Binding a XAML control visibility to a ViewModel variable in WPF

Some instructions on how to bind the visibility of a XAML button control to a boolean value in a ViewModel class. 1. Create a new WPF application visibility 2. Add the View Model class Right click your project folder and select Add > New Item > Class. Name your class MainWindowViewModel.cs: visibility1 In your ViewModel class include the property to get the visibility setting. For reasons of simplicity this simply returns a value of true for now, but in your own implementations, feel free to make the getters and setters do what you like. [code language="csharp"] using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace Visibility { public class MainWindowViewModel { public bool ButtonVisibility { get { return true; } } } } [/code] 3. Update your MainWindow.xaml code to do the following: - add a button - set the DataContext property - declare and use a BooleanToVisibilityConverter [code language="xml"] <Window x:Class="Visibility.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d" xmlns:local="clr-namespace:Visibility" Title="MainWindow" Height="150" Width="225"> <Window.DataContext> <local:MainWindowViewModel /> </Window.DataContext> <Window.Resources> <BooleanToVisibilityConverter x:Key="BooleanToVisibilityConverter" /> </Window.Resources> <Grid> <Button Content="Button" Visibility="{Binding Path=ButtonVisibility, Converter={StaticResource BooleanToVisibilityConverter} }" HorizontalAlignment="Center" VerticalAlignment="Center" Margin="10,10,0,0" Width="75"> </Button> </Grid> </Window> [/code] 4. Run the example. With the ButtonVisibility property set to return true the XAML button control is made visible when running the program as follows: visibility2 And when the ButtonVisibility property is set to false: [code language="csharp"] public class MainWindowViewModel { public bool ButtonVisibility { get { return false; } } } [/code] .. the button becomes hidden as shown: visibility3

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