Error Binding DatePicker control Date property

Question

I am building a Universal App and am getting a run time error on my DatePicker control when trying to bind the Date property.
I have this in my XAML:
 <DatePicker x:Uid="StartDate" Header="Start Date" Date="{Binding StartDateUtc, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"/>
I am binding it to a DateTime property called StartDateUtc. However when firing up the app, I am getting this error:
Exception = {"The text associated with this error code could not be found.\r\n\r\nFailed to assign to property '%0'. [Line: 42 Position: 63]"}
Position 63 happens to be the Date Property. If I remove it, the control is displayed.

Answer 1

Hi Craig,
>> I'm not sure a whole project is needed. Here's the XAML
I failed to reproduce your issue “Failed to assign to property”.  Could you please share a sample project through OneDrive to help us reproduce this issue?
By the way, the type of
DatePicker.Date property is DateTimeOffset rather than DateTime. Please try the ViewModel as following and let me know if it makes any difference.
public class CustomViewModel : INotifyPropertyChanged
public event PropertyChangedEventHandler PropertyChanged;
private void NotifyPropertyChanged([CallerMemberName] String propertyName = "")
if (PropertyChanged != null)
PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
private DateTimeOffset _startDateUtc;
[RestorableState]
public DateTimeOffset StartDateUtc
get
return this._startDateUtc;
set
if (value != this._startDateUtc)
this._startDateUtc = value;
NotifyPropertyChanged();
Regards,
Jeffrey
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