tengo esta clase que hereda de ICommand
public class SavePersonCommand : ICommand
{
public event EventHandler CanExecuteChanged;
public bool CanExecute(object parameter)
{
return !string.IsNullOrEmpty((string)parameter);
}
public void Execute(object parameter)
{
string Hola = "Hola";
Hola = Hola + " " + parameter;
}
public void RaiseCanExecuteChanged()
{
CanExecuteChanged?.Invoke(this, new EventArgs());
}
}
realmente no hace nada. Solo quiero que entre el execute para ir avanzando
en mi XAML esta este codigo
<TextBlock Name="TxtbName" Text="Nombre:" Grid.Row="0" Grid.Column="0" FontSize="12" Height="30"></TextBlock>
<TextBlock Name="Txtbastname" Text="Apellido Paterno:" Grid.Row="1" Grid.Column="0" FontSize="12"></TextBlock>
<TextBlock Name="TxtbSecondLastName" Text="Apellido Materno:" Grid.Row="2" Grid.Column="0" FontSize="12"></TextBlock>
<TextBlock Name="TxtbFullName" Text="Nombre Completo:" Grid.Row="3" Grid.Column="0" FontSize="12"></TextBlock>
<TextBox Name="TxtName" Text="{Binding Path=PersonName, Mode=TwoWay}" Grid.Row="0" Grid.Column="1" ></TextBox>
<TextBox Name="TxtLastname" Text="{Binding Path=LastName, Mode=TwoWay}" Grid.Row="1" Grid.Column="1"></TextBox>
<TextBox Name="TxtSecondLastName" Text="{Binding Path=SecondLastName, Mode=TwoWay}" Grid.Row="2" Grid.Column="1"></TextBox>
<TextBox Name="TxtFullName" Text="{Binding Path=FullName, Mode=OneWay}" Grid.Row="3" Grid.Column="1"></TextBox>
<Button Name="BtnAdd"
Grid.Column="1"
Grid.Row="3"
Width="100"
TextBlock.TextAlignment="Center"
Content="Add" HorizontalAlignment="Right"
Command="{Binding Path=SavePersonCommand}"
CommandParameter="{Binding Text, ElementName=TxtName}">
</Button>
como pueden ver en el botón BtnAdd usa command y el binding a mi clase SavePersondCommand y como parametro esta el elemento TxtName
aqui esta mi viewModel
public class ViewModelPerson : BaseViewModel
{
private Person person;
private SavePersonCommand savePersonCommand;
public ViewModelPerson()
{
this.person = new Person();
this.savePersonCommand = new SavePersonCommand();
this.person.Name = "Gustavo";
}
public string PersonName
{
get
{
return this.person.Name;
}
set
{
this.person.Name = value;
base.NotifyPropertyChanged("PersonName");
}
}
public string LastName
{
get
{
return this.person.LastName;
}
set
{
this.person.LastName = value;
base.NotifyPropertyChanged("LastName");
}
}
public string SecondLastName
{
get
{
return this.person.SecondLastName;
}
set
{
this.person.SecondLastName = value;
base.NotifyPropertyChanged("SecondLastName");
}
}
public string FullName
{
get
{
return this.GetFullName(this.PersonName, this.LastName, this.SecondLastName);
}
}
public ICommand SavePersonCommand
{
get { return this.savePersonCommand; }
}
public ObservableCollection<Person> Persons { get; set; }
private string GetFullName(string name, string lastName, string secondLastName)
{
string fullName = name + " " + lastName + " " + secondLastName;
return fullName;
}
}
El viewModel si esta enlazado.
Por que cuando cambia el texto del TxtName no entra mi metodo Execute
