Below is the XAML i currently have. I want to emulate a tree by having a toggle button and a listview will bind it's visibility to the toggle buttons chcked state. Problem is, I need to bind to a child of a sibling. Is this even possible?
this code doesn't work becuase the toggle isn't an ancestor.
<StackPanel Orientation="Vertical">
<StackPanel Orientation="Horizontal">
<ToggleButton Name="tglBtn">+</ToggleButton>
<TextBlock>test</TextBlock>
</StackPanel>
<ListView Visibility="{Binding RelativeSource={RelativeSource AncestorType={x:Type ToggleButton}}, Path=IsChecked, Converter={StaticResource boolToVis}}">
<ListView.View>
<GridView>
<GridViewColumn Header="Thread" DisplayMemberBinding="{Binding thread_name}" />
<GridViewColumn Width="Auto" Header="Created" DisplayMemberBinding="{Binding thread_created}" />
<GridViewColumn Width="Auto" Header="Modified" DisplayMemberBinding="{Binding last_modified}" />
</GridView>
</ListView.View>
</ListView>
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
You can use ElementName Binding to access the ToggleButton
I've found a solution to this problem that is reusable in Styles (it does not require using the ElementName). I've written up the full answer, with examples and screenshots here.
Related
I have a treeview in wpf that is showing some strange behavior (at least I think it's strange). I don't see anywhere I can attach an image but basically on some of the items it looks like it's double spaced or has an extra 3px or so margin and on some it looks like it's single spaced. Here is the XAML defining it:
<TreeView Margin="5,0,0,5" ItemsSource="{Binding SortedCategories}" HorizontalContentAlignment="Stretch">
<TreeView.Resources>
<HierarchicalDataTemplate DataType="{x:Type COBie:CategoryData}" ItemsSource="{Binding SortedTypes}">
<CheckBox IsChecked="{Binding AnyChecked, Mode=TwoWay}" Content="{Binding CategoryName}" IsEnabled="{Binding HasTypes}" />
</HierarchicalDataTemplate>
<DataTemplate DataType="{x:Type COBie:InstanceData}">
<CheckBox IsChecked="{Binding isChecked, Mode=TwoWay}" Content="{Binding ElemID}" />
</DataTemplate>
<DataTemplate DataType="{x:Type COBie:TypeData}">
<TreeViewItem IsEnabled="{Binding HasInstances}" HorizontalContentAlignment="Stretch">
<TreeViewItem.Header>
<CheckBox IsChecked="{Binding isChecked, Mode=TwoWay}" Content="{Binding ElemName}" />
</TreeViewItem.Header>
<ListView ItemsSource="{Binding SortedInstances}">
<ListView.View>
<GridView>
<GridViewColumn>
<GridViewColumn.CellTemplate>
<DataTemplate>
<CheckBox IsChecked="{Binding isChecked, Mode=TwoWay}" />
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
<GridViewColumn Header="ID" DisplayMemberBinding="{Binding ElemID}" />
<GridViewColumn Header="Name" DisplayMemberBinding="{Binding ElemName}" />
<GridViewColumn Header="Mark" DisplayMemberBinding="{Binding Mark}" />
<GridViewColumn Header="Room" DisplayMemberBinding="{Binding RoomDisplay}" />
</GridView>
</ListView.View>
</ListView>
</TreeViewItem>
</DataTemplate>
</TreeView.Resources>
</TreeView>
The only other relevant style that would apply is:
<Style TargetType="TreeViewItem">
<Setter Property="IsExpanded" Value="{Binding IsExpanded}" />
</Style>
I don't see anywhere that defines a margin at all and even if it did all of the elements are of the same class so it should apply to all equally.
Anyone know what is going on?
I had the same issue, that there were seemingly random gaps.
After looking closer I found out that the gaps appeared around items, that have underscore(s) in the name.
If you put the string directly in the content property of the CheckBox and it contains underscores, the CheckBox will surround a TextBlock with a Control named AccessText, probably to support short cut keys (similar to underscores in Button's Content property).
Now for some reason the Margin of the Checkbox is set on the TextBlock perfectly fine, if there is no AccessText involved, but is not set on the TextBlock inside the AccessText. This way the TextBlock inside the AccessText will have default TextBlock Style, which in my case was with Margin=5.
I guess in your case it must be a closely related issue.
We built our user interface from XML definitions (not XAML) but underneath we use a WPF to present the UI. That is at runtime, we create the WPF UI based on our XML definition.
<ListView ItemsSource="{Binding}" Width="400px" IsSynchronizedWithCurrentItem="True" HorizontalAlignment="Left" Name="ListView"
ScrollViewer.VerticalScrollBarVisibility="Disabled" ScrollViewer.HorizontalScrollBarVisibility="Disabled" Grid.ColumnSpan="3"
SelectionChanged="ListView_SelectionChanged" BorderThickness="0" IsTabStop="False">
<ListView.View>
<GridView x:Name="grid">
<GridViewColumn Width="100px">
<GridViewColumn.CellTemplate>
<DataTemplate>
<TextBlock Text="{Binding Path=ModuleName}" Width="100px" Foreground="Black" />
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
<GridViewColumn Width="200px">
<GridViewColumn.CellTemplate>
<DataTemplate>
<TextBox Text="{Binding Path=ModuleUserCount, TargetNullValue=''}" MaxLength="6" Name="txtModuleUserCount" KeyDown="txtModuleUserCount_KeyDown" MinWidth="180" MaxWidth="200" BorderBrush="Gray"/>
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
</ListView.View>
</ListView>
I generate 4 module through XML SO UI have four TextBox in these dynamic TextBox tabIndex is not working. I tried KeyboardNavigation.TabNavigation="Cycle" but it's not working. How to make tab navigation work for this layout?
I know its too too late, but I would like to answer. I had the same problem. I tried following way and it resolved my problem: Set:
KeyboardNavigation.TabIndex="10"
or whatever value you require in ListView itself.
i am trying to use styles to prevent from repeting code, by putting them in a Resource Disctionary.
My question is, when we have a GridViewColumn in a ListView, which one of the columns have a DataTemplate, and in that DataTemplate we have the CellTemplate with only a CheckBox, can we bind the CheckBox state when the DataTemplete is in a ResourceDictionary?
What i have is this in my XAML:
<ListView Name="listView">
<ListView.View>
<GridView AllowsColumnReorder="False">
<GridViewColumn DisplayMemberPath="{Binding [1]}"/>
<GridViewColumn DisplayMemberPath="{Binding [2]}"/>
<GridViewColumn DisplayMemberPath="{Binding [4]}"/>
<GridViewColumn DisplayMemberPath="{Binding [5]}"/>
<GridViewColumn DisplayMemberPath="{Binding [6]}"/>
<GridViewColumn DisplayMemberPath="{Binding [7]}"/>
<GridViewColumn>
<GridViewColumn.CellTemplate>
<DataTemplate>
<CheckBox IsThreeState="False" IsChecked="{Binding [8]}" Unchecked="CheckBox_Changed" Checked="CheckBox_Changed"/>
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
</GridView>
</ListView.View>
</ListView>
And i am trying to do something like this in the Resource Dictionary:
<DataTemplate x:Key="ListViewCheckboxCell">
<StackPanel>
<CheckBox IsThreeState="False" IsChecked="Make reference"/>
</StackPanel>
</DataTemplate>
And the values in that column is always a bool.
Thanks in advance!
What you did seems correct. You'll now have to write
<GridViewColumn CellTemplate="{StaticResource ListViewCheckboxCell}" />
The template will be taken into account, you can leave exactly the same template than the original in your resource dictionary: The binding is dynamically resolved, so when the XAML will be read, bindings will automatically be set to the related object, following what you indicated
I have a textbox where you can input an integer (which will the size of the UniformGrid). On a button click, a UniformGrid is generated with each grid contains some textblock, textbox, and a button, generated under different ElementName. I went through so many tutorial and all simply Add something to the children. And I can't seem to set the binding logic worked out - which bind to what, and which is being itemcontrolled. I went through wpftutorial and it just confuses me further. Appreciate if anyone can explain the logic in simple terms.
UniformGrid cannot really be used as an ItemsHost for an ItemsControl, mainly because the DataTemplate can only take a single child, which prohibits its use in this context.
Here's an alternative approach that might help you achieve what you want (I think)
<ListView ItemsSource="{Binding MyData}">
<ListView.View>
<GridView>
<GridView.ColumnHeaderContainerStyle>
<Style TargetType="GridViewColumnHeader">
<Setter Property="Visibility" Value="Collapsed" />
</Style>
</GridView.ColumnHeaderContainerStyle>
<GridView.Columns>
<GridViewColumn>
<GridViewColumn.CellTemplate>
<DataTemplate>
<TextBlock Text="{Binding SomeLabelText}" />
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
<GridViewColumn>
<GridViewColumn.CellTemplate>
<DataTemplate>
<TextBox Text="{Binding SomeInputText}" />
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
<GridViewColumn>
<GridViewColumn.CellTemplate>
<DataTemplate>
<Button Content="{Binding SomeButtonLabel}" />
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
</GridView.Columns>
</GridView>
</ListView.View>
I have to add two columns in a ListView. One column shows different Images and another column is used to show a Button.
It will be great help if anybody provide the any link or example source code.
Thanks in advance.
This would give you two columns one with a button one with an image. if i was doing it i would put a command on my item so i could bind my button to it.
<ListView
Name="myListView">
<ListView.View>
<GridView>
<GridViewColumn>
<GridViewColumn.CellTemplate>
<DataTemplate>
<Button
Content="Click Me"
Margin="0"
VerticalAlignment="Center"
Click="Button_Click" />
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
<GridViewColumn>
<GridViewColumn.CellTemplate>
<DataTemplate>
<Image
Source="{Binding ImageSource}" />
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
</GridView>
</ListView.View>
</ListView>
You would need to have an items source containing items that have a property called ImageSource