Develop Reference

How to use a Grid inside a WPF ItemControl

I've a WPF page where I need to display things in a form of a grid.
I've a number row that are dynamic and I will have different template depending on the type of object.
I've tried to put my headers in grid with SharedSIzeGroup specified, and then having each of my item in an individual grid with the same SharedSizeGroup name.
It doesn't seems to work, my header and each values are not shared at all :(
<StackPanel Orientation="Vertical">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" SharedSizeGroup="A"/>
<ColumnDefinition Width="Auto" SharedSizeGroup="B"/>
<ColumnDefinition Width="Auto" SharedSizeGroup="C"/>
<ColumnDefinition Width="Auto" SharedSizeGroup="D"/>
<ColumnDefinition Width="Auto" SharedSizeGroup="E"/>
<ColumnDefinition Width="Auto" SharedSizeGroup="F"/>
</Grid.ColumnDefinitions>
<TextBlock Grid.Column="0" Text="Title1" FontWeight="Bold" />
<TextBlock Grid.Column="1" Text="Title2" FontWeight="Bold" />
<TextBlock Grid.Column="2" Text="Title3" FontWeight="Bold" />
<TextBlock Grid.Column="3" Text="Title4" FontWeight="Bold" />
<TextBlock Grid.Column="4" Text="Title5" FontWeight="Bold" />
</Grid>
<ItemsControl ItemsSource="{Binding LoggingRule.MachineStateLogging}">
<ItemsControl.ItemTemplate>
<DataTemplate>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" SharedSizeGroup="A"/>
<ColumnDefinition Width="Auto" SharedSizeGroup="B"/>
<ColumnDefinition Width="Auto" SharedSizeGroup="C"/>
<ColumnDefinition Width="Auto" SharedSizeGroup="D"/>
<ColumnDefinition Width="Auto" SharedSizeGroup="E"/>
<ColumnDefinition Width="Auto" SharedSizeGroup="F"/>
</Grid.ColumnDefinitions>
<TextBlock Text="Some text" Grid.Column="0"/>
<TextBlock Text="Some text" Grid.Column="1"/>
<TextBlock Text="Some text" Grid.Column="2"/>
<TextBlock Text="Some text" Grid.Column="3"/>
<TextBlock Text="Some text" Grid.Column="4"/>
</Grid>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
</StackPanel>
Is this something possible?

WPF DataTemplate - Access Property of Parent object

I am customizing the presentation using the HeaderTemplate of a UI item. I would like to access a property of the parent item in the DataTemplate:
<dxa:AccordionItem Header="{Binding SelectedComponents.Count}" Tag="Test" HighlightOnHover="False" HighlightOnPress="False" Margin="0,0,13,0">
<dxa:AccordionItem.HeaderTemplate>
<DataTemplate>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="30"/>
<RowDefinition Height="1"/>
</Grid.RowDefinitions>
<TextBlock Text="{Binding RelativeSource=Tag}" VerticalAlignment="Center" />
<TextBlock Text="{Binding}" Grid.Column="2" Grid.Row="0" VerticalAlignment="Center" HorizontalAlignment="Center"/>
<Rectangle Grid.Column="0" Grid.Row="1" Grid.ColumnSpan="3" HorizontalAlignment="Stretch" VerticalAlignment="Center" Fill="DimGray" Height="1"/>
</Grid>
</DataTemplate>
</dxa:AccordionItem.HeaderTemplate>
</dxa:AccordionItem>
Basically, I would like to display the Tag property in the DataTemplate.
I have tried:
Text="{Binding RelativeSource=Tag}"
Text="{Binding Path=Tag}"
Text="{Binding ElementName=Tag}"
but nothing seems to work.

I managed to obtain the neccessary binding using the following method:
Text="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type dxa:AccordionItem}}, Path=Tag}"

Align controls correctly when using ItemsControl in WPF

Can someone tell me how to align and resize controls correctly when using the ItemsControl.
I want to have a description on the left and a TextBox on the right for multiple fields which are defined in an ObservableCollection to end up with something like:
First Name: [FirstNameTextBox]
Last Name: [LastNameTextBox]
Date of Birth: [DobTextBox]
but instead I'm getting this:
First Name: [FirstNameTextBox]
Last Name: [LastNameTextBox]
Date of Birth: [DobTextBox]
I want all the textbox to be aligned based on the largest <TextBlock>. If this was done directly in a <Grid> control, it would be straight forward as all controls are directly in the grid and you would just have the following columns definition defined
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
I thought I could use the SharedSizeGroup property in the <Grid> but it still doesn't resize correctly. Instead it only displays the <TextBlock> stretch across the <Grid>.
Here's my code:
<Grid Grid.IsSharedSizeScope="True" Grid.Row="1">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" SharedSizeGroup="Labels" />
<ColumnDefinition Width="*" SharedSizeGroup="InputControls" />
</Grid.ColumnDefinitions>
<ItemsControl Grid.Row="1" ItemsSource="{Binding SelectedTemplate.Fields}">
<ItemsControl.ItemTemplate>
<DataTemplate>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition SharedSizeGroup="Labels"/>
<ColumnDefinition SharedSizeGroup="InputControls"/>
</Grid.ColumnDefinitions>
<TextBlock Text="{Binding Path=Label}" Grid.Column="0" Margin="5"
VerticalAlignment="Center" Background="Red" />
<TextBox Text="{Binding Path=Value}" Grid.Column="1" Margin="5"
VerticalAlignment="Center" Background="Blue" />
</Grid>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
</Grid>
Any idea how I can resolve this?
Thanks.
UPDATE1: I cannot get this to work as I need it to. This is what I've got so far:
<Grid Grid.Row="1" Background="Purple">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" SharedSizeGroup="Overall" />
</Grid.ColumnDefinitions>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition SharedSizeGroup="Labels" Width="Auto" />
<ColumnDefinition SharedSizeGroup="InputControls" Width="*" />
</Grid.ColumnDefinitions>
<ItemsControl ItemsSource="{Binding SelectedTemplate.Fields}"
Background="Yellow"
Grid.IsSharedSizeScope="True">
<ItemsControl.ItemTemplate>
<DataTemplate>
<Grid Background="Green">
<Grid.ColumnDefinitions>
<ColumnDefinition SharedSizeGroup="Labels"/>
<ColumnDefinition SharedSizeGroup="InputControls"/>
</Grid.ColumnDefinitions>
<TextBlock Text="{Binding Path=Label}"
Grid.Column="0"
Margin="5"
VerticalAlignment="Center"/>
<TextBox Text="{Binding Path=Name}"
Grid.Column="1"
Margin="5"
VerticalAlignment="Center"/>
</Grid>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
</Grid>
This ends up displaying my layout this way:
As you can see, my TextBox are correctly aligned based on the largest TextBlock but my ItemsControls is not stretched all the way across. I guess that makes sense as it is within the same grid where the ColumnDefinitions are defined.
Now, if I move the ColumnDefinitions' out this grid to the outer grid and remove all instances ofGrid.IsSharedSizeScope`, I guess the following:
Which once again is closer to what I need as my ItemsControl is now stretching all the way as I've set its Grid.ColumnSpan="2" and my TextBox are still aligned to the TextBlock and are stretching all the way across but the problem now is that the TextBlock should be smaller as the Column is set to Auto but they appear to behave as if the column was set to * and I guess I'm losing the purpose of using IsSharedSizeScope since it has been removed.
Now if I add IsSharedSizeScope="True" to the outer grid, I get the following result:
Again, this is close to what I want as my ItemsControl is stretched, my textboxes are also stretch but they are no longer aligned to the largest TextBlock.
Finally, if I add Grid.IsSharedSizeScope="True" to ItemsControl as originally suggested by #mm8,
<Grid Grid.Row="1" Background="Purple" Grid.IsSharedSizeScope="True">
<Grid.ColumnDefinitions>
<ColumnDefinition SharedSizeGroup="Labels" Width="Auto" />
<ColumnDefinition SharedSizeGroup="InputControls" Width="*" />
</Grid.ColumnDefinitions>
<Grid Grid.ColumnSpan="2" >
<ItemsControl ItemsSource="{Binding SelectedTemplate.Fields}"
Background="Yellow"
Grid.IsSharedSizeScope="True">
<ItemsControl.ItemTemplate>
<DataTemplate>
<Grid Background="Green">
<Grid.ColumnDefinitions>
<ColumnDefinition SharedSizeGroup="Labels"/>
<ColumnDefinition SharedSizeGroup="InputControls"/>
</Grid.ColumnDefinitions>
<TextBlock Text="{Binding Path=Label}"
Grid.Column="0"
Margin="5"
VerticalAlignment="Center"/>
<TextBox Text="{Binding Path=Name}"
Grid.Column="1"
Margin="5"
VerticalAlignment="Center"/>
</Grid>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
</Grid>
<!--<TextBlock Text="Invoice Number" Grid.Column="0" Margin="5" VerticalAlignment="Center"/>
<TextBox Text="InvoiceNumber" Grid.Column="1" Margin="5" VerticalAlignment="Center"/>-->
</Grid>
I get the following:
Which brings me back to square one, though the definitions are different?
I need to achieve the following:
What am I doing wrong??
Thanks.

Try to set the Grid.IsSharedSizeScope property of the ItemsControl itself:
<ItemsControl Grid.Row="1" ItemsSource="{Binding SelectedBarcodeTemplate.Fields}"
Grid.IsSharedSizeScope="True">
Synchronizing the width of elements in an ItemsControl: https://joshsmithonwpf.wordpress.com/2008/09/06/synchronizing-the-width-of-elements-in-an-itemscontrol/

I eventually found the answer in the following article: WPF Tutorial - Grid Panel under the section: "How to share the width of a column over multiple grids".
As per article:
Columns and rows that participate in size-sharing do not respect Star sizing. In the size-sharing scenario, Star sizing is treated as Auto. Since TextWrapping on TextBlocks within an SharedSize column does not work you can exclude your last column from the shared size. This often helps to resolve the problem.
So my final XAML looks like this:
<Grid Grid.Row="1" Background="Purple" >
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition SharedSizeGroup="Labels" Width="Auto" />
<ColumnDefinition SharedSizeGroup="InputControls" Width="*" />
</Grid.ColumnDefinitions>
</Grid>
<ItemsControl ItemsSource="{Binding SelectedBarcodeTemplate.Fields}"
Background="Yellow"
Grid.IsSharedSizeScope="True">
<ItemsControl.ItemTemplate>
<DataTemplate>
<Grid Background="Green" ShowGridLines="True">
<Grid.ColumnDefinitions>
<ColumnDefinition SharedSizeGroup="Labels"/>
<ColumnDefinition />
</Grid.ColumnDefinitions>
<TextBlock Text="{Binding Path=Label}"
Grid.Column="0"
Margin="5"
VerticalAlignment="Center"/>
<TextBox Text="{Binding Path=Name}"
Grid.Column="1"
Margin="5"
VerticalAlignment="Center"
HorizontalAlignment="Stretch"/>
</Grid>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
</Grid>
And the outcome now finally looks correct:
Hope this helps others!

How to bind Observablecollection<T> with combobox in wpf

I am trying to bind Observablecollection<T> with ComboBox. ComboBox having Datatemplete
<ComboBox Width="150" Margin="20,0,0,5" Name="cbSelection" Height="20"
BorderThickness="2" BorderBrush="Black"
SelectedIndex="0" DataContext="{Binding AdComboBox}">
<ComboBox.ItemTemplate>
<DataTemplate>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="1*"/>
<ColumnDefinition Width="1*"/>
<ColumnDefinition Width="1*"/>
</Grid.ColumnDefinitions>
<TextBlock Grid.Column="0" Text="{Binding XPath=LOC, Mode=OneWay}" Margin="5,0,5,0"/>
<TextBlock Grid.Column="1" Text="{Binding XPath=PUB, Mode=OneWay}" Margin="0,0,5,0"/>
<TextBlock Grid.Column="2" Text="{Binding XPath=EDI, Mode=OneWay}" Margin="0,0,5,0"/>
</Grid>
</DataTemplate>
</ComboBox.ItemTemplate>
</ComboBox>
but not get the data in ComboBox
what going wrong
thanks in advance

Use the ItemsSource of the ComboBox to point to the ObservableCollection<T>. Also: Use Path, not XPath which is used for binding to XML documents.
<ComboBox Width="150" Margin="20,0,0,5" Name="cbSelection" Height="20"
BorderThickness="2" BorderBrush="Black"
ItemsSource="{Binding AdComboBox}"
SelectedIndex="0">
<ComboBox.ItemTemplate>
<DataTemplate>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="1*"/>
<ColumnDefinition Width="1*"/>
<ColumnDefinition Width="1*"/>
</Grid.ColumnDefinitions>
<TextBlock Grid.Column="0"
Text="{Binding Path=LOC, Mode=OneWay}"
Margin="5,0,5,0"/>
<TextBlock Grid.Column="1"
Text="{Binding Path=PUB, Mode=OneWay}"
Margin="0,0,5,0"/>
<TextBlock Grid.Column="2"
Text="{Binding Path=EDI, Mode=OneWay}"
Margin="0,0,5,0"/>
</Grid>
</DataTemplate>
</ComboBox.ItemTemplate>
</ComboBox>
Side note: you might want to rename the collection to something more functional instead of AdComboBox. E.g., Ads Because it is not a ComboBox but it is a collection of Ads(?)

Wpf set all columns to have the same default width

I'm trying to list a lot of items in a grid and i dont want to have to repeat "ColumnDefinition Width=40" from here on to infinity as i will need to add more TextBoxes with bindings.
Is there any way that i can set all columns to have width 40 so that i don't have to list everything?
I have tried using a UniformGrid, but i couldn't make it work properly.
<ListView ItemsSource="{Binding TreeViewData}">
<ListView.Resources>
<DataTemplate
DataType="{x:Type model:Character}">
<Grid >
<Grid.ColumnDefinitions>
<ColumnDefinition Width="50"/>
<ColumnDefinition Width="40"/>
<ColumnDefinition Width="40"/>
<ColumnDefinition Width="40"/>
<ColumnDefinition Width="40"/>
<ColumnDefinition Width="40"/>
</Grid.ColumnDefinitions>
<TextBlock Text="{Binding Type}" />
<TextBox Grid.Column="1" Text="{Binding MaxHealth}" />
<TextBox Grid.Column="2" Text="{Binding Health}" />
<TextBox Grid.Column="3" Text="{Binding RegenerationSpeed}" />
<CheckBox Grid.Column="4" IsChecked="{Binding Invincible}" Margin="10,3,0,0"/>
</Grid>
</DataTemplate>
</ListView.Resources>
</ListView>

It's probably more work than its worth, since you can't directly apply a Style for a grid's ColumnDefinitions. I would probably just set a resource with your value (40) and use that. At least you would only need to change the value one place, if you decided to change the value to 50 or something. You can do that in XAML (in your ResourceDictionary if you have several controls etc. or the Window.Resources, whatever) like this:
<Window.Resources>
<GridLength x:Key="stdWidth">40</stdWidth>
</Window.Resources>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="{StaticResource stdWidth}" />
</Grid.ColumnDefinitions>
</Grid>