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This article introduces the knowledge of "WPF data-driven method to modify binding". Many people will encounter this dilemma in the operation of actual cases, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

I. brief introduction

We created a TextBlock and a Slider in the XAML file. 2 controls. We set the Text property of TextBlock (the property used to display text) to {Binding Intelligence}. Set the Value property of Slider (the current value of the slider) to {Binding Intelligence}.

Second, code case

XMAL:

Background logic:

Public partial class MainWindow: Window {Person p; public MainWindow () {InitializeComponent (); p = new Person (); Binding binding = new Binding (); binding.Source = p; binding.Mode = BindingMode.TwoWay; binding.Path = new PropertyPath ("Name"); BindingOperations.SetBinding (tb_inputName, TextBox.TextProperty, binding) This.DataContext = p;} private void AlertText_Click (object sender, RoutedEventArgs e) {p.Name = "after clicking the button >";}} public class Person: INotifyPropertyChanged {private double _ intelligence; public double Intelligence {get {return _ intelligence } set {_ intelligence = value; PropertyChanged?.Invoke (this, new PropertyChangedEventArgs ("Intelligence"));}} private string _ name; public string Name {get {return _ name;} set {_ name = value PropertyChanged?.Invoke (this, new PropertyChangedEventArgs ("Name"));}} public event PropertyChangedEventHandler PropertyChanged;} III. Running effect

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