61 lines
1.6 KiB
C#
61 lines
1.6 KiB
C#
namespace FahzeugWPF;
|
|
|
|
using System.ComponentModel;
|
|
using System.Linq.Expressions;
|
|
using System.Reflection;
|
|
using System.Runtime.CompilerServices;
|
|
|
|
public abstract class ViewModelBase : INotifyPropertyChanged
|
|
{
|
|
#region Events
|
|
|
|
[field: NonSerialized]
|
|
public event PropertyChangedEventHandler PropertyChanged;
|
|
|
|
protected void OnPropertyChanged(Expression<Func<object>> expression)
|
|
{
|
|
var lambdaExpression = expression as LambdaExpression;
|
|
|
|
MemberExpression memberExpression = null;
|
|
if (lambdaExpression.Body is UnaryExpression)
|
|
{
|
|
var unaryExpression = lambdaExpression.Body as UnaryExpression;
|
|
memberExpression = unaryExpression.Operand as MemberExpression;
|
|
}
|
|
else
|
|
{
|
|
memberExpression = lambdaExpression.Body as MemberExpression;
|
|
}
|
|
|
|
if (memberExpression != null)
|
|
{
|
|
var propertyInfo = memberExpression.Member as PropertyInfo;
|
|
if (propertyInfo != null)
|
|
{
|
|
OnPropertyChanged(propertyInfo.Name);
|
|
}
|
|
}
|
|
}
|
|
|
|
protected void OnPropertyChanged([CallerMemberName] string propertyName = null)
|
|
{
|
|
if (PropertyChanged != null)
|
|
{
|
|
PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
|
|
}
|
|
}
|
|
|
|
protected bool SetProperty<T>(ref T field, T value, [CallerMemberName] string? propertyName = null)
|
|
{
|
|
if (EqualityComparer<T>.Default.Equals(field, value))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
field = value;
|
|
OnPropertyChanged(propertyName);
|
|
return true;
|
|
}
|
|
#endregion Events
|
|
}
|