Wpf binding is not working properly - wpf

Question

My ViewModel
public class MyViewModel : ViewModelBase
{
// INotifyPropertyChanged is implemented in ViewModelBase
private String _propX;
public String PropX
{
get { return _propX; }
set
{
if (_propX != value)
{
_propX = value;
RaisePropertyChanged(() => PropX);
}
}
}
private String _propY;
public String ServerIP
{
get { return _propY; }
set
{
if (_propY != value)
{
_propY = value;
RaisePropertyChanged(() => ServerIP);
}
}
}
public A()
{
this._propY = "000.000.000.000";
this._propY = "000.000.000.000";
}
}
// EDIT
// This is the command that resets the properties
private RelayCommand _resetFormCommand;
public ICommand ResetConnectionFormCommand
{
get
{
if (_resetFormCommand == null)
{
_resetFormCommand = new RelayCommand(param => this.ExecuteResetFormCommand(), param => this.CanExecuteResetFormCommand);
}
return _resetFormCommand;
}
}
private bool CanExecuteResetFormCommand
{
get
{
return !String.IsNullOrWhiteSpace(this._propX) ||
!String.IsNullOrWhiteSpace(this._propY);
}
}
private void ExecuteResetFormCommand()
{
this._propX = "";
this._propY = "";
}
My View xaml
<TextBox Name="propX" Text="{Binding PropX }" PreviewTextInput="textBox_PreviewTextInput" />
<TextBox Name="propY" Text="{Binding PropY }" PreviewTextInput="textBox_PreviewTextInput" />
<Border>
<Button Content="Reset" Name="resetBtn" Command="{Binding ResetFormCommand}" />
</Border>
My View code behind
private MyViewModel vm;
public ConnectionUserControl()
{
InitializeComponent();
vm = new MyViewModel();
this.DataContext = vm;
}
private void textBox_PreviewTextInput(object sender, TextCompositionEventArgs e)
{
ValidateInput(sender as TextBox, e);
}
The reset command resets the properties in my view model but the textboxes still contain their values, the binding is not working properly :(
Am i missing something here?

Answer 1

You should reset the properties, not the private members:
private void ExecuteResetFormCommand()
{
this.PropX = "";
this.PropY = "";
}

Answer 2

How are you resetting the values? You may be overriding the databinding when you reset the values. It would be helpful if you post the code that gets executed when the button is clicked.

Answer 3

In your xaml-code you have to set the binding like:
<TextBox Name="propX" Text="{Binding PropX, Mode=TwoWay}" .../>

Answer 4

binding has to be two way in order for textbox to update itself from viewmodel

Answer 5

In your Code-behind, you have a property ServerIP, which I think you wanted to be named as PropY, since your TextBox binds to a PropY property.
<TextBox Name="propY" Text="{Binding PropY }" PreviewTextInput="textBox_PreviewTextInput" /
Also, you should be assigning the value to your property in your ExecuteResetFormCommand command, and not your private member since the private member does not trigger INotifyPropertyChanged
private void ExecuteResetFormCommand()
{
this.PropX = "";
this.PropY = ""; // <-- Currently you have PropY declared as ServerIP
}