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'ToolTip' cannot have a logical or visual parent

5 Answers 446 Views

GridView

This is a migrated thread and some comments may be shown as answers.

Quang Khải asked on 29 Dec 2016, 07:30 AM

I have tried to set up a gridview which includes a date column.

If I have an invalid input for a date column, I get a validation error -> That is OK.

If I THEN use the dropdown to choose a date, the program crashes with the following exception: 'ToolTip' cannot have a logical or visual parent.

My GridViewColumn

<telerik:GridViewComboBoxColumn x:Name="InputValueComboBox" Header="ABC" ItemsSourceBinding="{Binding Inputs}" DataMemberBinding="{Binding Input, ValidatesOnDataErrors=True}" IsComboBoxEditable="True" SelectedValueMemberPath="Value" DisplayMemberPath="Value" SortMemberPath="Value" Width="Auto" CellEditTemplateSelector="{StaticResource InputValueEditTemplateSelector}" />

My TemplateSelector:

<DataTemplate x:Key="DateValueEditTemplate">

<Grid>

<Grid.ColumnDefinitions>

<ColumnDefinition Width="*"/>

<ColumnDefinition Width="Auto"/>

</Grid.ColumnDefinitions>

<TextBox Grid.Column="0" Text="{Binding Input, Mode=TwoWay}" />

<telerik:RadDropDownButton x:Name="FilterCalendarDropdown" Grid.Column="1" AutoOpenDelay="0:0:0.0">

<telerik:RadDropDownButton.DropDownContent>

<telerik:RadCalendar SelectedDate="{Binding DateValue, Mode=TwoWay}" SelectionChanged="OnSelectionChanged" />

</telerik:RadDropDownButton.DropDownContent>

</telerik:RadDropDownButton>

</Grid>

</DataTemplate>

<styleSelectors:PropertyValueDataTemplateSelector x:Key="InputValueEditTemplateSelector" DateTemplate="{StaticResource DateValueEditTemplate}" />

Any idea to solve the problem?

'ToolTip' cannot have a logical or visual parent

5 Answers, 1 is accepted