Understanding Commands in WPF: A Cleaner Alternative to Button Click Events

Many WPF developers start by using Button Click events for handling user actions. At first, this seems simple and straightforward. But very soon, the code-behind file becomes huge , and maintaining it turns into a challenge. One big problem arises: when the logic changes, the button does not enable or disable automatically , and testing button click logic becomes very difficult. So the big question is: Is there a better way to handle button actions in WPF? The answer is Commands . In this post, we’ll learn how to use Commands in WPF with a simple, practical example. We’ll cover: What a Command is How it works Why using Commands is better than Click events How buttons can automatically enable or disable based on conditions What is a Command in WPF? In WPF, a Command acts as a middle layer between the UI and your logic. Instead of the button directly calling a method, it triggers a Command , and the Command decides: What code should run Whether the button s...

Mastering Modern UI: A Step-by-Step Guide to Creating Metro UI in WPF


To create metro ui you first have to install "Mahapps.metro" from NuGet.To install it right click on project and click on manage NuGet and type Mahapps.metro you will get this package you have to install from here.Now you are ready to create metro ui.Now open you Mainwindow.xaml and add one namespace like bellow
xmlns:Controls="clr-namespace:MahApps.Metro.Controls;assembly=MahApps.Metro" 
and replace Window to Controls:MetroWindow
Now your Mainwindow.xaml become
<Controls:MetroWindow x:Class="ProjectName.MainWindow"
          xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
          xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
          xmlns:Controls="clr-namespace:MahApps.Metro.Controls;assembly=MahApps.Metro"
          Title="MainWindow"
          Height="600"
          Width="800">

  <!-- your content -->

</Controls:MetroWindow>

Now you have to modify Mainwindow.xaml.cs file in wpf application before it was inherited from Window.Now to make it metro you have to replace Window to MetroWindow like

  public partial class MainWindow :MetroWindow 
 { 
         public MainWindow() 
         { 
               InitializeComponent(); 
         }
}

Now add some Button and run the application it will display window with black
background.To apply metro default style you have to add some resources.
All of MahApp.Metro’s resources are contained within separate resource dictionaries.
In order for most of the controls to adopt the MahApps.Metro theme,you will need to
add the ResourceDictionaries to your App.xaml

<Application x:Class="WpfApplication.App"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             StartupUri="MainWindow.xaml">
<Application.Resources>
<ResourceDictionary>
<ResourceDictionary.MergedDictionaries>

<!-- MahApps.Metro resource dictionaries. Make sure that all file names are Case Sensitive! -->
 <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/
   Controls.xaml"/>

<ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/
  Fonts.xaml"/>
<ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/
  Colors.xaml"/>
      <!-- Accent and AppTheme setting -->
   <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Accents/Blue.xaml" />
<ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Accents/BaseLight.xaml" />
   </ResourceDictionary.MergedDictionaries>
   </ResourceDictionary>
  </Application.Resources>
</Application>

Now if you run the application you will get metro window with default style.
Watch video for more detail




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