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...

How to show xml data in DataGrid?

XMLData.xml

<Students>
  <Student>
    <Roll>1</Roll>
    <Name>Kumar</Name>
  </Student>
  <Student>
    <Roll>2</Roll>
    <Name>Harsh</Name>
  </Student>
</Students>

Create a class for xml data
public partial class Student
    {

        public int Roll { getset; }
      
        
        public string Name { getset; }
    }
Code To get data from xml file
XmlSerializer serializer = new XmlSerializer(typeof(ObservableCollection<Student>)newXmlRootAttribute("Students"));//here Student is type and Students is root of xml
         
            using (StreamReader reader = newStreamReader(@"D:\XMLData.xml"))
            {
                //Deserilize the xml file and assign to collection
                LstStudents =(ObservableCollection<Student>)serializer.Deserialize(reader);
            };
private ObservableCollection<Student> _lstStudents=new ObservableCollection<Student>();

        public ObservableCollection<Student> LstStudents
        {
            get { return _lstStudents; }
            set {SetProperty(ref _lstStudents , value); }
        }

Bind LstStudents to DataGrid
<DataGrid ItemsSource="{Binding LstStudents}"Width="200" AutoGenerateColumns="False">
                <DataGrid.Columns>
                    <DataGridTextColumn Header="Roll"Binding="{Binding Roll}"  />
                    <DataGridTextColumn Header="Name"Binding="{Binding Name}"  />
                </DataGrid.Columns>
              
            </DataGrid>

Comments

Popular posts from this blog

Filter DataGrid and ListView in wpf using ICollectionView

Pagination of DataGrid in WPF using MVVM

How to Create TabControl using Prism Region