I have this ComboBox in my Silverlight UserControl:
<ComboBox
AutomationProperties.AutomationId="cmbProjects"
Grid.Row="0"
Grid.Column="2"
ItemsSource="{Binding Projects}"
SelectedItem="{Binding SelectedProject, Mode=TwoWay}"
Style="{StaticResource DefaultComboBoxStyle}"
>
<ComboBox.ItemTemplate>
<DataTemplate>
<StackPanel>
<StackPanel Orientation="Horizontal" HorizontalAlignment="Stretch">
<TextBlock Foreground="DarkRed" AutomationProperties.AutomationId="{Binding Number}" Width="100" Margin="0" Text="{Binding Number, Converter={StaticResource StringFormatter},ConverterParameter='\{0\}'}" />
<TextBlock AutomationProperties.AutomationId="{Binding Description}" Text="{Binding Description, Converter={StaticResource StringFormatter},ConverterParameter='\{0\} '}" />
</StackPanel>
</StackPanel>
</DataTemplate>
</ComboBox.ItemTemplate>
</ComboBox>
The lenghth of most of the items populating the combobox exceeds the width of the control. When I dropdown the list, the dropdown expands, but not fully to the width of the item content, resulting in content that is clipped a horizontal scrollbar. This does not happen with exact same combobox where content is within the original width of the control.
In WPF, I could simply set the width of the item container to auto; in Silverlight this results in a catastrophic error. I can set the with to a huge number, but the scroll still appears, regardless of the width. Also, in Silverlight 2 beta 2 there was a property DropDownWidth, with one of the options being "Auto", which I don't see in RTM.
I can get around this with a bit of trickery, mainly hiding the horizontal scrollbar and appending a bunch of characters so that the dropdown fully expand to show the item content. Obviously, this hack not ideal. Did anyone experience similar problem? Is there something that I'm missing to force the combobox to expand fully without a scrollbar?
ib.
It appears that they fixed it in SL3.
If you want to tweak the PopUp, you can do that from within the ComboBox's Control Template. In Blend follow these steps:
Right Click on ComboBox
Select "Edit Control Parts (Template)"
Select "Edit a Copy"
This will copy the out of the box control style & template so that you can tweak that ScrollViewer inside the ComboBox's PopUp to your heart's content.
You may want to try the solution I describe here. It details how to ensure that the combobox pop-up's height and width are updated when items are added or removed.
You can use MaxDropDownHeight property of ComboBox control.
Related
I can't find any way to increase the spacing between each radio button to match the format of my interface
this is my XAML code for the radio button
<dxe:ListBoxEdit Name="xrbSplitFreight" Grid.Row="1" Grid.RowSpan="5" FontWeight="Bold" Grid.Column="8" Height="143" VerticalAlignment="center" Width="218" HorizontalAlignment="Left" Grid.ColumnSpan="3" ShowBorder="False" Margin="0,0,0,7">
<dxe:ListBoxEdit.StyleSettings>
<dxe:RadioListBoxEditStyleSettings />
</dxe:ListBoxEdit.StyleSettings>
and this is how im populating the buttons
private void InitSources()
{
List<String> source = new List<String>();
source.Add("Split Freight");
source.Add("Print Comment");
source.Add("Do Not Split Freight");
xrbSplitFreight.ItemsSource = source;
}
I have tried numerous properties like padding and margin properties and it doesn't change the spacing.
If I understand you correctly, what you want is to increase the space between each radiobox and its text so it matches the space between the checkbox and its text above.
The problem here is that the radiobox content does not have a margin property to move it independently from the radiobox. Luckily in WPF you can encapsulate almost every control in any other control. So the solution, instead of using simple text, is to use a control that can display text and has a margin property like this:
<RadioButton GroupName="GroupName">
<RadioButton.Content>
<TextBlock Text="Option 1" Margin="5 0 0 0"/>
</RadioButton.Content>
</RadioButton>
Try using Margin to add space between controls.
<RadioButton Margin="5"></RadioButton>
or
<RadioButton Margin="5,0,5,0"></RadioButton>
EDIT
Check this out.
<ListBox ItemsSource="MyList">
<ListBox.ItemTemplate>
<DataTemplate>
<RadioButton Margin="10" Content="{Binding Value}"/>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
Each RadioButton is separated with margin given.
I think the problem is You're trying to place radio buttons inside of ListBox. Have You tried putting them into StackPanel with vertical orientation property? If You'll try You'll probably be able to set margins between them.
I have created a few text boxes that have to be added as children to my DockPanel. I have given this DockPanel a name and then when I try in my code to use this name, Intellisense does not give me any results. How do I select DockPanel and then add its children?
I want to select it and add some text boxes to it as its children. For example: nameLocationPanel.Children.Add(new TextBox());
This is the top part of my XAML code that contains the DockPanel. It already has some text boxes, but I want to add more in my C# code.
<ListBox ItemContainerStyle="{StaticResource lbStyle}" Name="searchList" BorderBrush="#FF898989" BorderThickness="2" MouseUp="searchList_MouseUp" MouseDoubleClick="searchList_MouseDoubleClick" Visibility="Visible">
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel>
<DockPanel Name="nameLocationPanel">
<TextBlock FontSize="14" HorizontalAlignment="Left" Text="{Binding Path=FirstName}"/>
<TextBlock FontSize="14" HorizontalAlignment="Left" Text=" "/>
<TextBlock FontSize="14" HorizontalAlignment="Left" Text="{Binding Path=LastName}"/>
<TextBlock HorizontalAlignment="Right" Text="{Binding Path=Location}"/>
</DockPanel>
It is within a DataTemplate, you can't select it by name at all as it doesn't exist in your Window, it's just a Template definition that will get repeated so there isn't 1 dockpanel but N, N being equal to how many items there are in your listbox and there could well be 0 dockpanels.
What exactly are you trying to achieve? Odds are you're going about it backward.
You cannot access to the DockPanel because it is a part of a DataTemplate. It is generated for every item in your ListBox so it is impossible to access to a single instance of it.
To add additional items to the DockPanel it is necessary to do it via something like a binding in XAML or a special UserControl. But it depend always on the ListBoxItem.
I'm working on a project (for Windows Phone 8 with Visual Studio 2012 with C#) where I want to display some items that each have:
a picture
a title
a description
to be able to be clicked (so that I can navigate to a certain Page)
So I thought I could do that with a stackpanel. But I'm not sure how I can add items that have the above properties and to be able to add those items from XAML. I tired adding items through a ItemsControl in stackpanel but I'm not sure how I can add more complex items like the one I want.
The best approach is to use a ListBox or LongListSelector rather than a StackPanel. You can then:
Data bind the list to the control itself, which will handle adding/deleting items from the control automatically
Define the view for each control using ListBox's ItemTemplate property
First of all, in your code-behind/ViewModel/what-have-you, you'll want to create an ObservableCollection of objects to display. ObservableCollection will let the control know to update in the case an item is added, removed, etc.
public ObservableCollection<T> foo = new ObservableCollection<T>();
In XAML, you'll then want to databind this ObservableCollection to the ListBox you've created:
<ListBox x:Name="ListBox" ItemsSource="{Binding foo}" />
Finally, you can define the ItemTemplate of the ListBox like so:
<ListBox x:Name="ListBox" ItemsSource="{Binding foo}" >
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal" Margin="2">
<TextBlock Text="{Binding Title}" />
<TextBlock Text="{Binding Description}" />
<Image Source="{Binding Image}" />
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
I'd highly recommend reading this guide, especially "Binding a control to a collection of objects" and the section after on DataTemplates. :)
I'm sure this is simple, but I just can't seem to figure it out. Basically, I'm trying to force ListBoxItem from allowing itself to go outside of ListBox width. For example, let's say we have a crude ListBox with a TextBox for each ListBoxItem:
<ListBox HorizontalContentAlignment="Stretch">
<ListBoxItem>
<TextBox TextWrapping="Wrap"/>
</ListBoxItem>
<ListBoxItem>
<TextBox TextWrapping="Wrap"/>
</ListBoxItem>
<ListBoxItem>
<TextBox TextWrapping="Wrap"/>
</ListBoxItem>
</ListBox>
If you were to type in them, the text, eventhough it has TextWrapping set to Wrap, will continue flowing to the right, as the width of the ListBoxItem and the ListBox adjust to the width of the content (note that the HorizontalScrollBar appears):
I'm sure this is an intended behavior and is probably caused by the ScrollViewer within the template, but I want the text to wrap and be contained within the original width. I can solve this by setting a static width, but it would be a sketchy design decision and not something I want to do (it would restrict things from being re-sized easily).
Basically, the behavior I'm seeking is that of an ItemsControl:
<ItemsControl>
<TextBox TextWrapping="Wrap"/>
<TextBox TextWrapping="Wrap"/>
<TextBox TextWrapping="Wrap"/>
</ItemsControl>
I just want to keep the ListBox control because of its other behaviors, which I need. Any ideas?
This will disable the horizontal scrolling (even though it sounds like it's only disabling visibility):
<ListBox HorizontalContentAlignment="Stretch"
ScrollViewer.HorizontalScrollBarVisibility="Disabled">
I have a list view that will contain notes that I input. I am having trouble figuring out how to have the list view item look how I want it to.
Below is how it should look:
And this is what it currently looks like:
How do I write the list view item in XAML so that the Date and time appear to the very top-right of each list view item, with the text of the note to the left?
<ListView x:Name="list" ItemsSource="{Binding Note}" BorderBrush="{x:Null}" BorderThickness="0">
<DataTemplate>
<ListViewItem>
<StackPanel Orientation="Horizontal">
</StackPanel>
</ListViewItem>
</DataTemplate>
</ListView>
Any help at all is much appreciated!
You are missing a number of elements required in order to get your screen to look the way you want.
You need to define the ItemTemplate for the ListView. You're on the right track here, it is a DataTemplate declared in XAML, you just have to apply it to the ListView.ItemTemplate property.
You need to set the HorizontalContentAlignment of the ListView to Stretch (the default is Left, which means your items will not fill the entire content area).
You need to use a DockPanel (or other similar panel) inside your DataTemplate to place your date content on the right, and the remainder of your content on the left.
You need to disable Horizontal Scrolling (ScrollViewer.HorizontalScrollBarVisbility) on the ListView in order to make your content wrap (otherwise it will just happily draw it all on one line).
I've included a sample ListView that should get you started.
<ListView
ItemsSource="{Binding Items}"
HorizontalContentAlignment="Stretch"
ScrollViewer.HorizontalScrollBarVisibility="Disabled">
<ListView.ItemTemplate>
<DataTemplate>
<DockPanel>
<TextBlock
TextWrapping="Wrap"
Text="{Binding Date}"
Background="Magenta"
DockPanel.Dock="Right" />
<TextBlock Text="{Binding Content}" Background="Lime" />
</DockPanel>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>