let's say I have a grid with 4 columns. Every column takes the same amount of width
-> 100% / 4cols = 25%.
The 3rd column has a TextBlock or any other control in it. Now, when I resize the Width of the Window and the column gets to a minimum value, I want the TextBlock to use ColumnSpan="2" else the TextBlock would be too small. I hope you guys understand what I mean. I tried so many things but I didn't even come close to what I want because I'm pretty new to WPF. For example setting the minWidth so it doesn't get too small doesn't work because at some point the controls will still be hidden inside the grid column. I don't have any useful xaml for you, unless you just want the grid layout. Maybe a Grid is not the right thing i want? The other layouts didn't seem right for this purpose. Any help is appreciated.
You could handle the SizeChanged event of the Grid or the window and programmaticlly set the Grid.ColumnSpan attached property of the TextBlock whenever the grid/window shrinks below a pre-defined minimum width. Please refer to the following sample code.
private void Grid_SizeChanged(object sender, SizeChangedEventArgs e)
{
const double MinWidth = 200;
Grid grid = (Grid)sender;
if (grid.ActualWidth < MinWidth)
Grid.SetColumnSpan(textBlock, 2);
else
Grid.SetColumnSpan(textBlock, 1);
}
XAML:
<Window x:Class="WpfApp1.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d"
Title="MainWindow" Height="300" Width="300">
<Grid SizeChanged="Grid_SizeChanged">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="25*" />
<ColumnDefinition Width="25*" />
<ColumnDefinition Width="25*" />
<ColumnDefinition Width="25*" />
</Grid.ColumnDefinitions>
<TextBlock Background="Yellow" Text="1" />
<TextBlock Background="Green" Text="2" Grid.Column="1" />
<TextBlock Background="Red" Text="4" Grid.Column="3" />
<TextBlock x:Name="textBlock" Background="Blue" Text="3" Grid.Column="2" Grid.ColumnSpan="2" />
</Grid>
</Window>
If you decrease the width of the window, the blue TextBlock streches across the third and fourth columns.
Related
I want to allow a textbox to grow in size, until it fills its container. If you place a blank textbox on a WPF window, it will increase in size (as a user types text into it) until it fills the container, at which point it will stop expanding in size.
However, if I place that textbox in a grid, the textbox never ceases to grow. And even stranger, if I hardcode some fixed widths on the grid's columns, the textbox will even STILL continue to grow.
I want the textbox to grow, and the grid to grow, but once the grid cannot grow anymore, I want the textbox to stop growing also. Can this be done?
Here's a quick sample. As you type into the textbox, it'll grow in size (as intended). However, the textbox will continue to grow even after the grid is completely filled the WPF form.
<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" Name="window">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="Auto" />
</Grid.ColumnDefinitions>
<TextBlock Grid.Column="0" Text="StackOverflow"/>
<TextBox Grid.Column="1"/>
</Grid>
</Window>
Setting the second column definition's width to "*" should provide you with the desired functionality.
In addition, set the MinWidth on the textbox, and the HorizontalAlignment to Left, so that it doesn't stretch to the column width. If you want it to stretch, then remove this property.
In this example, I added an additional column with a width of 50 to highlight that the textbox will stop growing once it meets the column width boundary.
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="*" />
<ColumnDefinition Width="50" />
</Grid.ColumnDefinitions>
<TextBlock Grid.Column="0"
Text="StackOverflow" />
<TextBox Grid.Column="1"
HorizontalAlignment="Left"
MinWidth="50" />
</Grid>
I am working on a C# wpf project and I am having an issue. I have a Main Window which hosts a grid. This grid hosts a User Control and the User Control hosts 3 DockPanels in a 3 column layout.
The 3 columns are adjustable via a grid splitter which is working however, the right hand side column isn't filling the available space of the Main Window grid.
Below is the XAML of my Main Window hosting the user control:
<Window x:Class="Boardies_Email_Client.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:Boardies_Email_Client"
mc:Ignorable="d"
Title="MainWindow" Height="350" WindowStartupLocation="CenterScreen" ResizeMode="CanResizeWithGrip" WindowState="Maximized">
<Grid>
<Grid x:Name="GridHost" Margin="0" Background="#FFF3FF00"/>
<StatusBar Height="24" VerticalAlignment="Bottom"/>
</Grid>
</Window>
Below is the XAML for the User Control
<UserControl x:Class="Boardies_Email_Client.EmailClient"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:local="clr-namespace:Boardies_Email_Client"
mc:Ignorable="d"
d:DesignHeight="505">
<Grid HorizontalAlignment="Left" Width="1120">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="92*"/>
<ColumnDefinition Width="121*"/>
<ColumnDefinition Width="87*"/>
<ColumnDefinition Width="225*"/>
<ColumnDefinition Width="134*"/>
<ColumnDefinition Width="116*"/>
<ColumnDefinition Width="345*"/>
</Grid.ColumnDefinitions>
<DockPanel Background="#FFEC1717" Grid.ColumnSpan="2">
<Label x:Name="label" Content="My Label" Margin="0,0,0,460" Width="175"/>
</DockPanel>
<GridSplitter x:Name="gridSplitter" HorizontalAlignment="Left" Width="5" Grid.Column="2"/>
<DockPanel LastChildFill="False" Margin="5,0,0,0" Background="#FF5DFF00" Grid.Column="2" Grid.ColumnSpan="3"/>
<GridSplitter x:Name="gridSplitter1" HorizontalAlignment="Left" Width="5" Grid.Column="5"/>
<DockPanel Grid.Column="5" Margin="5,0,0,0" Background="#FF0A00E2" Grid.ColumnSpan="2"/>
</Grid>
</UserControl>
Below is a screenshot showing the problem
The red, green and blue are the dock panels separated by grid splitters. The yellow is the background colour of the the grid of the main window hosting the user control, the blue panel should be filling up the available space of the yellow but I can't see why it isn't.
I haven't hard set any widths that I can find.
#Boardy
I ran your code.
The splitting of the UserControl and organization of the Grid are fine.
But you set the width to a fixed size :
<UserControl ...>
<Grid HorizontalAlignment="Left" Width="1120">
If you remove the fixed size, everything is fine, the control takes the size of the window and you don't see other background (yellow or right) on the right for sizes larger than 1120 :
<UserControl ...>
<Grid >
Regards
I have a WPF Window which contains a Grid. It's set up to look like a Checkers board, so I need the squares of the grid to stay square when the window is resized.
I've tried many things but nothing seems to work. I hope it's just a matter of getting the right attribute, and not something complicated, but I need it to resize proportionally either way.
I'm also not sure if this should happen in the Grid or in the Window. I would assume the Window because that's the controller for resizing, but I could be wrong.
Any suggestions?
xaml for Window:
<Window x:Class="TicTacToeClient.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:TicTacToeClient"
Title="Mini-Checkers V1.1" Height="600" Width="600"
MinHeight="200" MinWidth="200" MaxHeight="600" MaxWidth="600" >
<DockPanel>
<Menu DockPanel.Dock="Top">
<MenuItem Header="Game">
<MenuItem Header="Set Ip Address" Name="IPAddressMenuItem"/>
<MenuItem Header="Set Name" Name="SetNameMenuItem"/>
</MenuItem>
</Menu>
<TextBlock DockPanel.Dock="Bottom" Text ="Status: " Name="GameStatusBar" />
<local:TicTacToeBoard x:Name="GameBoard" />
</DockPanel>
xaml for Grid:
<UserControl x:Class="TicTacToeClient.TicTacToeBoard"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
mc:Ignorable="d"
d:DesignHeight="600" d:DesignWidth="600">
<Grid Name="MainGrid">
<Grid.RowDefinitions>
....
I would suggest DataBinding the Width of your Grid to the Height (or vice-versa). This will make sure that it always grows proportionally. Something as simple as this should work:
<Grid x:Name="Checkerboard" VerticalAlignment="Stretch" HorizontalAlignment="Stretch" Width="{Binding RelativeSource={RelativeSource Self}} Path=ActualHeight}">
<Grid.RowDefinitions>
<RowDefinition/>
<RowDefinition/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition/>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<!-- Grid Contents -->
</Grid>
And if you want your cells to all remain square, just make sure they're all * sized, so they will be spread out equally.
Alternatively, you can put yor grid inside a Viewbox with Stretch="Uniform"
You can try enclosing yourGameBoard in a ViewBox with Stretch Property set to Uniform and StretchDirection set to Both. like this. It wont keep the Form's Aspect ratio uniform but will keep your GameBoard Proportions Uniform.
<Viewbox Stretch="Uniform" StretchDirection="Both">
<local:TicTacToeBoard x:Name="GameBoard" />
</Viewbox>
How can I get the height of a Page?, i.e; the height of all elements in the page.
For example, if I have this XAML which makes a Page, how can I get the height at runtime?
<Page x:Class="DialogViews.SomeError"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
mc:Ignorable="d"
d:DesignHeight="300" d:DesignWidth="400"
Title="SomeMessage">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="50" />
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<Label Grid.Row="0" Style="{StaticResource ResourceKey=DialogTitleError}">A Problem</Label>
<TextBlock Grid.Row="1" Style="{StaticResource ResourceKey=DialogMsg}">
Some message to user
</TextBlock>
<Label Grid.Row="2" HorizontalAlignment="Right">
<Hyperlink>
Some link for info
</Hyperlink>
</Label>
</Grid>
</Page>
Reason:
I've created a custom Window that will display as a Dialog message to the user, the Window contains a Frame which in-turn contains this Page. I'm trying to fix the height of the Window to that of the Page.
I have tried:
myPage.Height; //NaN
myPage.ActualHeight; //0
If you want to fit the size of the Window to your user control Page, then I would suggest trying the SizeToContent property of Window.
<Window x:Class "MyNameSpace.MyWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
SizeToContent="Height" />
Height - Specifies that a window will automatically set its height to fit the height of its content, but not the width.
Edit: This will stretch your Window to fit the Frame, which hopefully is set to change with the widths/heights of your Page.
Are you looking for
SystemParameters.FixedFrameVerticalBorderWidth
SystemParameters.FixedFrameHorizontalBorderHeight
SystemParameters.WindowCaptionHeight
Please check this msdn link
Try with
this.Height;<br/>
this.Width;
Everything about my layout will flow with the resizing of the main window. The problem I'm facing is that as you can see, the datagrid goes off the screen. If you maximize the window, the datagrid will resize with the window, but continue to go off the screen. How do I get it to maintain its margin of 20 with it's parent grid?
<Grid>
<StackPanel Orientation="Vertical">
<TextBox Height="170" Name="txtSQL" VerticalAlignment="Top" AcceptsReturn="True" TextWrapping="Wrap" Margin="20"/>
<Button Content="Run!" Height="23" HorizontalAlignment="Left" Name="btnRun" VerticalAlignment="Top" Margin="20,0,0,0" Width="75" Click="btnRun_Click" />
<Grid>
<my:DataGrid Name="dgResults" VerticalAlignment="Top" Margin="20" />
</Grid>
</StackPanel>
</Grid>
UPDATE:
Just to be more specific. The effect I'm trying to accomplish here is this:
When the window first loads, you are presented with a blank datagrid, so it's only about 15 pixels high. When you run the query, it will populate the datagrid by reassigning the itemssource. As of now, when you do that, if the data exceeds the window size, it will go off the bottom of the screen. I need it to only expand to the bottom of the window then enable the scrollbar. I can do this just by wrapping it in a scrollviewer im sure. However, when the window is resized, the datagrid needs to resize with it.
I'm wondering if the setup might have something to do with it. The form is actually a wpf page being displayed in a frame.
UPDATE:
<Page x:Class="Hold_Database___Prototype_1.Views.SQL"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
mc:Ignorable="d"
d:DesignHeight="304" d:DesignWidth="732"
Title="SQL" xmlns:my="http://schemas.microsoft.com/wpf/2008/toolkit" AllowDrop="True">
<Grid>
<Grid.RowDefinitions>
<RowDefinition />
<RowDefinition Height="23" />
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<TextBox Height="170" Name="txtSQL" VerticalAlignment="Top" AcceptsReturn="True" TextWrapping="Wrap" Margin="20" Grid.Row="0"/>
<Button Content="Run!" Height="23" HorizontalAlignment="Left" Name="btnRun" VerticalAlignment="Top"
Margin="20,0,0,0" Width="75" Grid.Row="1" Click="btnRun_Click" />
<DockPanel Grid.Row="2">
<my:DataGrid Name="dgResults" Margin="20" />
</DockPanel>
</Grid>
</Page>
What is the dock panel for in this example?
Try putting the DataGrid directly in the cell with no stackpanel. If you are setting the button height then set set grid to auto.
Also, why give so much space to the text?
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<TextBox Height="170" Name="txtSQL" VerticalAlignment="Top" AcceptsReturn="True" TextWrapping="Wrap" Margin="20" Grid.Row="0"/>
<Button Content="Run!" Height="23" HorizontalAlignment="Left" Name="btnRun" VerticalAlignment="Top"
Margin="20,0,0,0" Width="75" Grid.Row="1" Click="btnRun_Click" />
<my:DataGrid Grid.Row="2" <my:DataGrid Name="dgResults" Margin="20" />
Then also set HorizontalAlignment, VerticleAlignment, HorizontalContentAlignment, and VerticalContentAlignment = stretch
Your Grid is drawn off screen without a scroll bar because you are using a StackPanel. Care must be taken when using StackPanel - it is the most simplistic of all WPF Panel derived classes since its MeasureOverride calls Measure for all of its children with a size of double.PositiveInifity regardless of how much space the panel actually has available. Even a ScrollViewer will not help you with a StackPanel (the ScrollBar will be shown, but you won't be able to move it).
For example, consider a Window 350 in height and width, and a single Button as its content which is 500 in both height and width:
<Window x:Class="WpfApplication2.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="350">
<StackPanel>
<ScrollViewer HorizontalScrollBarVisibility="Auto" VerticalScrollBarVisibility="Auto">
<Button Content="Hello" Height="500" Width="500" />
</ScrollViewer>
</StackPanel>
</Window>
Similar to your example, the Button here is drawn off screen in both the vertical and horizontal directions and a non-functional scroll bar will be present. If we change the panel to one which respects the size of its given area (e.g. DockPanel):
<Window x:Class="WpfApplication2.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">
<DockPanel>
<ScrollViewer>
<Button Content="Hello" Height="500" />
</ScrollViewer>
</DockPanel>
</Window>
then scroll bars appear which are functional and hence allow the content off screen to be shown by scrolling.
Hope this helps!
What I have done was do define the horizontal and vertical alignments to "Stretch" respectively at the control you want (your DataGrid) to take up the size based on the window being resized.