binding a custom property class WPF

Question

I got a custom WPF property class named "RFPGegevens"

public class RFPGegevens
{
    private string _klant;
    public String Klant
    {
        get { return _klant; }
        set { _klant = value; }
    }
 }

In my ViewModel I got a property RFPGegevens

    private RFPGegevens _rfpGegevens;

    public RFPGegevens RfpGegevens
    {
        get
        {
            if (_rfpGegevens == null)
                _rfpGegevens = new RFPGegevens();
            return _rfpGegevens;
        }
        set
        {
            _rfpGegevens = value;
            base.RaisePropertyChangedEvent("RfpGegevens");
        }
    }

This property is filled correctly, if I debug this is the result:

enter image description here

In my View I'm binding the property "RFPGegevens" to the datacontext of my Grid

<Grid DataContext="{Binding RfpGegevens}">

and still if I debug the "Klant" property field is filled.

enter image description here

But as I bind this property in the View my textbox is still empty.

<TextBox Text="{Binding Klant, Mode=TwoWay}"/>

I also tried this but nothings seems to work:

<TextBox Text="{Binding RFPGegevens.Klant, Mode=TwoWay}"/>

Don't know what I'm doing wrong.
Thanks in advance ;)

Where did you debug the get-accessor? Is it ensured, that it is called by the WPF, for the TextBox-Binding? What does the output-window in VS say about the binding, when running? — Andreas H.
– Andreas H., Commented Oct 25, 2011 at 12:10
Does your ViewModel implement INotifyPropertyChanged, i see you are calling the base.RaisePropertyChanged. — BigL
– BigL, Commented Oct 25, 2011 at 12:16
I implemented the INotifyPropertyChanged and the windows datacontext is bound correctly. And for Andreas can you restate your question pls? — jefsmi
– jefsmi, Commented Oct 25, 2011 at 12:19
So if you put a textbox outside the grid it bind's correct? And just a quick check.. <TextBox Text="{Binding RFPGegevens.Klant, Mode=TwoWay}"/> uses RFP while your prop is named Rfp — jrb
– jrb, Commented Oct 25, 2011 at 12:26

Haris Hasan · Accepted Answer · 2011-10-25 12:18:58Z

1

try with two things

<TextBox Text="{Binding Klant, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"/>

public class RFPGegevens
{
    private string _klant;
    public String Klant
    {
        get { return _klant; }
        set {
              _klant = value; 
              //Raise the property changed event here
            }
    }
 }

answered Oct 25, 2011 at 12:18

Haris Hasan

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S2S2 · Accepted Answer · 2011-10-25 12:53:40Z

1

You need to implement the INotifyPropertyChanged interface for your custom class also as below:

public class RFPGegevens : INotifyPropertyChanged

and raise the propertychanged events from the set accessor of your properties.

answered Oct 25, 2011 at 12:53

S2S2

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Orlando Gomez · Accepted Answer · 2017-01-11 00:05:45Z

0

You forget to add inheritance from INotifyPropertyChanged

answered Jan 11, 2017 at 0:05

Orlando Gomez

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