String was not recognized as a valid DateTime in MainWindow.xaml.cs at line #300

[siddharth96]

System.FormatException: String was not recognized as a valid DateTime. at 
System.DateTimeParse.Parse(String s, DateTimeFormatInfo dtfi, DateTimeStyles styles) at 
Xceed.Wpf.Toolkit.DateTimeUpDown.<>c__DisplayClass11.<ParseValueIntoDateTimeInfo>b__10(DateTimeInfo info) at 
System.Collections.Generic.List`1.ForEach(Action`1 action) at 
Xceed.Wpf.Toolkit.DateTimeUpDown.OnValueChanged(Nullable`1 oldValue, Nullable`1 newValue) at 
Xceed.Wpf.Toolkit.DateTimePicker.OnValueChanged(Nullable`1 oldValue, Nullable`1 newValue) at 
Xceed.Wpf.Toolkit.Primitives.UpDownBase`1.OnValueChanged(DependencyObject o, DependencyPropertyChangedEventArgs e) at 
System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e) at 
System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e) at 
System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args) at 
System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType) at 
System.Windows.DependencyObject.SetValueCommon(DependencyProperty dp, Object value, PropertyMetadata metadata, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType, Boolean isInternal) at 
WindowsTweaker.MainWindow.LoadTab(String tagVal) in z:\codes\windows-tweaker\WindowsTweaker\MainWindow.xaml.cs:line 300 at 
System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target) at 
System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised) at 
System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args) at 
System.Windows.Controls.ListBox.OnSelectionChanged(SelectionChangedEventArgs e) at 
System.Windows.Controls.Primitives.Selector.Selecti...

[swamy2712]

I'm also facing the similar issue. Is this issue fixed in v5.2.1? When this version will be released? reply ASAP.

[siddharth96]

@swamy2712 , I'm not to reproduce this bug. If you're able to reproduce this, can you let me know why is it happening? I've marked it for v5.4 (5.3 is already released), which will come in next two weeks.

[swamy2712]

HI @siddharth96 Whenever the custom DateTime format is used (for ex dd/mm/yyyy hh:mm:tt).

Hope this is helpful for you to fix the problem.