I have been trying to dock a dock panel.But couldn't.Generally in windows forms if we dock a panel it will fit correctly. i searched in google which shows only for docking the buttons in dock panel.
<Window x:Class="WpfApplication1.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="525">
<Grid>
<DockPanel>
<DockPanel DockPanel.Dock="Left" Background="Azure">
<TextBlock Width="600"></TextBlock>
</DockPanel>
<DockPanel DockPanel.Dock="Right" Background="Black"></DockPanel>
<DockPanel DockPanel.Dock="top" Background="Cornsilk"></DockPanel>
</DockPanel>
</Grid>
The elements you're binding to the right and top are empty ...
So, you get the one you set the width to to the left (600), then the right one takes width = 0, and the last element fills the rest (since the default for LastChildFill is true), hence you see the Cornsilk color filling everything else.
Seems to work :)
You can also set the LastChildFill to false in the dockpanel like this:
<DockPanel LastChildFill="true">
and then you won't even see the Cornsilk, since it's size is zero as well.
Related
I have the following code in WPF XAML:
<Window x:Class="WPFDemo.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="525">
<StackPanel>
<Button Content="Hello World" Width="Auto" Height="Auto"></Button>
</StackPanel>
</Window>
I have set the width and height of the Button to "Auto" but still it stretches the complete horizontal width. What am I doing wrong? I do not want to provide a hardcoded values for the width and height!
You are using the wrong kind of container control. The StackPanel does not resize its contents. Try a Grid instead:
<Grid>
<Button Content="Hello" HorizontalAlignment="Center" VerticalAlignment="Center" />
</Grid>
Also, you don't need to set the Width and Height to "Auto", as the default values will enable the Button to stretch to fill its parent container (depending on the container control). Please see the Panels Overview page on MSDN for more help with the differences between the various container controls in WPF.
As Sheridan said, you do not need to set Width and Height to "Auto".
Your problem is that the default alignment of the StackPanel content is "Stretch".
So just set the HorizontalAlignment property of your button to "Left" or "Right".
<Window x:Class="WPFDemo.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow">
<Grid>
<Button Content="Hello World" Width="Auto" Height="Auto"></Button>
</Grid>
</Window>
In my example wpf app I've added one button and one popup to the window. The button is in the bottom right corner and the popup has set "PlacementTarget" property to it and "Placement" set to top. The popup consists of one very long textblock.
What I expect this popup will behave is not to go outside of the window and therefore automatically set his "HorizontalOffset" to the appropriate value, but the popup behaves against my intentions.
Here's my xaml file:
<Window
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:WpfApplication1" x:Name="window" x:Class="WpfApplication1.MainWindow"
Title="MainWindow" Height="350" Width="525">
<Window.Resources>
<local:Converters x:Key="Converters"/>
</Window.Resources>
<Grid>
<Button x:Name="button" Content="Button" VerticalAlignment="Bottom" Width="75" HorizontalAlignment="Right"/>
<Popup Placement="Top" PlacementTarget="{Binding ElementName=button, Mode=OneWay}" IsOpen="True">
<TextBlock TextWrapping="Wrap" Text="aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" Background="White"/>
</Popup>
</Grid>
Do anyone know how to fix it?
I've read that this should be default popup behavior to take care of going out of the boundaries, but not in my case. Thanks in advance.
Have you tried to set the width of the Popup or Textblock ?
Sorry, I can't write this poor answer as a comment..
I have MyWindow where SizeToContent="WidthAndHeight" in WPF. When MyWindow is bigger than screen I want to activate a ScrollViewer. What is the easiest way to do that?
you need to use a... Scrollviewer.
some code for you:
<Window x:Class="Test.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow"
Name="Window"
SizeToContent="WidthAndHeight">
<ScrollViewer HorizontalAlignment="Stretch"
VerticalAlignment="Stretch"
Background="Green">
<Grid Name="MainGrid" Background="red" MinWidth="600" MinHeight="400">
<!--Some Content Here-->
<Label>Foo</Label>
</Grid>
</ScrollViewer>
</Window>
What this code does:
A Window with SizeToContent=WidthAndHeight, as wanted.
A ScrollViewer that stretches with the window
A Grid to put your content (could be a Canvas, or any kind of Panel). This grid as MinWidth and MinHeight set so that what is inside the grid will be able to stretch up but not down. So your content will initially be 600x400 (in this case) but will be able to stretch up. If you try to size it down to 300x200 for instance, you'll get your scrollbars.
this should at least get you started.
In the following XAML code the button text is half missing. I can change the Margin property and it becomes obvious that after 250px the content is hidden. Why is that, and how can I fix it?
<Window x:Class="InnerInterface.InventoryManagement" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="someWindow" Height="500" Width="500">
<DockPanel HorizontalAlignment="Left" Name="dockPanel1" VerticalAlignment="Top">
<Grid DockPanel.Dock="Top">
<Button Name="buttonReturnToMainMenu" Content="someButton" Margin="200,0" Width="125" />
</Grid>
</DockPanel>
</Window>
You have a horizontal margin of 200, and a button width of 125, which means the total width needed to show the control properly is about 525.
You also have HorizontalAlignment=Left" on your DockPanel, which means it will draw the content at whatever width it needs and align it to the left side of the screen instead of stretching it to fill all available space. This means it is blocking out a space of 200 on either side of the control, and drawing the button in the remaining space. If this remaining space is less than 125, the image will be cropped.
If you switch to HorizontalAlignment="Stretch", then it will draw the control first (with margins), then stretch it's size so it fits all available space, so the entire control gets resized rather than cropped.
You might be interested in reading this MSDN article on Alignment, Margins, and Padding in WPF.
Edit
If you want only the Left margin to be 200, then use Margin="200,0,0,0". Using Margin="200,0" means that both the left and the right Margins will be 200.
Not really sure about your exact problem, but maybe this should help:
<Window x:Class="WpfApplication1.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="500" Width="500">
<DockPanel HorizontalAlignment="Stretch" Name="dockPanel1" VerticalAlignment="Top">
<Grid DockPanel.Dock="Top" >
<Button Name="buttonReturnToMainMenu" Content="someButton" Width="125" />
</Grid>
</DockPanel>
</Window>
The problem is that the button Margin is set as:
Margin="200,0"
It should be set as:
Margin="200,0,0,0"
This eliminates the margin on the right side and allows the whole button to show.
I am using a ListBox with a DataTemplate to create the below map legend. I would like to get the ListBox to have a transparent background (where it is now white) and the ListItems to retain their existing white background. The two legends would then appear to float with a transparent gap between.
I have tried setting the ListBox background with a SolidBrush set to 0 opacity but that doesn't seem to work. I understand that items in the tree cannot have transparency that is less than items above in the tree. Is that my issue and how do I resolve?
Thanks
alt text http://www.freeimagehosting.net/uploads/659cd194e7.png
You can set the Background to {x:Null}.
Did you try setting the background color of the ListBox to "Transparent" (literally)?
Here is some code that worked for me:
<Window x:Class="WpfApplication3.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="525" Background="Blue">
<Grid>
<ListBox x:Name="ListBox1" Margin="12,25,114,97" Background="#00E51A1A">
<ListBox.ItemTemplate>
<DataTemplate>
<Grid Margin="4" Height="20" Width="100" Background="Yellow" />
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</Grid>
</Window>