can someone give the C# equivalent of this xamle code?
<ListBox Width="400" Margin="10"
ItemsSource="{Binding Source={StaticResource myTodoList}}">
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel>
<TextBlock Text="{Binding Path=TaskName}" />
<TextBlock Text="{Binding Path=Description}"/>
<TextBlock Text="{Binding Path=Priority}"/>
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
That's because I would like to know how to dynamically add PivotItems into a Pivot, for a windows phone 7 app, with the default Pivot layout generate in VS 2010. For instance, I got this code, but I didn't find a way to add the StackPanel object sp, to ListBox:
// epgXml is an XElement object, wich has channel and programmes tags
// it's an app about a tv guide, where the user clicks on a channel and gets a list of programmes for that channe.
// in th xaml code, I have a grid with a pivot object in it:
<Grid x:Name="LayoutRoot" Background="Transparent">
<controls:Pivot x:Name="MainPivot" ItemsSource="{Binding PivotItems}" Title="ZON EPG">
</controls:Pivot>
</Grid>
// In MainViewModel.cs I have this code:
public void client_GetEPGCompleted(Object sender, GetEPGCompletedEventArgs e)
{
DataTemplate dt = new DataTemplate();
epgXml = e.Result.Output.EPGXml;
if (epgXml != null)
{
//Channels = new List<string>();
// parse the xml and show channels and programmes
var channels = from c in epgXml.Elements("channel")
select c;
foreach (XElement el in channels)
{
PivotItem pi = new PivotItem();
pi.Header = el.Elements("display-name").FirstOrDefault().Value;
ListBox lb = new ListBox();
lb.Margin = new Thickness(0, 0, -12, 0);
//ItemsControl ic = new ItemsControl();
//ic.ItemTemplate = dt;
lb.ItemTemplate = dt;
StackPanel sp = new StackPanel();
sp.Margin = new Thickness(0, 0, 0, 17);
sp.Width = 432;
TextBlock tb = new TextBlock();
Binding binding = new Binding("ProgTitle");
binding.Mode = BindingMode.TwoWay;
tb.SetBinding(TextBlock.TextProperty, binding);
tb.Margin = new Thickness(12, 0, 0, 0);
tb.TextWrapping = TextWrapping.NoWrap;
tb.Style = Application.Current.Resources["PhoneTextExtraLargeStyle"] as Style;
sp.Children.Add(tb);
tb = new TextBlock();
binding = new Binding("ProgStart");
binding.Mode = BindingMode.TwoWay;
tb.SetBinding(TextBlock.TextProperty, binding);
tb.Margin = new Thickness(12, -6, 0, 0);
tb.TextWrapping = TextWrapping.NoWrap;
tb.Style = Application.Current.Resources["PhoneTextSubtleStyle"] as Style;
sp.Children.Add(tb);
tb = new TextBlock();
binding = new Binding("Duration");
binding.Mode = BindingMode.TwoWay;
tb.SetBinding(TextBlock.TextProperty, binding);
tb.Margin = new Thickness(12, 0, 0, 0);
tb.TextWrapping = TextWrapping.NoWrap;
tb.Style = Application.Current.Resources["PhoneTextSubtleStyle"] as Style;
sp.Children.Add(tb);
// get programmes foreach channel
var progrs = from p in epgXml.Elements("programme")
where p.Attributes("channel").FirstOrDefault().Value == el.Attributes("id").FirstOrDefault().Value
select new ItemViewModel()
{
ProgTitle = p.Elements("title").FirstOrDefault().Value,
ProgStart = p.Attributes("start").FirstOrDefault().Value,
Duration = p.Elements("length").FirstOrDefault().Value
};
foreach (ItemViewModel item in progrs)
{
this.Items.Add(item);
}
// create new instance - this holds all the programms for each channel
this.Items = new ObservableCollection<ItemViewModel>();
PivotItems.Add(pi);
}
Thx in advance
You have to use XamlReader to create datatemplates (as in your XAML) on the phone.
See a full example and explanation at http://www.windowsphonegeek.com/tips/wp7-dynamically-generating-datatemplate-in-code
For an example off dynamically adding PivotItems seee How to dynamically add pivot item and add Image to each pivot item?
Related
I have an application that allows multiple selection of items in the UI with checkboxes. The thing is checkboxes are generated from a file because the company adds or removes selections from the search.
Since I read a file to get all the possible selections available, the checkbox is generated in C# code, not XAML and one requirement for the UI is to have rounded checkboxes. How can I achieve this in C#?
I did this in XAML:
<CheckBox Content="QA Standard" IsEnabled="{Binding CanEdit, UpdateSourceTrigger=PropertyChanged}"
ToolTip="{Binding StatusInfo, UpdateSourceTrigger=PropertyChanged}"
BorderBrush="{Binding StatusColor, UpdateSourceTrigger=PropertyChanged}"
BorderThickness="2"
Margin="5" >
<CheckBox.Resources>
<Style TargetType="{x:Type Border}">
<Setter Property="CornerRadius" Value="12" />
</Style>
</CheckBox.Resources>
Tried to redo it in C# but doesn't seems to work:
CheckBox c = new CheckBox() { BorderThickness = new Thickness(2), Content = b, Margin = new Thickness(5) };
var enabled = new Binding() { Source = DataContext, Path = new PropertyPath("CanEdit"), Mode = BindingMode.TwoWay, UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged };
var tooltip = new Binding() { Source = DataContext, Path = new PropertyPath("StatusInfo"), Mode = BindingMode.TwoWay, UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged };
var border = new Binding() { Source = DataContext, Path = new PropertyPath("StatusColor"), Mode = BindingMode.TwoWay, UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged };
BindingOperations.SetBinding( c, CheckBox.IsEnabledProperty, enabled );
BindingOperations.SetBinding( c, CheckBox.ToolTipProperty, tooltip );
BindingOperations.SetBinding( c, CheckBox.BorderBrushProperty, border );
var cStyle = new Style( typeof(Border) );
cStyle.Setters.Add( new Setter( Border.CornerRadiusProperty, new CornerRadius( 12.0 ) ) );
c.Resources.Add( "CornerRadiusBorder", cStyle );
Boxes.Children.Add( c );
Just change the key of the resource:
var cStyle = new Style(typeof(Border));
cStyle.Setters.Add(new Setter(Border.CornerRadiusProperty, new CornerRadius(12.0)));
c.Resources.Add(typeof(Border), cStyle);
I'm working on a cookbook for myself, written in WPF/C#.
Additionally I'm new to Data Bindings.
My Problem is, I want to generate a Datagrid in a TabItem on runtime in code behind, including Bindings. I can't set a Datagrid at XAML because I want to create all TabItems dynamically.
Following Code so far:
XAML:
<UniformGrid Columns="2" Rows="1">
<TabControl Name="TabControl" TabStripPlacement="Left"/>
<TabItem Header= "first dish" Name = "firstdish"/>
</UniformGrid>
XAML.cs for generation:
//New Grid
var Grid = new DataGrid();
//Start Test list creation with three items
var TestList = new List<Receipt>();
//Set binding
Grid.ItemsSource = TestList;
var Rec = new Receipt();
Rec.Creator = "DaJohn1";
Rec.ID = 1;
Rec.Title = "TestReceipt1";
var Rec2 = new Receipt();
Rec2.Creator = "DaJohn2";
Rec2.ID = 2;
Rec2.Title = "TestReceipt2";
var Rec3 = new Receipt();
Rec3.Creator = "DaJohn3";
Rec3.ID = 3;
Rec3.Title = "TestReceipt3";
TestList.Add(Rec);
TestList.Add(Rec2);
TestList.Add(Rec3);
//End Test list creation
//Add Column
var SingleColumn = new DataGridTextColumn();
Grid.Columns.Add(SingleColumn);
SingleColumn.Binding = new Binding("Creator");
SingleColumn.Header = "Creator";
//Add Column
var SingleColumn2 = new DataGridTextColumn();
Grid.Columns.Add(SingleColumn2);
SingleColumn2.Binding = new Binding("Title");
SingleColumn2.Header = "Title";
//Set tabitem content to datagrid
firstdish.Content = Grid;
All I'm getting is an datagrid with four rows (looks like the count of Items is right), which are all empty, no data to be seen.
I'm staring at this since last Weeks Monday and can't find an answer anywhere.
Thanks for any ideas and solutions.
try changing
var TestList = new List<Receipt>();
to
var TestList = new ObservableCollection<Receipt>();
as it automatically notifies UI about changes.
I had a similar problem with items not rendering so this may be it.
I've taken your code and checked some of the things you do: The main error is that in your xaml code you created the Tab Control and then Put the TabItem outside it, Tabitem must be inside the control for it to work correctly. so First error is:
<TabControl Name="TabControl" TabStripPlacement="Left">
<TabItem Header="First dish" Name = "firstdish" />
</TbControl>
Other things you need to do before going on in my opinion are:
Assign your window or other UI element itself as datacontext
Verify that your Receipt class implements the INotifyPropertyChanged event that has to be raised by all its properties, or implement your properties as DependencyProperties (even if the latter is not necessary)
Transform your datasource TestList in an ObservableCollection
Create TestList as a class property not a local variable so that it is into the datacontext
I've made a small sample using the above indication and your code to let you see better how that works. You can download the zip here:
TestClassDataGrid.zip
Below code should work for you,
XAML:
<TabControl Name="TabControl" TabStripPlacement="Left">
<TabItem Header= "first dish" Name = "firstdish"/>
</TabControl>
.cs file
public Window()
{
InitializeComponent();
var Grid = new DataGrid();
//Start Test list creation with three items
var TestList = new List<Receipt>();
//Set binding
Grid.ItemsSource = TestList;
var Rec = new Receipt();
Rec.Creator = "DaJohn1";
Rec.ID = 1;
Rec.Title = "TestReceipt1";
var Rec2 = new Receipt();
Rec2.Creator = "DaJohn2";
Rec2.ID = 2;
Rec2.Title = "TestReceipt2";
var Rec3 = new Receipt();
Rec3.Creator = "DaJohn3";
Rec3.ID = 3;
Rec3.Title = "TestReceipt3";
TestList.Add(Rec);
TestList.Add(Rec2);
TestList.Add(Rec3);
//End Test list creation
//Add Column
var SingleColumn = new DataGridTextColumn();
Grid.Columns.Add(SingleColumn);
SingleColumn.Binding = new Binding("Creator");
SingleColumn.Header = "Creator";
//Add Column
var SingleColumn2 = new DataGridTextColumn();
Grid.Columns.Add(SingleColumn2);
SingleColumn2.Binding = new Binding("Title");
SingleColumn2.Header = "Title";
//Set tabitem content to datagrid
Grid.AutoGenerateColumns = false;
firstdish.Content = Grid;
}
In code i add columns to listview successfuly. But i want add binding to column than add to listview.
fist is working code in xaml.
<GridViewColumn x:Name="colName" Header="Name" Width="130">
<GridViewColumn.CellTemplate>
<DataTemplate>
<TextBlock Text="{Binding Path=Values, Converter={StaticResource LoadProfileConverter},ConverterParameter=active_total}"/>
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
Code behind:
GridViewColumn column = new GridViewColumn();
column.Header = "Header";
column.Width = 130;
FrameworkElementFactory controlFactory = new FrameworkElementFactory(typeof(TextBlock));
var itemsBinding = new System.Windows.Data.Binding("Values")
{
Converter = new LoadProfileConverter(),
ConverterParameter = "active_total",
};
controlFactory.SetBinding(TextBox.TextProperty, itemsBinding);
DataTemplate template = new DataTemplate();
template.VisualTree = controlFactory;
column.CellTemplate = template;
LoadProfileGrid.Columns.Add(column);
var itemsbinding = new Binding("Values")
{
Converter = new LoadProfileConverter(),
ConverterParameter = key
};
controllerFactory.SetBinding(TextBox.TextProperty, itemsbinding);
Create a proper binding using the code above.
Loads of extra properties on the binding object that can assist you.
GridViewColumn column = new GridViewColumn();
column.Header = key;
column.Width = 130;
FrameworkElementFactory controlFactory = new FrameworkElementFactory(typeof(TextBlock));
var itemsBinding = new System.Windows.Data.Binding("Values")
{
Converter = new LoadProfileConverter(),
ConverterParameter = key
};
column.DisplayMemberBinding = itemsBinding;
LoadProfileGrid.Columns.Add(column);
I am trying to create a generic view, and I want it to contain a ListBox with a datatemplate
I want to create it either using pure C# code or if possible load it through xaml? If I can create a template I can get in c# as a resource of sorts.
What I have made until now is
private static ListBox CreateDayListBox()
{
var listBox = new ListBox();
var dataTemplate = new DataTemplate();
var grid = new Grid();
var columnDefinition1 = new ColumnDefinition {Width = GridLength.Auto};
var columnDefinition2 = new ColumnDefinition();
grid.ColumnDefinitions.Add(columnDefinition1);
grid.ColumnDefinitions.Add(columnDefinition2);
var rectangleItemBought = new Rectangle {Width = 50, Height = 50};
rectangleItemBought.SetBinding(Rectangle.FillProperty, new Binding("Bought"));
grid.Children.Add(rectangleItemBought);
var textBlockItemName = new TextBlock();
textBlockItemName.SetBinding(TextBlock.TextProperty, new Binding("Name"));
var textBlockItemQuantity = new TextBlock();
textBlockItemQuantity.SetBinding(TextBlock.TextProperty, new Binding("Quantity"));
var textBlockItemQuantityType = new TextBlock();
textBlockItemQuantityType.SetBinding(TextBlock.TextProperty, new Binding("QuantityType"));
var stackpanel = new StackPanel();
Grid.SetColumn(stackpanel, 1);
stackpanel.Children.Add(textBlockItemName);
stackpanel.Children.Add(textBlockItemQuantity);
stackpanel.Children.Add(textBlockItemQuantityType);
grid.Children.Add(stackpanel);
return listBox;
}
So I want the listbox datatemplate to contain 1 rectangle, 1 stackpanel with 3 textboxes inside
You can write the template in XAML then load it in your code.
Read this.
Besides, I'm pretty sure you can create the DataTemplate by code the same way you created the controls, look at this code (credit):
DataTemplate template = new DataTemplate();
FrameworkElementFactory factory =
new FrameworkElementFactory(typeof(StackPanel));
template.VisualTree = factory;
FrameworkElementFactory childFactory =
new FrameworkElementFactory(typeof(Image));
childFactory.SetBinding(Image.SourceProperty, new Binding("Machine.Thumbnail"));
childFactory.SetValue(Image.WidthProperty, 170.0);
childFactory.SetValue(Image.HeightProperty, 170.0);
factory.AppendChild(childFactory);
childFactory = new FrameworkElementFactory(typeof(Label));
childFactory.SetBinding(Label.ContentProperty,
new Binding("Machine.Descriiption"));
childFactory.SetValue(Label.WidthProperty, 170.0);
childFactory.SetValue(Label.HorizontalAlignmentProperty,
HorizontalAlignment.Center);
factory.AppendChild(childFactory);
I am trying to get a handle on an element within my DataTemplate in code. I am creating a series of DataGridTemplateColumns in code which I then assign to a grid.
I want to be able to retrieve the DataTemplate from the xaml, find my element and bind to that particular element.
Here is a short sample code what I am trying to achieve:
<DataTemplate x:Key="dataTemplate">
<Grid TextBlock.Foreground="LightGreen" Background="Yellow">
<TextBlock x:Name="txt" />
</Grid>
</DataTemplate>
DataGridTemplateColumn col = new DataGridTemplateColumn();
col.Header = "Last Name";
Binding b = new Binding("LastName");
DataTemplate dtemplate = (DataTemplate)FindResource("dataTemplate");
TextBlock textBlock = dtemplate.FindName("txt", this);
textBlock.SetBinding(TextBlock.TextProperty, b);
col.CellTemplate = dtemplate;
grid.Columns.Add(col);
Maybe to explain this further:
I am trying to create a set of DataGridTemplateColumns on the fly and apply that to a Datagrid. Since I don't know the property to bind to until the time a source gets presented to me I cannot create a DataTemplate that nested within itself has this binding already build in. Like:
<TextBlock Text={Binding=LastName} ... >
So I am forced to create a set of DataGridTemplateColumn in runtime, look for DataTemplate in my resources and THEN try to bind that column to a property (like LastName) on my datasource.
I would approach this via CellStyle instead:
<DataGrid.Resources>
<Style x:Key="CellStyle" TargetType="{x:Type DataGridCell}">
<Setter Property="TextBlock.Foreground" Value="LawnGreen"/>
<Setter Property="Background" Value="Yellow"/>
</Style>
</DataGrid.Resources>
DataGridTextColumn col = new DataGridTextColumn();
col.Binding = new Binding("Name");
col.CellStyle = dataGrid.Resources["CellStyle"] as Style;
dataGrid.Columns.Add(col);
There are also ways to do this via DataTemplates but it does not seem necessary in this case (unless your problem is more complex).
My solution to the problem is something like this:
GridView viewLayout = new GridView();
for (int i = 0; i < Apprefs.tables[0].Headers.Count(); i++)
{
GridViewColumn gvc = new GridViewColumn();
string colName = Apprefs.tables[0].Headers[i];
gvc.Header = colName;
gvc.Width = 80;
gvc.CellTemplate = SetTemplete(i); ;
viewLayout.Columns.Add(gvc);
}
listview1.View = viewLayout;
//set binding
listview1.ItemsSource = Apprefs.tables[0].Rows;
and then:
/// <summary>
/// Create DataTemplate
/// </summary>
/// <param name="i"></param>
/// <returns></returns>
private DataTemplate SetTemplete(int i)
{
DataTemplate template = new DataTemplate();
//set stack panel
FrameworkElementFactory sp = new FrameworkElementFactory(typeof(StackPanel));
sp.Name = "spBind";
sp.SetValue(StackPanel.OrientationProperty, Orientation.Horizontal);
//set textblock
FrameworkElementFactory tb = new FrameworkElementFactory(typeof(TextBlock));
sp.Name = "tbBind";
Binding b = new Binding();
string ito = "[" + i.ToString() + "]"; // bind by index
b.Path = new PropertyPath(ito);
tb.SetBinding(TextBlock.TextProperty, b);
sp.AppendChild(tb);
//set the visual tree of the data template
template.VisualTree = sp;
return template;
}