter Property="StrokeThickness" Value="2"/>
<Setter Property="Stroke" Value="{Binding GraphColorBrush}"/>
<Setter Property="VerticalAxis" Value="{Binding VerticalAxis}"/>
<Setter Property="LegendSettings" Value="{Binding Measurement.Name, Converter={StaticResource LegendSettings}}"/>
</Style>
</telerik:CategoricalSeriesDescriptor.Style>
</telerik:CategoricalSeriesDescriptor>
</telerik:ChartSeriesProvider.SeriesDescriptors>
</telerik:ChartSeriesProvider>
</telerik:RadCartesianChart.SeriesProvider>
<telerik:RadCartesianChart.Grid>
<telerik:CartesianChartGrid MajorXLinesRenderMode="All" MajorLinesVisibility="XY"/>
</telerik:RadCartesianChart.Grid>
</telerik:RadCartesianChart>
<telerik:RadLegend Items="{Binding LegendItems, ElementName=radCartesianChart}"
FontFamily="Segoe UI"
Grid.Row="0"
Margin="2 52 30 20"/>
</Grid>
</DataTemplate>
As you can see, it is a quite complex graph with a dynamic number of series and 2 vertical axises, where I wan't to combine a number of series on the left vertical axis, and a number of series on the right vertical axis
This is the ChartMeasurement class used in the datatemplate:
public class ChartMeasurement : Measurement
{
private ReportingViewModel _reportingViewModel;
public ChartMeasurement(ReportingViewModel reportingViewModel)
{
_reportingViewModel = reportingViewModel;
MeasurementSignal = new Signal { Name = "Graph" };
}
public ReportingViewModel MyViewModel
{
get { return _reportingViewModel; }
}
}
In code behind, I to the following:
private void RadComboBoxMeasurementPoints_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
var reportingView = DataContext as ReportingViewModel;
var measurementPoint = e.AddedItems[0] as MeasurementPoint;
var dataTemplateKey = new DataTemplateKey(typeof(ChartMeasurement));
var dataTemplate = FindResource(dataTemplateKey) as DataTemplate;
if (dataTemplate == null)
{
return;
}
var radCartesianChart = ((Grid)dataTemplate.LoadContent()).Children[0] as RadCartesianChart;
if (reportingView != null &&
measurementPoint != null &&
radCartesianChart != null)
{
radCartesianChart.Annotations.Clear();
var axisLeft = new LinearAxis
{
Title = "",
Minimum = 0,
Maximum = measurementPoint.ScaleLeft,
HorizontalLocation = AxisHorizontalLocation.Left,
TickThickness = 1,
MajorTickLength = 2,
LineThickness = 2,
MajorStep = measurementPoint.ScaleLeft / 10
};
var axisRight = new LinearAxis
{
Title = "",
Minimum = 0,
Maximum = measurementPoint.ScaleRight,
HorizontalLocation = AxisHorizontalLocation.Right,
TickThickness = 1,
MajorTickLength = 2,
LineThickness = 2,
MajorStep = measurementPoint.ScaleRight / 10
};
if (reportingView.ReportData == null)
{
return;
}
var stringLeft = new List<String>();
var stringRight = new List<String>();
foreach (var measurement in reportingView.ReportData.Measurements.Where(m => m.Measurement.MeasurementPoint.Equals(e.AddedItems[0])))
{
if (!measurement.Measurement.HasAxisLeft)
{
measurement.VerticalAxis = axisRight;
stringRight.Add(measurement.Measurement.Name);
if (measurement.Measurement.HasBoundaryValue)
{
radCartesianChart.Annotations.Add(new CartesianGridLineAnnotation
{
Value = measurement.Measurement.BoundaryValue,
Stroke = measurement.GraphColorBrush,
Axis = axisRight,
Label = measurement.Measurement.Name
});
}
}
else
{
measurement.VerticalAxis = axisLeft;
stringLeft.Add(measurement.Measurement.Name);
if (measurement.Measurement.HasBoundaryValue)
{
radCartesianChart.Annotations.Add(new CartesianGridLineAnnotation
{
Value = measurement.Measurement.BoundaryValue,
Stroke = measurement.GraphColorBrush,
Axis = axisLeft,
Label = measurement.Measurement.Name
});
}
}
}
axisRight.Title = String.Join(", ", stringRight);
axisLeft.Title = String.Join(", ", stringLeft);
}
}
This code is executed each time another measurementpoint is selected, but I never see the annotations. The lineseries are shown as expected.
When I omit the datatemplate, and show the chart directly in the grid, it works just fine.
This is the XAML:
<telerik:RadCartesianChart Grid.Row="1" HorizontalAlignment="Stretch" Margin="240,15,0,39" Name="radCartesianChart">
<telerik:RadCartesianChart.Resources>
<DataTemplate x:Key="PointTemplate">
<Ellipse Height="8" Width="8" Stroke="White" StrokeThickness="1" Fill="#1B9DDE" />
</DataTemplate>
<Style x:Key="BorderStyle" TargetType="Border">
<Setter Property="Background" Value="#1B9DDE" />
</Style>
</telerik:RadCartesianChart.Resources>
<telerik:RadCartesianChart.HorizontalAxis>
<telerik:DateTimeContinuousAxis MajorStep="{Binding MajorStep}"
MajorStepUnit="{Binding MajorStepUnit}"
PlotMode="OnTicksPadded"
LabelTemplate="{StaticResource HorizontalAxisLabelTemplate}"
LabelRotationAngle="-90"
LabelFitMode="Rotate"
LineThickness="2"
LineStroke="Gray"/>
</telerik:RadCartesianChart.HorizontalAxis>
<telerik:RadCartesianChart.VerticalAxis>
<telerik:LinearAxis Visibility="Hidden"/>
</telerik:RadCartesianChart.VerticalAxis>
<telerik:RadCartesianChart.SeriesProvider>
<telerik:ChartSeriesProvider Source="{Binding ChartData.MeasurementList, Mode=TwoWay}">
<telerik:ChartSeriesProvider.SeriesDescriptors>
<telerik:CategoricalSeriesDescriptor ItemsSourcePath="RawDataList" ValuePath="Value" CategoryPath="Time_Local">
<telerik:CategoricalSeriesDescriptor.Style>
<Style TargetType="telerik:LineSeries">
<Setter Property="StrokeThickness" Value="2"/>
<Setter Property="Stroke" Value="{Binding GraphColorBrush}"/>
<Setter Property="VerticalAxis" Value="{Binding VerticalAxis}"/>
<Setter Property="LegendSettings" Value="{Binding Measurement.Name, Converter={StaticResource LegendSettings}}"/>
</Style>
</telerik:CategoricalSeriesDescriptor.Style>
</telerik:CategoricalSeriesDescriptor>
</telerik:ChartSeriesProvider.SeriesDescriptors>
</telerik:ChartSeriesProvider>
</telerik:RadCartesianChart.SeriesProvider>
<telerik:RadCartesianChart.Grid>
<telerik:CartesianChartGrid MajorXLinesRenderMode="All" MajorLinesVisibility="XY"/>
</telerik:RadCartesianChart.Grid>
</telerik:RadCartesianChart>
<telerik:RadLegend Items="{Binding LegendItems, ElementName=radCartesianChart}"
Name="radLegend"
FontFamily="Segoe UI"
Grid.Row="1"
Margin="2 52 30 20"/>
And the code behind:
private void RadComboBoxMeasurementPoints_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
var reportingView = DataContext as ReportingViewModel;
var measurementPoint = e.AddedItems[0] as MeasurementPoint;
if (reportingView != null &&
measurementPoint != null &&
radCartesianChart != null)
{
radCartesianChart.Annotations.Clear();
var axisLeft = new LinearAxis
{
Title = "",
Minimum = 0,
Maximum = measurementPoint.ScaleLeft,
HorizontalLocation = AxisHorizontalLocation.Left,
TickThickness = 1,
MajorTickLength = 2,
LineThickness = 2,
MajorStep = measurementPoint.ScaleLeft / 10
};
var axisRight = new LinearAxis
{
Title = "",
Minimum = 0,
Maximum = measurementPoint.ScaleRight,
HorizontalLocation = AxisHorizontalLocation.Right,
TickThickness = 1,
MajorTickLength = 2,
LineThickness = 2,
MajorStep = measurementPoint.ScaleRight / 10
};
if (reportingView.ReportData == null)
{
return;
}
var stringLeft = new List<String>();
var stringRight = new List<String>();
foreach (var measurement in reportingView.ReportData.Measurements.Where(m => m.Measurement.MeasurementPoint.Equals(e.AddedItems[0])))
{
if (!measurement.Measurement.HasAxisLeft)
{
measurement.VerticalAxis = axisRight;
stringRight.Add(measurement.Measurement.Name);
if (measurement.Measurement.HasBoundaryValue)
{
radCartesianChart.Annotations.Add(new CartesianGridLineAnnotation
{
Value = measurement.Measurement.BoundaryValue,
Stroke = measurement.GraphColorBrush,
Axis = axisRight,
Label = measurement.Measurement.Name
});
}
}
else
{
measurement.VerticalAxis = axisLeft;
stringLeft.Add(measurement.Measurement.Name);
if (measurement.Measurement.HasBoundaryValue)
{
radCartesianChart.Annotations.Add(new CartesianGridLineAnnotation
{
Value = measurement.Measurement.BoundaryValue,
Stroke = measurement.GraphColorBrush,
Axis = axisLeft,
Label = measurement.Measurement.Name
});
}
}
}
axisRight.Title = String.Join(", ", stringRight);
axisLeft.Title = String.Join(", ", stringLeft);
dataTemplate.LoadContent();
}
}
As you can see, both code snippets are very alike.
What am I missing here or doing wrong?
The reason for using a datatemplate is that I want the chart to show up in a tab page of a dynamic tab control (dynamic number of tab pages).
Thanks in advance.
Hans.
