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WPF/MVVM Quick Start Tutorial

, 10 Oct 2012 CPOL
A quick example of MVVM in WPF
MvvmExample.zip
MvvmExample
Example1
Properties
Settings.settings
Example2
Properties
Settings.settings
Example3
Properties
Settings.settings
Example4
Properties
Settings.settings
Example5
Properties
Settings.settings
Example6
Properties
Settings.settings
MicroMvvm
Properties
MvvmExample.suo
using System;
using System.ComponentModel;
using System.Diagnostics;
using System.Linq.Expressions;

//Event Design: http://msdn.microsoft.com/en-us/library/ms229011.aspx

namespace MicroMvvm
{
    [Serializable]
    public abstract class ObservableObject : INotifyPropertyChanged
    {
        [field: NonSerialized]
        public event PropertyChangedEventHandler PropertyChanged;

        protected virtual void OnPropertyChanged(PropertyChangedEventArgs e)
        {
            var handler = this.PropertyChanged;
            if (handler != null)
            {
                handler(this, e);
            }
        }

        protected void RaisePropertyChanged<T>(Expression<Func<T>> propertyExpresssion)
        {
            var propertyName = PropertySupport.ExtractPropertyName(propertyExpresssion);
            this.RaisePropertyChanged(propertyName);
        }

        protected void RaisePropertyChanged(String propertyName)
        {
            VerifyPropertyName(propertyName);
            OnPropertyChanged(new PropertyChangedEventArgs(propertyName));
        }

        /// <summary>
        /// Warns the developer if this Object does not have a public property with
        /// the specified name. This method does not exist in a Release build.
        /// </summary>
        [Conditional("DEBUG")]
        [DebuggerStepThrough]
        public void VerifyPropertyName(String propertyName)
        {
            // verify that the property name matches a real,  
            // public, instance property on this Object.
            if (TypeDescriptor.GetProperties(this)[propertyName] == null)
            {
                Debug.Fail("Invalid property name: " + propertyName);
            }
        }
    }
}

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This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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About the Author

Barry Lapthorn

United Kingdom United Kingdom
Jack of all trades.

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