I have a 2-dimensional array of objects and I basically want to databind each one to a cell in a WPF grid. Currently I have this working but I am doing most of it procedurally. I create the correct number of row and column definitions, then I loop through the cells and create the controls and set up the correct bindings for each one.
At a minimum I would like to be able to use a template to specify the controls and bindings in xaml. Ideally I would like to get rid of the procedural code and just do it all with databinding, but I'm not sure that's possible.
Here is the code I am currently using:
public void BindGrid() { m_Grid.Children.Clear(); m_Grid.ColumnDefinitions.Clear(); m_Grid.RowDefinitions.Clear(); for (int x = 0; x < MefGrid.Width; x++) { m_Grid.ColumnDefinitions.Add(new ColumnDefinition() { Width = new GridLength(1, GridUnitType.Star), }); } for (int y = 0; y < MefGrid.Height; y++) { m_Grid.RowDefinitions.Add(new RowDefinition() { Height = new GridLength(1, GridUnitType.Star), }); } for (int x = 0; x < MefGrid.Width; x++) { for (int y = 0; y < MefGrid.Height; y++) { Cell cell = (Cell)MefGrid[x, y]; SolidColorBrush brush = new SolidColorBrush(); var binding = new Binding("On"); binding.Converter = new BoolColorConverter(); binding.Mode = BindingMode.OneWay; BindingOperations.SetBinding(brush, SolidColorBrush.ColorProperty, binding); var rect = new Rectangle(); rect.DataContext = cell; rect.Fill = brush; rect.SetValue(Grid.RowProperty, y); rect.SetValue(Grid.ColumnProperty, x); m_Grid.Children.Add(rect); } } }
RowDefinitions. Add(gridRow3); Once rows and columns are added to Grid, you can add any contents to Grid cells by using SetRow and SetColumn methods. SetRow and SetColumn methods take first parameter as the control name and second parameter as row number and column number respectively.
A Grid is a control for laying out other controls on the form (or page). A DataGrid is a control for displaying tabular data as read from a database for example.
The purpose of the Grid is not for real databinding, it is just a panel. I am listing down the easiest way to accomplish the visualization of a two dimensional list
<Window.Resources> <DataTemplate x:Key="DataTemplate_Level2"> <Button Content="{Binding}" Height="40" Width="50" Margin="4,4,4,4"/> </DataTemplate> <DataTemplate x:Key="DataTemplate_Level1"> <ItemsControl ItemsSource="{Binding}" ItemTemplate="{DynamicResource DataTemplate_Level2}"> <ItemsControl.ItemsPanel> <ItemsPanelTemplate> <StackPanel Orientation="Horizontal"/> </ItemsPanelTemplate> </ItemsControl.ItemsPanel> </ItemsControl> </DataTemplate> </Window.Resources> <Grid> <ItemsControl x:Name="lst" ItemTemplate="{DynamicResource DataTemplate_Level1}"/> </Grid>
And in the code behind set the ItemsSource of lst with a TwoDimentional data structure.
public Window1() { List<List<int>> lsts = new List<List<int>>(); for (int i = 0; i < 5; i++) { lsts.Add(new List<int>()); for (int j = 0; j < 5; j++) { lsts[i].Add(i * 10 + j); } } InitializeComponent(); lst.ItemsSource = lsts; }
This gives you the following screen as output. You can edit the DataTemplate_Level2 to add more specific data of your object.
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