In expression blend I created a sample data source in visual editor. In case of using a listbox I simply drag the collection there and data is automatically shown.
Now, I am interested to retrieve data from datasource from code behind. Is this possible?
There are a couple ways to do this, I will give you the simplest. I have a ListPicker that is bascially the same as a ListBox: Here is my ListPicker markup: Also here is a link
<toolkit:ListPicker Name="lpDrag" Grid.Row="4" Grid.Column="1" Loaded="lptest_Loaded" SelectedIndex="0">
<toolkit:ListPicker.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<TextBlock Text="{Binding name}" />
</StackPanel>
</DataTemplate>
</toolkit:ListPicker.ItemTemplate>
<toolkit:ListPicker.FullModeItemTemplate>
<DataTemplate>
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="50" ></ColumnDefinition>
<ColumnDefinition ></ColumnDefinition>
</Grid.ColumnDefinitions>
<TextBlock Text="{Binding name}" FontSize="26" Grid.Column="0" Grid.Row="0"/>
<TextBlock Text="{Binding desc}" TextWrapping="Wrap" FontSize="26" Grid.Column="1" Grid.Row="0" />
</Grid>
</DataTemplate>
</toolkit:ListPicker.FullModeItemTemplate>
</toolkit:ListPicker>
Here is the code behind:
lpDrag.ItemsSource = //Whatever your datasource is
Related
I am using auto complete textbox from windows phone toolkit.I need the list of suggestions below my textbox but it shows up above the text box .How do I make the suggestions appear below the text box..Here is my XAML.
<Grid Margin="0,336,0,189" x:Name="editrow" Visibility="Visible">
<Grid.RowDefinitions>
<RowDefinition Height="auto"></RowDefinition>
<RowDefinition Height="*"></RowDefinition>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="220" ></ColumnDefinition>
<ColumnDefinition Width="100"></ColumnDefinition>
<ColumnDefinition Width="100"></ColumnDefinition>
</Grid.ColumnDefinitions>
<toolkit:AutoCompleteBox x:Name="newname" FilterMode="StartsWith" IsTextCompletionEnabled="True" Foreground="White" Background="#53000000" BorderThickness="0" Grid.Column="0" Grid.Row="0" Margin="10,0,0,0" IsDropDownOpen="True" RenderTransformOrigin="0,0">
<toolkit:AutoCompleteBox.ItemTemplate>
<DataTemplate>
<StackPanel Background="Gray" Orientation="Horizontal">
<TextBlock Text="{Binding }"/>
</StackPanel>
</DataTemplate>
</toolkit:AutoCompleteBox.ItemTemplate>
</toolkit:AutoCompleteBox>
<TextBox x:Name="rowquantity" Foreground="White" Background="#53000000" BorderThickness="0" Grid.Column="1" Grid.Row="0" InputScope="Number"></TextBox>
<toolkit:ListPicker Grid.Row="0" x:Name="units" Foreground="White" BorderThickness="0" Background="#53000000" Grid.Column="2" ExpansionMode="FullScreenOnly" Margin="12,5,0,14" >
<toolkit:ListPicker.FullModeItemTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal" Margin="0 0 0 0">
<TextBlock Text="{Binding}"
FontSize="32" LineHeight="1"/>
</StackPanel>
</DataTemplate>
</toolkit:ListPicker.FullModeItemTemplate>
</toolkit:ListPicker>
<Button Content="Add" BorderBrush="#53000000" Foreground="#53000000" Grid.Column="1" Grid.ColumnSpan="2" Grid.Row="1" HorizontalAlignment="Right" VerticalAlignment="Top" Height="74" Click="Button_Click" Margin="0,0,3,0" Width="158"/>
</Grid>
The location of the popup is determined based on the available size. If there's more space above the AutoCompleteTextBox, it will pop up. You can see this in the popuphelper.cs source file where the code arranges the popup.
There really isn't an option to override the behavior.
I am trying to get some design data in blend expressions for my wp7 app but after a certain point it seems to just lose the data and shows me nothing
As you can see I see nothing in the rectangle error even though there is a hardcoded value in it.
<Grid x:Name="LayoutRoot"
Background="Transparent">
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<!--ContentPanel - place additional content here-->
<Grid x:Name="ContentGrid"
Grid.Row="1">
<ListBox x:Name="lbMovieCollection" ItemsSource="{Binding MovieCollections}">
<ListBox.Resources>
<DataTemplate x:Key="lbMovieCollectionItemTemplate">
<toolkit:ExpanderView x:Name="expMovieCollection" ItemsSource="{Binding Movies}" Header="{Binding Mode=OneWay}" Width="480">
<toolkit:ExpanderView.Resources>
<DataTemplate x:Key="expMovieCollectionHeaderTemplate">
<TextBlock TextWrapping="Wrap" Text="{Binding Name}" Height="50"/>
</DataTemplate>
<DataTemplate x:Key="expMovieCollectionItemTemplate">
<ListBoxItem HorizontalAlignment="Left" toolkit:TiltEffect.IsTiltEnabled="True" d:LayoutOverrides="VerticalAlignment">
<StackPanel Height="61" Width="371" >
<TextBlock TextWrapping="Wrap" Text="THIS IS HARCDOED" FontSize="29.333" />
</StackPanel>
</ListBoxItem>
</DataTemplate>
</toolkit:ExpanderView.Resources>
<toolkit:ExpanderView.ItemTemplate>
<StaticResource ResourceKey="expMovieCollectionItemTemplate"/>
</toolkit:ExpanderView.ItemTemplate>
<toolkit:ExpanderView.HeaderTemplate>
<StaticResource ResourceKey="expMovieCollectionHeaderTemplate"/>
</toolkit:ExpanderView.HeaderTemplate>
</toolkit:ExpanderView>
</DataTemplate>
</ListBox.Resources>
<ListBox.ItemTemplate>
<StaticResource ResourceKey="lbMovieCollectionItemTemplate"/>
</ListBox.ItemTemplate>
</ListBox>
</Grid>
</Grid>
Looks like your "THIS IS HARCDOED" values are hidden inside the collapsed portion of toolkit:ExpanderView control.
Problem solved!
Anyway, I just figured out the problem. I did a .Trim() on the values and surprisingly they can be wrapped. Thanks and sorry for all the trouble. =)
I am doing some data binding to my textblock in a grid.
However, some of the texts are not showing fully.
I tried the Text Wrapping and setting a maximum width to my textblock. But none of them worked.
EDIT : Hi again. I noticed that when I changed the text of the textblock manually via codes like
txtDesc.Text = "This is a job for Stackers. If you like stacking, please contact me.
The text wrapping actually works. So somehow the databind result text can't be wrap?
The XAML code for my textblock.
<TextBlock Name="Description" Grid.Row="4" Text="{Binding Description}" FontSize=" {StaticResource PhoneFontSizeSmall}" Height="auto" Width="220" Margin="0,0,0,0" TextWrapping="Wrap" HorizontalAlignment="Left" VerticalAlignment="Top" MaxWidth="220"></TextBlock>
Any help here?
<!--LayoutRoot is the root grid where all page content is placed-->
<Grid x:Name="LayoutRoot">
<Grid.Background>
<ImageBrush Stretch="Fill" ImageSource="images/SmallLogoNTitle.png"/>
</Grid.Background>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition/>
</Grid.RowDefinitions>
<!--TitlePanel contains the name of the application and page title-->
<StackPanel x:Name="TitlePanel" Grid.Row="0" Margin="12,17,0,28">
<TextBlock x:Name="ApplicationTitle" Style="{StaticResource PhoneTextNormalStyle}"/>
<TextBlock x:Name="PageTitle" Margin="9,-7,0,0" Style="{StaticResource PhoneTextTitle1Style}"/>
</StackPanel>
<!--ContentPanel - place additional content here-->
<Grid x:Name="ContentPanel" Grid.Row="1" Margin="12,0,12,0">
<toolkit:ListPicker ItemsSource="{Binding}" Name="lpkTypeOfService" Margin="0,116,12,0" Height="65" VerticalAlignment="Top" HorizontalAlignment="Right" Width="210" SelectionChanged="lpkTypeOfService_SelectionChanged">
</toolkit:ListPicker>
<ListBox Margin="8,210,8,26" Name="listBox1" Width="450">
<ListBox.ItemTemplate>
<DataTemplate>
<Grid ShowGridLines="True">
<Grid.RowDefinitions>
<RowDefinition Height="50"/>
<RowDefinition Height="50"/>
<RowDefinition Height="30"/>
<RowDefinition Height="30"/>
<RowDefinition Height="auto"/>
<RowDefinition Height="60"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="300"/>
<ColumnDefinition Width="150"/>
</Grid.ColumnDefinitions>
<TextBlock HorizontalAlignment="Left" Grid.Row="0" Grid.Column="0" Name="Date" Text="{Binding Date}" FontSize="{StaticResource PhoneFontSizeLarge}"></TextBlock>
<TextBlock HorizontalAlignment= "Left" Grid.Row="1" Grid.Column="0" Name="Creator" Text="{Binding CreatorID}" FontSize="{StaticResource PhoneFontSizeLarge}"></TextBlock>
<TextBlock Name="Type" Grid.Row="2" Text="{Binding Type}" FontSize="{StaticResource PhoneFontSizeSmall}"></TextBlock>
<TextBlock Name="Amount" Grid.Row="3" Text="{Binding Amount}" FontSize="{StaticResource PhoneFontSizeSmall}"></TextBlock>
<TextBlock Name="Description" Grid.Row="4" Text="{Binding Description}" FontSize="{StaticResource PhoneFontSizeSmall}" Height="auto" Width="220" Margin="0,0,0,0" TextWrapping="Wrap" HorizontalAlignment="Left" VerticalAlignment="Top" MaxWidth="220"></TextBlock>
<Button Content="Apply" Height="70" Width="140" Name="btn1" Click="btn_Click" Grid.Row="5" Grid.Column="1"></Button>
</Grid>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
<TextBlock Height="65" HorizontalAlignment="Left" Margin="12,116,0,0" Name="textBlock1" Text="Find Service :" VerticalAlignment="Top" Width="216" FontSize="36" />
</Grid>
</Grid>
It comes from poor / over-complicated layout architecture and the way your objects are positioning each other. Might try something like this for your DataTemplate
<DataTemplate>
<Grid ShowGridLines="True">
<Grid.RowDefinitions>
<RowDefinition Height="50"/>
<RowDefinition Height="50"/>
<RowDefinition Height="30"/>
<RowDefinition Height="30"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="60"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<!-- Don't worry, you already had your 450 Width set on the parent -->
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<TextBlock Name="Date" Text="{Binding Date}" FontSize="{StaticResource PhoneFontSizeLarge}"/>
<TextBlock Name="Creator" Grid.Row="1" Text="{Binding CreatorID}" FontSize="{StaticResource PhoneFontSizeLarge}"/>
<TextBlock Name="Type" Grid.Row="2" Text="{Binding Type}" FontSize="{StaticResource PhoneFontSizeSmall}"/>
<TextBlock Name="Amount" Grid.Row="3" Text="{Binding Amount}" FontSize="{StaticResource PhoneFontSizeSmall}"/>
<TextBlock Name="Description" Grid.Row="4" Text="{Binding Description}" FontSize="{StaticResource PhoneFontSizeSmall}" TextWrapping="Wrap"/>
<Button Name="btn1" Click="btn_Click" Grid.Row="5" Grid.Column="1" Content="Apply" Height="70" Width="140" Margin="5,0"/>
</Grid>
</DataTemplate>
Also for the sake of cleaner xaml, remember things like Margin="0", Grid.Column="0", HorizontalAlignment="Left" etc. are default dependency properties, so no need to set them to each individual object. Even in the case you need to, you can apply them as Setters to the TargetType in the parent Object.Resources and avoid setting them to each individual object. Another tip would be, don't rely on a bunch of obfuscated random Margins etc to create your layout. It's best to do it right the first time instead of hunting down discrepancies between a bunch of inter-dependent little "fixes"
I didn't test it, but should work fine unless you got something else somewhere pushing stuff around. Hope this helps.
Can you disable horizontal scrolling in your listbox control?
ScrollViewer.HorizontalScrollBarVisibility="Disabled"
Use VerticalAlignment="Stretch" instead of VerticalAlignment="Top". This way the textblock will stretch to the height of the row.
I am using MVVM pattern and I am trying to bind a public ObservableCollection Friends property to LongListSelector
<toolkit:LongListSelector
ItemsSource="{Binding Friends}"
GroupHeaderTemplate="{StaticResource movieGroupHeader}"
ListHeaderTemplate="{StaticResource movieListHeader}">
<toolkit:LongListSelector.ItemTemplate>
<DataTemplate>
<Grid Margin="12,8,0,8">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<StackPanel Grid.Column="1" VerticalAlignment="Top">
<TextBlock Text="{Binding MyBoxName}" Style="{StaticResource PhoneTextLargeStyle}" FontFamily="{StaticResource PhoneFontFamilySemiBold}" Margin="12,-12,12,6"/>
<TextBlock Text="{Binding MyBoxID}" Style="{StaticResource PhoneTextNormalStyle}" TextWrapping="Wrap" FontFamily="{StaticResource PhoneFontFamilySemiBold}"/>
<StackPanel Orientation="Horizontal">
<TextBlock Text="Status:" Style="{StaticResource PhoneTextSmallStyle}"/>
<TextBlock Text="{Binding Status}" Style="{StaticResource PhoneTextSmallStyle}" FontFamily="{StaticResource PhoneFontFamilySemiBold}"/>
</StackPanel>
</StackPanel>
</Grid>
</DataTemplate>
</toolkit:LongListSelector.ItemTemplate>
</toolkit:LongListSelector>
Now issues is when i try to add
_friends.Add(new Model.Friends
{
MyBoxID = e.RosterItem.Jid,
MyBoxName = e.RosterItem.Name,
Status = Matrix.Xmpp.PresenceType.unavailable
})
it gives InvalidCastException so i tried List instead of ObservableCollection. Now i don't get exception but nothing is displayed in LLS. How can i bind My ObservableCollection property to LLS with Grouping.
For LongListSelector you need not just a collection, but some more complex structure to support grouping
Look at LongListCollection. It's great class that should help you
Usage:
var list = new LongListCollection<Event, string>(Events, x => x.Date.ToLongDateString());
I have the following XAML markup in a WP7 UserControl. My problem is that when my ListBox has more items than will fit on a page it will not scroll properly. I can scroll the list by panning upwards with my finger but as soon as I remove my finger it jumps back to the top of the list (if the list is very long then the scrolling will not even work to this limited extent).
I have tried numerous different layouts with no success e.g. Wrapping ListBox in ScrollViewer, utilising StackPanel instead of Grid, removing the WrapPanel and replacing it with a grid.
Other similar questions suggested removing StackPanel (which I did but made no difference) or using ScrollViewer (which did not work).
The Page that hosts the UserControl uses a GestureListener - I removed that and it still made no difference.
<Grid x:Name="LayoutRoot"
Background="SteelBlue">
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<!--<TextBlock Grid.Row="0"
Text="Search"
Style="{StaticResource PhoneTextTitle2Style}" />-->
<Grid Grid.Row="0">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<TextBlock Text="Search Type"
Grid.Column="0"
VerticalAlignment="Center" />
<RadioButton Content="RMB/RSD"
Grid.Column="1"
IsChecked="{Binding Path=SearchType, Converter={StaticResource enumBooleanConverter}, ConverterParameter=RMB, Mode=TwoWay}" />
<RadioButton Content="Name"
Grid.Column="2"
IsChecked="{Binding Path=SearchType, Converter={StaticResource enumBooleanConverter}, ConverterParameter=Name, Mode=TwoWay}" />
</Grid>
<Grid Grid.Row="1">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<TextBlock Text="Search Term"
Grid.Column="0"
VerticalAlignment="Center" />
<TextBox Grid.Column="1"
Text="{Binding SearchTerm, Mode=TwoWay}"
InputScope="{Binding SearchTermInputScope}">
<i:Interaction.Behaviors>
<b:SelectAllOnFocusBehavior />
</i:Interaction.Behaviors>
</TextBox>
</Grid>
<Button Grid.Row="2"
Content="Find"
cmd:ButtonBaseExtensions.Command="{Binding FindDeliveryPointsCommand}" />
<ListBox Grid.Row="3"
ItemsSource="{Binding SearchResults}"
ScrollViewer.VerticalScrollBarVisibility="Auto">
<ListBox.ItemTemplate>
<DataTemplate>
<toolkit:WrapPanel Orientation="Horizontal"
Width="480"
Background="{Binding RMB, Converter={StaticResource alternateColorConverter}}">
<TextBlock Text="{Binding RMB}"
FontSize="26"
Foreground="Navy"
Padding="5"
Width="60" />
<TextBlock Text="{Binding HouseholdName}"
FontSize="26"
Foreground="Navy"
Padding="5"
Width="420" />
<TextBlock Text="{Binding StreetWithRRN}"
FontSize="26"
Foreground="Navy"
Padding="5" />
<TextBlock Text="{Binding Street.Locality.Name}"
FontSize="26"
Foreground="Navy"
Padding="5" />
</toolkit:WrapPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</Grid>
Specify ListBox.Height - something like Height="200". As it is now, ListBox expands automatically to accomodate all loaded items and it grows out of the screen. As a result you get large page with no scroller.
When you add ListBox.Height, the ListBox area won't grow. Instead ListBox ScrollViewer will be activated and you'll get the effect you need.
I use databinding when the ListBox's Height changed depending on the other controls on the page.
<StackPanel x:Name="ContentPanel" Grid.Row="1">
<ListBox x:Name="LstSample" Height="{Binding ElementName=ContentPanel, Path=ActualHeight}">
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<Image Source="{Binding ImagePath}" Stretch="None"/>
<StackPanel Orientation="Vertical">
<TextBlock Text="{Binding Name}" FontSize="45"/>
<TextBlock Text="{Binding Group}" FontSize="25"/>
</StackPanel>
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</StackPanel>