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selectable element after last character in ListviewHeader
Posted: 18 Jun 2019, 22:47
by wyvern010
As the topic says:
<UserControl x:Class="WpfApp1.SSC.PersonsListView"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:local="clr-namespace:WpfApp1.SSC"
mc:Ignorable="d"
d:DesignHeight="450" d:DesignWidth="800">
<ListView Grid.Row="2" ItemsSource="{Binding cbPersons}">
<ListView.View>
<GridView>
<GridViewColumn>
<GridViewColumn.Header>
<GridViewColumnHeader Tag="Firstname" MouseLeftButtonDown="GridViewColumnHeader_MouseLeftButtonDown">First name</GridViewColumnHeader>
</GridViewColumn.Header>
<GridViewColumn.CellTemplate>
<DataTemplate >
<TextBlock Text="{Binding Firstname}" Style="{StaticResource TextColor}" ></TextBlock>
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
<GridViewColumn>
<GridViewColumn.Header>
<GridViewColumnHeader Tag="Lastname" MouseLeftButtonDown="GridViewColumnHeader_MouseLeftButtonDown">Last name</GridViewColumnHeader>
</GridViewColumn.Header>
<GridViewColumn.CellTemplate>
<DataTemplate>
<TextBlock Text="{Binding Lastname}" Style="{StaticResource TextColor}" ></TextBlock>
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
</GridView>
</ListView.View>
</ListView>
</UserControl>
i dont know what is, but i think its ugly.
Re: selectable element after last character in ListviewHeader
Posted: 19 Jun 2019, 00:22
by digimbyte
Show code please, a tiny picture doesn't explain anything
Re: selectable element after last character in ListviewHeader
Posted: 19 Jun 2019, 11:44
by wyvern010
Show code please, a tiny picture doesn't explain anything
Updated.
Re: selectable element after last character in ListviewHeader
Posted: 20 Jun 2019, 13:10
by sfernandez
It is a bug in the GridViewHeaderRowPresenter, because it is wrapping the GridViewColumnHeader you specified with another one. I created a report in our bugtracker for this:
https://www.noesisengine.com/bugs/view.php?id=1502
While we fix it you can workaround this issue by specifying directly the header text in the GridViewColumn:
<GridViewColumn Header="First name"/>
And you can handle the header clicks in the ListView control, checking if the sender of the event is a GridViewColumnHeader:
<ListView ... ButtonBase.Click="GridViewColumnHeader_Click">
private void GridViewColumnHeader_Click(object sender, MouseButtonEventArgs e)
{
if (sender is GridViewColumnHeader) { ... }
}
Please confirm this is working for you.
Re: selectable element after last character in ListviewHeader
Posted: 20 Jun 2019, 19:34
by wyvern010
Did exactly as you said:
<GridViewColumn Header="First name">
<ListView Grid.Row="2" ItemsSource="{Binding cbPersons}" MouseDoubleClick="ListView_MouseDoubleClick" ButtonBase.Click="GridViewColumnHeader_Click" SelectedItem="{Binding SelectedPerson}">
private void GridViewColumnHeader_Click(object sender, RoutedEventArgs e)
{
(breakpoint not hit) GridViewColumnHeader column = (sender as GridViewColumnHeader);
}
The GridViewColumnHeader_Click get assigned, but not called.
I've put a breakpoint on the first line into the function, which didn't hit.
Re: selectable element after last character in ListviewHeader
Posted: 21 Jun 2019, 17:46
by sfernandez
I suppose you have overriden the
ConnectEvent method in the code-behind class:
protected override bool ConnectEvent(object source, string eventName, string handlerName)
{
if (eventName == "Click" && handlerName == "GridViewColumnHeader_Click")
{
((UIElement)source).AddHandler(ButtonBase.ClickEvent, new RoutedEventHandler(GridViewColumnHeader_Click));
return true;
}
//...
return false;
}
Without that piece of code event handlers won't be registered so will never be called.
Re: selectable element after last character in ListviewHeader
Posted: 22 Jun 2019, 13:21
by wyvern010
I did hookup it wrong, now the GridViewColumnHeader_Click(object sender, RoutedEventArgs e) gets called, but the sender is always ListView.
all code in
if (sender is GridViewColumnHeader) { .. }
never gets executed.
Edit:
if (sender is GridViewColumnHeader) { .. }
must be
if (e.Source is GridViewColumnHeader) { .. }
Now works as expected!
Side effect is that i can't use the ColumnHeader.Tag to pass data to the Sorting function.
Re: selectable element after last character in ListviewHeader
Posted: 25 Jun 2019, 10:11
by sfernandez
You're right, it should be e.Source, the object who initially fired the event.
To help with the sorting, can't you use the Column info of the GridViewColumnHeader?