Hello,
I've attached the modified demo project for the SfSurfaceChart to illustrate my issue. Basically when setting the data after the chart control is loaded, the Plot is not updated. If I move the SetData() method into the constructor of the viewmodel, everything displays as expected. Am I missing something here?
Best,
Daniel
<Window x:Class="SurfaceChartDemo.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:Syncfusion="clr-namespace:Syncfusion.UI.Xaml.Charts;assembly=Syncfusion.SfChart.WPF"
xmlns:local="clr-namespace:SurfaceChartDemo"
WindowStartupLocation="CenterScreen" ResizeMode="CanResizeWithGrip"
DataContext="{Binding Main, Source={StaticResource Locator}}"
Title="Surface Chart">
<Grid>
<Grid.Resources>
<DataTemplate x:Key="LabelTemplate">
<TextBlock Text="{Binding LabelContent}" FontWeight="SemiBold" />
</DataTemplate>
<DataTemplate x:Key="HeaderTemplate">
<TextBlock Text="{Binding}" FontSize="14" FontWeight="Bold" />
</DataTemplate>
</Grid.Resources>
<Syncfusion:SfSurfaceChart Rotate="30" Tilt="20"
Type="Surface"
EnableRotation="True" ItemsSource="{Binding Points}" RowSize="{Binding RowSize}" ColumnSize="{Binding ColumnSize}"
XBindingPath="X" YBindingPath="Y" ZBindingPath="Z">
<Syncfusion:SfSurfaceChart.XAxis>
<Syncfusion:SurfaceAxis HeaderTemplate="{StaticResource HeaderTemplate}"
LabelTemplate="{StaticResource LabelTemplate}"
Header="X-Axis" />
</Syncfusion:SfSurfaceChart.XAxis>
<Syncfusion:SfSurfaceChart.YAxis>
<Syncfusion:SurfaceAxis HeaderTemplate="{StaticResource HeaderTemplate}"
LabelTemplate="{StaticResource LabelTemplate}" x:Name="Axis"
Header="Y-Axis" LabelFormat="0.0"/>
</Syncfusion:SfSurfaceChart.YAxis>
<Syncfusion:SfSurfaceChart.ZAxis>
<Syncfusion:SurfaceAxis HeaderTemplate="{StaticResource HeaderTemplate}"
LabelTemplate="{StaticResource LabelTemplate}"
Header="Z-Axis" />
</Syncfusion:SfSurfaceChart.ZAxis>
<Syncfusion:SfSurfaceChart.ColorBar>
<Syncfusion:ChartColorBar DockPosition="Right"/>
</Syncfusion:SfSurfaceChart.ColorBar>
</Syncfusion:SfSurfaceChart>
<Button Height="20" Width="100" HorizontalAlignment="Right" Content="Set Data" VerticalAlignment="Bottom" Command="{Binding ShowGraphCommand}"></Button>
</Grid>
</Window>
using GalaSoft.MvvmLight;
using System.Collections.ObjectModel;
using GalaSoft.MvvmLight.Threading;
using Prism.Commands;
namespace AreaSeriesDemo.ViewModel
{
public class Data
{
public double X { get; set; }
public double Y { get; set; }
public double Z { get; set; }
}
/// <summary>
/// This class contains properties that the main View can data bind to.
/// <para>
/// Use the <strong>mvvminpc</strong> snippet to add bindable properties to this ViewModel.
/// </para>
/// <para>
/// You can also use Blend to data bind with the tool's support.
/// </para>
/// <para>
/// See http://www.galasoft.ch/mvvm
/// </para>
/// </summary>
public class MainViewModel : ViewModelBase
{
/// <summary>
/// Initializes a new instance of the MainViewModel class.
/// </summary>
public MainViewModel()
{
////if (IsInDesignMode)
////{
//// // Code runs in Blend --> create design time data.
////}
////else
////{
//// // Code runs "for real"
////}
///
///
/// Works if called here.
//SetData();
}
private int _rowSize;
private int _columnSize;
private ObservableCollection<Data> _points;
public int RowSize
{
get => _rowSize;
set
{
_rowSize = value;
RaisePropertyChanged(nameof(RowSize));
}
}
public int ColumnSize
{
get => _columnSize;
set
{
_columnSize = value;
RaisePropertyChanged(nameof(ColumnSize));
}
}
public ObservableCollection<Data> Points
{
get => _points;
set
{
_points = value;
RaisePropertyChanged(nameof(Points));
}
}
private void SetData()
{
Points = new ObservableCollection<Data>();
double inc = 8.0 / 35;
int i = 0;
for (double x = -4; x < 4; x += inc, i++)
{
int j = 0;
for (double z = -4; z < 4; z += inc, j++)
{
double y = 2 * (x * x) + 2 * (z * z) - 4;
Points.Add(new Data() {X = x, Y = y, Z = z});
}
}
RowSize = 35;
ColumnSize = 35;
}
private DelegateCommand _showGraphCommand;
public DelegateCommand ShowGraphCommand =>
_showGraphCommand ?? (_showGraphCommand = new DelegateCommand(ExecuteShowGraphCommand));
public void ExecuteShowGraphCommand()
{
SetData();
}
}
}
Attachment:
CS_7a746f06.zip
