Hi,
make sure you FieldNames do not contains "Spaces" and that your "Names" are different. Here is the second column modified.
make sure you FieldNames do not contains "Spaces" and that your "Names" are different. Here is the second column modified.
<xcdg:Column FieldName="TheSecondOne" x:Name="start2">
<xcdg:Column.CellContentTemplate>
<DataTemplate>
<tkt:TimePicker Value="{Binding . , Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" TimeInterval="0:15" />
</DataTemplate>
</xcdg:Column.CellContentTemplate>
</xcdg:Column>