binding – Page 13 – Tarik Billa

How To Raise Property Changed events on a Dependency Property?

February 14, 2023 by Tarik

I ran into a similar problem where I have a dependency property that I wanted the class to listen to change events to grab related data from a service. public static readonly DependencyProperty CustomerProperty = DependencyProperty.Register(“Customer”, typeof(Customer), typeof(CustomerDetailView), new PropertyMetadata(OnCustomerChangedCallBack)); public Customer Customer { get { return (Customer)GetValue(CustomerProperty); } set { SetValue(CustomerProperty, value); } } … Read more

Simple WPF RadioButton Binding?

February 13, 2023 by Tarik

I came up with a simple solution. I have a model.cs class with: private int _isSuccess; public int IsSuccess { get { return _isSuccess; } set { _isSuccess = value; } } I have Window1.xaml.cs file with DataContext set to model.cs. The xaml contains the radiobuttons: <RadioButton IsChecked=”{Binding Path=IsSuccess, Converter={StaticResource radioBoolToIntConverter}, ConverterParameter=1}” Content=”one” /> <RadioButton … Read more

How does the ‘binding’ attribute work in JSF? When and how should it be used?

February 6, 2023 by Tarik

How does it work? When a JSF view (Facelets/JSP file) get built/restored, a JSF component tree will be produced. At that moment, the view build time, all binding attributes are evaluated (along with id attribtues and taghandlers like JSTL). When the JSF component needs to be created before being added to the component tree, JSF … Read more

Bind to a value defined in the Settings

February 1, 2023 by Tarik

First, you need to add a custom XML namespace that will design the namespace where the settings are defined: xmlns:properties=”clr-namespace:TestSettings.Properties” Then, in your XAML file, access the default settings instance using the following syntax: {x:Static properties:Settings.Default} So here is the final result code: <ListBox x:Name=”lb” ItemsSource=”{Binding Source={x:Static properties:Settings.Default}, Path=Names}” /> Source: WPF – How to … Read more

How to bind a List to a DataGridView control?

January 25, 2023 by Tarik

Try this: IList<String> list_string= new List<String>(); DataGridView.DataSource = list_string.Select(x => new { Value = x }).ToList(); dgvSelectedNode.Show();

Early and late binding

January 24, 2023 by Tarik

Everything is early bound in C# unless you go through the Reflection interface. Early bound just means the target method is found at compile time, and code is created that will call this. Whether its virtual or not (meaning there’s an extra step to find it at call time is irrelevant). If the method doesn’t … Read more

WPF StringFormat on Label Content

January 22, 2023 by Tarik

The reason this doesn’t work is that the Label.Content property is of type Object, and Binding.StringFormat is only used when binding to a property of type String. What is happening is: The Binding is boxing your MaxLevelOfInvestment value and storing it the Label.Content property as a boxed decimal value. The Label control has a template … Read more

Binding ItemsSource of a ComboBoxColumn in WPF DataGrid

January 22, 2023 by Tarik

Pls, check if DataGridComboBoxColumn xaml below would work for you: <DataGridComboBoxColumn SelectedValueBinding=”{Binding CompanyID}” DisplayMemberPath=”Name” SelectedValuePath=”ID”> <DataGridComboBoxColumn.ElementStyle> <Style TargetType=”{x:Type ComboBox}”> <Setter Property=”ItemsSource” Value=”{Binding Path=DataContext.CompanyItems, RelativeSource={RelativeSource AncestorType={x:Type Window}}}” /> </Style> </DataGridComboBoxColumn.ElementStyle> <DataGridComboBoxColumn.EditingElementStyle> <Style TargetType=”{x:Type ComboBox}”> <Setter Property=”ItemsSource” Value=”{Binding Path=DataContext.CompanyItems, RelativeSource={RelativeSource AncestorType={x:Type Window}}}” /> </Style> </DataGridComboBoxColumn.EditingElementStyle> </DataGridComboBoxColumn> Here you can find another solution for the problem you’re facing: … Read more

WPF binding with StringFormat doesn’t work on ToolTips

January 21, 2023 by Tarik

ToolTips in WPF can contain anything, not just text, so they provide a ContentStringFormat property for the times you just want text. You’ll need to use the expanded syntax as far as I know: <TextBox …> <TextBox.ToolTip> <ToolTip Content=”{Binding ElementName=myTextBlock,Path=Text}” ContentStringFormat=”{}It is: {0}” /> </TextBox.ToolTip> </TextBox> I’m not 100% sure about the validity of binding … Read more

Binding objects defined in code-behind

January 19, 2023 by Tarik

There’s a much easier way of doing this. You can assign a Name to your Window or UserControl, and then binding by ElementName. Window1.xaml <Window x:Class=”QuizBee.Host.Window1″ x:Name=”Window1″ xmlns=”http://schemas.microsoft.com/winfx/2006/xaml/presentation” xmlns:x=”http://schemas.microsoft.com/winfx/2006/xaml”> <ListView ItemsSource=”{Binding ElementName=Window1, Path=myDictionary}” /> </Window> Window1.xaml.cs public partial class Window1:Window { // the property must be public, and it must have a getter & setter … Read more