Im trying to define a dataTemplate for a business object in my wpf application a collection of which is being bound to a ListBox.
<UserControl.Resources>
<DataTemplate x:Key="ResizedItemsDataTemplate" DataType="{x:Type resizer:ResizeMonitorItem}">
<Border x:Name="bdr" BorderBrush="Blue"
BorderThickness="1"
CornerRadius="2"
Width="auto"
HorizontalAlignment="Stretch"
VerticalAlignment="Stretch">
<Grid Margin="2">
<Grid.RowDefinitions>
<RowDefinition Height="14"></RowDefinition>
<RowDefinition Height="14"></RowDefinition>
</Grid.RowDefinitions>
<TextBlock Grid.Row="0" Text="{Binding SaveAsFileName}"></TextBlock>
<TextBlock Grid.Row="1" Text="{Binding ResizedImageFilePath}"></TextBlock>
</Grid>
</Border>
</DataTemplate>
</UserControl.Resources>
<Grid VerticalAlignment="Stretch" HorizontalAlignment="Stretch" Margin="0">
<Border BorderThickness="0,0,0,5" BorderBrush="DarkGray" >
<ListBox x:Name="ListBoxResizeItems" ItemsSource="{Binding Path=ResizeItems}" BorderThickness="0" ItemTemplate="{DynamicResource ResizedItemsDataTemplate}">
</ListBox>
</Border>
</Grid>
How can I get the border defined with x:Name=bdr to span the full width of each listbox item? At the moment it only spans the with of the textblocks inside it which dont neccessary fill the full width of the listboxitem and also vary for each listboxitem.
This is probably more to do with the ListBoxItems themselves not taking up the full width of the ListBox. Add the HorizontalContentAlignment="Stretch" attribute to your ListBox and see if it stretches the individual items to fill the width.
Worked it out. The trick is to set the HorizontalContentAlignment="Stretch" on your listbox to make its contents stretch the full width rather than fit the contents only.
<ListBox x:Name="ListBoxResizeItems"
HorizontalContentAlignment="Stretch"
ItemsSource="{Binding Path=ResizeItems}"
BorderThickness="0"
ItemTemplate="{DynamicResource ResizedItemsDataTemplate}" >
</ListBox>
Sorry Matt, just got your answer thorugh as I was typing this post.
HorizontalContentAlignment is a nice, clean solution compared to what I was trying. Thanks!
Here's what ALMOST worked, but sometimes made a dialog box animated itself wider and wider forever:
Width="{Binding ActualWidth,
RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type ListBox}}}"
Related
I have the following StackPanel inside a ScrollViewer that shows User Control elements Whenever a specific event occurs:
Note: many UserControls might appear in the StackPanel that's why I added a Scrollviewer
<ScrollViewer
VerticalScrollBarVisibility="Auto"
Grid.Row="2"
CanContentScroll="True"
Grid.ColumnSpan="2">
<StackPanel Orientation="Vertical">
<ItemsControl ItemsSource="{Binding UserControls}">
<ItemsControl.ItemTemplate>
<DataTemplate>
<views:UserControl/>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
</StackPanel>
</ScrollViewer>
Although, the StackPanel is still going out of range and the scroll bars doesn't show and doesn't work!
I tried fixing the height of both the StackPanel and the ItemsControl but it does't seem to work either...
Window Layout containing the ScrollViewer:
<Grid Margin="0,15,0,0">
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<Label
Content="This is a Label"
HorizontalAlignment="Left"
VerticalAlignment="Top"
Margin="5,5,0,0"
FontSize="15"
Grid.Row="0" Grid.ColumnSpan="2">
</Label>
<StackPanel Grid.Row="1" Orientation="Horizontal" Grid.ColumnSpan="2">
<ComboBox
ItemsSource="{Binding Something}"
Text="Confirm with..."
SelectedItem="{Binding Something}"/>
<Button
HorizontalAlignment="Left"
Margin="5"
Content="Add new UserControl"
Command="{Binding Path=AddUserControl}"/>
</StackPanel>
<ScrollViewer
VerticalScrollBarVisibility="Auto"
Grid.Row="2"
CanContentScroll="True"
HorizontalScrollBarVisibility="Auto">
<StackPanel Orientation="Vertical">
<ItemsControl ItemsSource="{Binding UserControls}" Height="300">
<ItemsControl.ItemTemplate>
<DataTemplate>
<views:UserControl/>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
</StackPanel>
</ScrollViewer>
</Grid>
Here's my UserControl that is added to the StackPanel Inside the ScrollViewer:
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<StackPanel
Orientation="Horizontal"
Grid.Row="0">
<Button
Name="DeleteFilter"
HorizontalAlignment="Left"
Margin="5"
Content="-"/>
<ComboBox
Margin="5"
IsEditable="False"
IsReadOnly="True"
Width="150"
ItemsSource="{Binding SomeObject}"
DisplayMemberPath="Name"
SelectedItem="{Binding SomeObjectProperty}"/>
<ComboBox
Margin="5"
IsEditable="False"
IsReadOnly="True"
Width="150"
ItemsSource="{Binding AnotherObject}"
DisplayMemberPath="Name"
SelectedItem="{Binding AnotherObjectProperty}"/>
<TextBox
x:Name="Value"
Text="{Binding TextBoxValueString}"
TextAlignment="Center"
Width="100"
Margin="5"
Visibility="{Binding TextBoxVisibility}"/>
</StackPanel>
</Grid>
I'm new to XAML and WPF.
Any Suggestions?
ScrollViewers and StackPanel don't work well together. This is because a StackPanel measures its child elements with infinite horizontal space if its Orientation property is set to Horizontal and infinite vertical space if it is set to Vertical. Please refer to my answer here for more information:
How to scroll the datagrid in stackpanel?
So you should replace the StackPanel with another Panel or remove it altogether:
<ScrollViewer
VerticalScrollBarVisibility="Auto"
Grid.Row="2"
CanContentScroll="True"
HorizontalScrollBarVisibility="Auto">
<ItemsControl ItemsSource="{Binding UserControls}" Height="300">
<ItemsControl.ItemTemplate>
<DataTemplate>
<views:UserControl/>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
</ScrollViewer>
I was able to get it run with this setting:
<ScrollViewer HorizontalScrollBarVisibility="Disabled"
VerticalScrollBarVisibility="Auto"
Grid.RowSpan="10">
<StackPanel Orientation="Vertical"
Grid.RowSpan="6"
Name="SPanel"
Margin="0,0,-0.4,1.4"
CanVerticallyScroll="True">
<Border BorderBrush="Black"
BorderThickness="1"
Margin="3"
Grid.Row="0"
Name="ChartHolder0">
<dvc:Chart Cursor="Cross"
Background="#FFFFFCF2" />
</Border>
<Border BorderBrush="Black"
BorderThickness="1"
Margin="3"
Grid.Row="0"
Name="ChartHolder0">
<dvc:Chart Cursor="Cross"
Background="#FFFFFCF2" />
</Border>
<Border BorderBrush="Black"
BorderThickness="1"
Margin="3"
Grid.Row="0"
Name="ChartHolder0">
<dvc:Chart Cursor="Cross"
Background="#FFFFFCF2">
</dvc:Chart>
</Border>
</StackPanel>
</ScrollViewer>
And this is what I get:
Was looking for a fix for this problem and Mishka's answer worked for me.
I don't have enough reputation to comment on an answer, but wanted to say that Background="White" fix from Mishka does work for me on Silverlight (didn't try WPF).
<ScrollViewer Background="White">
<StackPanel Margin="5" Background="White">
Works, if I only put Background on the StackPanel the 5 pixel Margin on the stackpanel doesn't scroll. If I don't put Background on either then both the 5 pixel margin and any margins on controls inside the stackpanel dont scroll.
You are missing a Background for either the StackPanel or ItemsControl(Your choise).
Default Background is Null.
With Background Null, the ScrollViewer doesn't get mouse events for the mouse wheel,
and doesn't scroll.
Im having trouble getting my xaml to work the way i want to.
What i want to is this.
My ItemsControl should have a height of 70. The rest of the space should be filled with a DockPanel.
Inside the DockPanel i have a GridControl (DataGrid from DevExpress) that are supposed to fill all empty space. The gridcontrol is docked to top. Below the gridcontrol but still insdie the dockpanel, i have a Expander that have a maxheight of 480, this should be docked to the bottom.
The problem im having is that i can't get the gridcontrol to dynamically change it's height so that it fills all remaining space between the top of the docking panel down to the Expander.
What am i doing wrong?
<Grid Background="White">
<Grid.RowDefinitions>
<RowDefinition Height="70" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
</Grid.ColumnDefinitions>
<!--#region ItemControl-->
<ItemsControl
Grid.Row="0"
Grid.ColumnSpan="9"
HorizontalAlignment="Stretch"
IsTabStop="False"
ItemsSource="{Binding Path=ToolbarControlViewModel.CommandButtonList}"
Style="{DynamicResource ActionBarPanel}">
<ItemsControl.ItemsPanel>
...
</ItemsControl.ItemsPanel>
<ItemsControl.ItemTemplate>
<DataTemplate>
...
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
<!--#endregion-->
<DockPanel Grid.Row="1">
<!--#region Listview-->
<dxg:GridControl
x:Name="CMGrid"
DockPanel.Dock="Top"
Margin="0,0,0,10"
ItemsSource="{Binding Path=CustomerManagementListViewModel.Customers}"
ScrollViewer.VerticalScrollBarVisibility="Visible">
<dxg:GridControl.Columns>
...
</dxg:GridControl.Columns>
<dxg:GridControl.View>
<dxg:TableView
x:Name="CustomerListView"
AllowBestFit="True"
FocusedRow="{Binding Path=CustomerManagementListViewModel.SelectedCustomer, Mode=TwoWay}"
IsColumnMenuEnabled="False"
NavigationStyle="Row"
ShowGroupPanel="False"
AutoWidth="True"/>
</dxg:GridControl.View>
</dxg:GridControl>
<!--#endregion-->
<!--#region Controls-->
<Expander
MaxHeight="480"
VerticalContentAlignment="Stretch"
DockPanel.Dock="Bottom"
Header="{T:Translate Equipment,
Format=' {0}:'}"
IsExpanded="True"
Style="{StaticResource K2M_Epander_Base}" VerticalAlignment="Bottom">
<Expander.Content>
<Grid>
...
</Grid>
</Expander.Content>
</Expander>
<!--#endregion-->
</DockPanel>
I feel bad getting points for such a quickie but if the question's going to remain I guess we may as well give some closure for future finders.
So, DockPanel has its uses but in this scenario it's your culprit. As a DockPanel nested in a layout as such is basically the equivalent of attaching the VerticalAlignment="Top" property to your GridControl. Which interprets as it only consuming the space necessary for it from the top down of the parent row.
By removing the DockPanel entirely (since in this scenario it's redundant) and applying the Row declaration directly to the GridControl it has the ability to act as a normal child to the parent Grid container and will consume the space provided by the Row's * declaration.
Glad you got it sorted, got to love the quick 'n easy ones. Cheers :)
I have a textbox in my visual tree as follows..
Window
Grid
ListBox
ItemTemplate
DataTemplate
Grid
Grid
Textbox...
The textbox is defined as..
<TextBox Height="Auto"
Text="{Binding Path=LyricsForDisplay}"
MinHeight="50"
MaxHeight="400"
Visibility="Visible"
VerticalScrollBarVisibility="Auto"
IsReadOnly="True"
AllowDrop="False"
TextWrapping="WrapWithOverflow">
</TextBox>
When long text is added to the bound variable (LyricsForDisplay) all of the items in the listbox expand their textboxes/grids width's to allow for the entire string to be seen if you use the scrollbar on bottom that appears...
What I would like to do is make it so the boxes/grids only resize if the user stretches the window .. NOT when a long text is entered (it could just wrap around..)
Does anyone know how to obtain the functionality?
The following works:
<ListBox Name="ListBox1"
ScrollViewer.HorizontalScrollBarVisibility="Disabled">
<ListBox.ItemTemplate>
<DataTemplate>
<Grid>
<Grid>
<TextBox TextWrapping="Wrap"></TextBox>
</Grid>
</Grid>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
Notice the use of ScrollViewer.HorizontalScrollBarVisibility="Disabled" and TextWrapping="Wrap".
Unfortunately, the regular TextBox doesn't allow autoresize to fit the parent but NOT autoresize when the text doesn't fit.
To solve this problem, you can use a custom TextBox that reports a desired (0, 0) size. It's an ugly hack, but it works.
In your .xaml.cs file:
public class TextBoxThatDoesntResizeWithText : TextBox
{
protected override Size MeasureOverride(Size constraint)
{
return new Size(0, 0);
}
}
Then, in your .xaml file:
<Window x:Class="YourNamespace.YourWindow"
...
xmlns:local="clr-namespace:YourNamespace">
...
<local:TextBoxThatDoesntResizeWithText Height="Auto"
Text="{Binding Path=LyricsForDisplay}"
MinHeight="50"
MaxHeight="400"
Visibility="Visible"
VerticalScrollBarVisibility="Auto"
IsReadOnly="True"
AllowDrop="False"
TextWrapping="WrapWithOverflow">
</local:TextBoxThatDoesntResizeWithText>
...
</Window>
Something needs to contrain the horizontal width available to the TextBoxes, in this case you want to stop the ListBox from growing horizontally indefinitely:
<ListBox HorizontalScrollBarVisibility="Disabled"
two change the code:
1- add border tag with your grid.column and grid.row size that you are neads.
2- width and height of textbox set to it.
sample:
<Border x:Name="b" Margin="5"/>
<TextBox Height="Auto"
Text="{Binding Path=LyricsForDisplay}"
MinHeight="50"
Width="{Binding ActualWidth, ElementName=b}"
Height="{Binding ActualHeight, ElementName=b}"
Visibility="Visible"
VerticalScrollBarVisibility="Auto"
IsReadOnly="True"
AllowDrop="False"
TextWrapping="Wrap">
</TextBox>
Try setting the the MaxWidth Property in Your Textbox
<TextBox Height="Auto" Text="{Binding Path=LyricsForDisplay}" MinHeight="50" MaxHeight="400" Visibility="Visible" VerticalScrollBarVisibility="Auto" MaxWidth="100" IsReadOnly="True" AllowDrop="False" TextWrapping="WrapWithOverflow"> </TextBox>
I have a ItemControl in silverlight 4 with a Canvas as a ItemPanel, the idea is to simulate a canvas area with drag and dop items.
ItemsControl has a ItemTemplate with a image and one button.
The idea is that when the button of itemTemplate Click the itemTemplate change.
Some of my code:
(Items Control)
<ItemsControl ItemsSource="{Binding Devices}"
ItemTemplate="{StaticResource deviceItemTemplate}">
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<Canvas
HorizontalAlignment="Stretch" VerticalAlignment="Stretch"
MouseLeftButtonDown="Canvas_MouseLeftButtonDown"
MouseMove="Canvas_MouseMove"
LostMouseCapture="Canvas_LostMouseCapture"></Canvas>
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
</ItemsControl>
(ItemTemplate)
<DataTemplate x:Key="deviceItemTemplate">
<ContentControl>
<Grid IsHitTestVisible="True" Background="Transparent">
<Grid.RowDefinitions>
<RowDefinition></RowDefinition>
<RowDefinition Height="30"></RowDefinition>
</Grid.RowDefinitions>
<Image IsHitTestVisible="False" Grid.Row="0" Stretch="UniformToFill"
Width="50" Height="50"
Source="{Binding ImagePath}"/>
<Button Grid.Row="1" Content="{Binding EditarDispositivoCommand.DisplayName}" Command="{Binding EditarDispositivoCommand.Command}"></Button>
</Grid>
<ContentControl.RenderTransform>
<TranslateTransform X="{Binding X, Mode=TwoWay}" Y="{Binding Y, Mode=TwoWay}"></TranslateTransform>
</ContentControl.RenderTransform>
</ContentControl>
</DataTemplate>
I try to get that when a button in a itemTemplate is clicked the template of this item change to other template from resource.
Was that possible or i taking a bad way. Thanks a lot.
You could try using a DataTemplateSelector for Silverlight - it's not built in like WPF, but it can be achieved with some extra code.
Here is a good example from CodeProject:
http://www.codeproject.com/KB/silverlight/SLTemplateSelector.aspx
Just add an element to you view model to specify the template...
I just used the following article to do what you suggested.
I have two item templates defined for a view and can progamatically change the item template at runtime though codebehind
http://weblogs.asp.net/psheriff/archive/2010/08/25/change-templates-dynamically-in-silverlight.aspx
Hope this helps
(Sample also uses a button to change the item template)
I got a TreeView and want to display the Data nested (not hierarchically). The first level data is called TaskViewModel, the second level data is ArtifactViewModel. I want the ArtifactViewModel horizontal inside a GroupBox which represents TaskViewModel.
I tried different approaches, this is my last one:
<TreeView Name="tvTasks" ItemsSource="{Binding Tasks}">
<TreeView.Resources>
<HierarchicalDataTemplate DataType="{x:Type vm:TaskViewModel}">
<GroupBox Header="{Binding Name, UpdateSourceTrigger=PropertyChanged}">
<StackPanel Orientation="Vertical">
<ListView ItemsSource="{Binding Children}"/>
<TextBlock Text="{Binding Description, UpdateSourceTrigger=PropertyChanged}" TextWrapping="Wrap"/>
</StackPanel>
</GroupBox>
</HierarchicalDataTemplate>
<DataTemplate DataType="{x:Type vm:ArtifactViewModel}">
<Border Background="{Binding Type,Converter={StaticResource Type2Background}}"
Margin="5" BorderBrush="Black" BorderThickness="2" CornerRadius="2">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="80"/>
<RowDefinition Height="20"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="100"/>
</Grid.ColumnDefinitions>
<TextBlock Text="{Binding Name, UpdateSourceTrigger=PropertyChanged}"
TextAlignment="Center" Background="Black" Foreground="White"
Opacity="0.75" Grid.Column="0" Grid.Row="1"/>
</Grid>
</Border>
</DataTemplate>
</TreeView.Resources>
</TreeView>
This looks pretty much like what i want, besides that ArtifactViewModels are shown vertical. And if i click on ArtifactViewModel the tvTasks.SelectedItem doesn't change, because the ListView handels this event. I know that this approach is not the cleverest, but it's just a try.
I looked at this article, but i don't see how to deal with the different objects i want to put in the TreeView. So ... how do i build such a UI?
The main issue you're running into here is that you're nesting multiple controls, each with their own selected items.
If you're planning on showing the data as nested but not hierarchically, don't bother using TreeView. If you want to have one item be selectable at any given point in time, use a ListBox instead.
Now the tricky part is playing around with how you want to lay the items out. Take a look at Bea Stollnitz's example here where she redraws a ListBox as a Canvas. You could do something similar where the ItemsPanelTemplate is a Canvas, and you calculate the x,y coordinates. Alternately, you could use a Grid, and determine the Grid.Row and Grid.Column values.