date string format binding not working - wpf

Question

I am trying to get date format as "MM/dd/yyyy", however, the current date format is coming with time too, I tried to format it with the following codes, however it is not changing, could you please correct me as follows:
<DataGridTextColumn Header="Bill Date" Binding="{Binding BillDate, StringFormat={}{0:MM/dd/yyyy}}" Width="90" IsReadOnly="True" />
and
<DataGridTemplateColumn Header="Bill Date" Width="90">
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<Label Content="{Binding BillDate}" ContentStringFormat="MM/dd/yyyy" />
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
my property code is as follows:
Property BillDate As Date
Get
Return _BillDate
End Get
Set(Value As Date)
If Not _BillDate = Value Then
_BillDate = Value
NotifyPropertyChanged("BillDate")
End If
End Set
End Property
I dont want to correct at property level, I only want to display the format at XAML, the above format is not working although it is correct to my knowledge.
EDIT:
After many trails and few experients, I came to know that the solution is not building any new code. So, the problem now is - new, modified xaml is not getting built. Could you please help me in this.

Answer 1

Try
"{Binding BillDate, StringFormat=d}"
which should give you month/day/year as output.
Update
The control Label's Content property is of type object and does not apply formatting like a string does. Here are your options,
Use the ContentStringFormat property on the label:
<Label ContentStringFormat="d">
<system:DateTime>2015/3/4 13:6:55</system:DateTime>
</Label>
Or the TextBox control, the Text property is a string and it takes formatting parameters.

Answer 2

The type of your property should be DateTime, not Date:
Property BillDate As DateTime
...
End Property
Then this works:
<Label Content="{Binding BillDate}" ContentStringFormat="MM/dd/yyyy"/>
But you might perhaps better use a TextBlock instead of a Label:
<TextBlock Text="{Binding BillDate, StringFormat=MM/dd/yyyy}"/>