What should you do ?

….
set
{
_Data = value;
}
}

private void NofityPropertyChanged(string info)
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(info));
}
}

The UI is not being updated when the Data property is set.

You need to ensure that the DisplayData class correctly updates the UI when the Data ..

What should you do ?

….
set
{
_Data = value;
}
}

private void NofityPropertyChanged(string info)
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(info));
}
}

The UI is not being updated when the Data property is set.

You need to ensure that the DisplayData class correctly updates the UI when the Data ..

What should you do ?

A.
Insert the followiing code at line 14
NotifyPropertyChanged(“Data”);

B.
Insert the followiing code at line 16
NotifyPropertyChanged(“Data”);

C.
Insert the followiing code at line 14
NotifyPropertyChanged(value);

D.
Insert the followiing code at line 16
NotifyPropertyChanged(value);

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Mr ijs

Mr ijs

Full question text:

You are developing a Windows Presentation Foundation (WPF) application with the following class.
(Line numbers are included for reference only)

01 public class DisplayData: INotifyPropertyChanged
02 {
03 public event
04 PropertyChangedEventHandler PropertyChanged;
05 private string Data;
06 public string Data
07 {
08 get
09 {
10 return _Data;
11 }
12 set
13 {
14
15 _Data = value;
16
17 }
18 }
19 private void NotifyPropertyChanged (string Info)
20 {
21 if (PropertyChanged != null)
22 {
23 PropertyChanged (this,
24 new PropertyChangedEventArgs(Info));
25 }
26 }
27 }

The UI is not being updated when the Data property is set.
You need to ensure that the DisplayData class correctly updates the UI when the Data property is set.
What should you do?

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