Can you give an idea on xaml layout such that image is on the right and some content on the right.
And when image becomes larger, so the content shifts to the right?
I could probably put a two columns grid and programmatically enlarge image and making column 0 bigger, but there is must be a proper way to do.
Use a control that doesn't automatically adjust the size of its children based on available space, such as a Horizontal StackPanel
<StackPanel Orientation="Horizontal">
<Image ... />
<ContentControl .... />
</StackPanel>
If I misunderstood you and you actually want the content to resize based on available space, then use a control that automatically adjusts the size of its children based on available space, such as a DockPanel
<DockPanel>
<Image DockPanel.Dock="Right" ... />
<ContentControl .... />
</DockPanel>
When I first started working with WPF, I found this article very useful for figuring out what sort of panels I wanted to use to layout my controls
Do you mean image on the left and additional content on the right? Use width = auto for column 0 and width = * for column 1.
Related
I am trying to set up an element within a WPF application, but cannot get the TextTrimming on the TextBlocks to work properly. This is within a ScrollViewer. I am currently using a DockPanel as the inner container.
I have searched quite a bit, but found no questions addressing this issue.
The XAML for the container:
<Grid>
<ScrollViewer>
<DockPanel Name="listedCharacters" LastChildFill="False"></DockPanel>
</ScrollViewer>
</Grid>
The XAML for the child elements (added by code):
<UserControl …>
<Grid DockPanel.Dock="Top" HorizontalAlignment="Stretch">
<TextBlock Text="{Binding FullName}" TextTrimming="CharacterEllipsis" />
</Grid>
</UserControl>
The first problem is that whether I use the DockPanel or a StackPanel, as the inner container, the child element's width appears to be dictated by its content (the TextBlocks) rather than constrained by the parent ScrollViewer.
The effect I want is for the ellipsis to truncate each TextBlock's content when the Window's grid column (not shown in code) is narrower than the bound text. Basically, a list that scrolls vertically when needed, and trims horizontally (which I thought would have been sufficiently common that the answer would be out there; alas, no).
I believe I need to use my own UserControl for this, as there is a lot more going on than shown her; right-click menus on the item in the list, etc.
The secondary issue, iff the optimal panel to use is the DockPanel, how to apply the DockPanel.Dock="Top" through code (C#) when the elements are dynamically added? Again, I cannot find anything that appears to explain this. (I know it is probably in the wrong place in the sample code above.)
I'm trying to implement a certain layout.
I have two elements that I want to stack vertically (I need them to follow each other closely). I am currently trying to achieve it using a Stackpanel.
The problem is that I want the first element to have a limited width and the other to use all the width available in the StackPanel. Ideally, I would like that the first element have a width equals to the width of four columns from the grid that contains the StackPanel, here is my code.
<Grid>
<!-- Colums and Rows definition go here -->
<StackPanel Grid.Column="0" Grid.ColumnSpan="4" Grid.Row="3" Grid.RowSpan="8">
//The first element
<Viewbox Name="viewbox_choix" Margin="160,0,0,0" HorizontalAlignment="Left" VerticalAlignment="Top" Grid.Column="0" Grid.ColumnSpan="4" Grid.Row="3" Grid.RowSpan="4">
//The second element
<StackPanel Grid.Column="0" Grid.ColumnSpan="5">
<Border></Border>
etc...
</StackPanel>
</StackPanel>
</Grid>
The grid attributes are referring to the parent grid of the stackpanel. But the Grid.Column and Grid.ColumnSpans seem to have no effect when I try to use them inside the StackPanel.
The problem of that code is that the first element also uses all the width of the StackPanel but that isn't what I want...
Can anybody help me ? I precise that I'm still learning WPF and I don't really know how bindings work...
In WPF, a StackPanel does not work like a Grid. There is no maximum width... it will happily let content disappear out of its right side. If you want automatic resizing, just replace the StackPanels with `Grid
UPDATE >>>
In the Grid class, there is an attached property called IsSharedSizeScope. Add this to the parent Grid and set it to true. Then in your RowDefinitions, you can add SharedSizeGroup properties to the columns that you require.
These examples may help you:
Grid's SharedSizeGroup and * sizing (SO post)
Grid.IsSharedSizeScope Attached Property (MSDN)
You may need to experiment a bit, but you should be able to get the desired effect using these properties.
I have a scenerio where I want to dynamically render a custom form object. This form is similar to a WinForms form. It will display one of more button bars, buttons can only live within a button bar in our implementation, and numerous edit control that the user will use for data entry.
In rendering the form we have in a configuration file a row height and column width, both as a pertcentage of the application area. All forms share a common row height and column width. The actual device unit value of these are calculated on applicaiton initialization.
My issue is with sizing the form. For example, I have a form that is supposed to be 15 rows by 80 columns, let's say this translates to 500 units high and 800 units wide. This would be the form area, not including button bars. Right now I am calculating the window height and width in a FormPreviewManager. However, it is cumbersome as I have to give the total units, including the size of the button bar(s) and the windows borders, which may change as they have the option of including a title bar or not in the floating form window.
Within the rendering of the form I use a DockPanel to render the button bar(s) and claim the remaining space as my grid of rows and columns. I tried creatign the button bar(s), setting the remaining space to my FormGrid object, then specifically setting the Width and Height for the FormGrid but it doesn't change the size of the containing window.
How can I make it so that the floating window sizes automatically? I want to be able to draw the button bar(s) then say remaining space is 500 units high and 800 units wide, the window then adjust to whatever size it needs to hold this data, no more and no less.
Any help on this, or a possible other approach, would be great.
Update
Basically if this was my entire XAML definition for my window I would like to be able to set the width and height of UnusedContent and have the window resize accordingly.
<Grid>
<DockPanel>
<StackPanel DockPanel.Dock="Top" Height="50" />
<StackPanel DockPanel.Dock="Left" Width="50" />
<ContentControl x:Name="UnusedContent" />
</DockPanel>
</Grid>
If I set UnusedContent to 200 by 200 it would create a window with interior dimensions of 250 by 250, the content area plus the two stack panels.
You can try placing a control to fill up the remaining DockPanel space, and then binding to that control's ActualHeight and ActualWidth properties
<DockPanel>
<StackPanel DockPanel.Dock="Top" Height="50" />
<StackPanel DockPanel.Dock="Left" Width="100" />
<ContentControl x:Name="Spacer" />
</DockPanel>
<Grid Height="{Binding ElementName=Spacer, Path=ActualHeight}"
Width="{Binding ElementName=Spacer, Path=ActualWidth}" />
I am starting to learn SL...
I am trying to make a MediaElement of size X, and on the bottom of the movie frame some subtitles that will run.
I was unable to understand if I need absolute position or something else.
Please advice
thanks
If you need to us it as a subtitle you just need to put your TextBlock under the MediaElement on your Grid and need to give VerticalAllignment property as bottom on XAML. And it will be over it. Like this;
<Grid>
<MediaElement/>
<TextBlock VerticalAllignment="Bottom"/>
</Grid>
You may refer Grid Layout as relative positioning if you're new to silverlight. And can give a margin to your textblock or anything you want just take a look at the intellisense (if using VS) and you'll understand, if you're using expression blend it'll be a lot easier with UI.
If you want to use absolute positioning you'll need to use Canvas instead of Grid Layout, its the same and you can change anything to canvas with nearly no problem. In canvas, you need to use left and right properties instead of allignments. Like this;
<Canvas>
<MediaElement/>
<TextBlock Canvas.Left="0" Canvas.Top="400"/>
</Canvas>
Another option is stackpanel its not really suitable for LayoutRoot, but its pretty nice for controls. So if you want your subtitles to stay under your movie you should use StackPanel like this;
<StackPanel Orientation="Vertical">
<MediaElement/>
<TextBlock/>
</StackPanel>
So to sum up;
-If you want your subtitles to be on top of your movie use grid like the first example,
-If you have a fixed size and you want to place your subtitles anywhere you want use Canvas,
-And if you want to put your subtitles under your movie use StackPanel.
-My personal choice would be grid. =)
For more information you may check this article it seems like a nice one!
http://weblogs.asp.net/scottgu/pages/silverlight-tutorial-part-2-using-layout-management.aspx
Happy coding!!
The TextBlock will overlay (within a Grid layout) the MediaElement simply because it is declared after the MediaElement. VerticalAlignment="Bottom" will place it at the bottom of the Grid. You might want to set the Grid's width and height (instead of the MediaElement) that of the size of the video. The MediaElement will auto size to stretch the full size of the grid.
<Grid x:Name="LayoutRoot" Width="480" Height="320">
<MediaElement/>
<TextBlock TextWrapping="Wrap" VerticalAlignment="Bottom"/>
</Grid>
So I'm coming at WPF from a HTML perspective.
I just want to put a TextBox on my Window like this:
<Grid>
<TextBox Name="theName" />
</Grid>
Turns out that the TextBox is then HUGE, covers the whole window. (!)
Ok, that's not what I want, but I don't want to define the EXACT size either since I know Height and Width should be flexible, so I try:
<TextBox Name="theName" Width="Auto" Height="Auto"/>
Same thing. So I try:
<TextBox Name="theName"
HorizontalAlignment="Stretch"
VerticalAlignment="Stretch"/>
Same thing. So I just hard code the sizes:
<TextBox Name="theName" Width="100" Height="20"/>
Which I know is not a good programming practice in WPF.
So, what how do you tell TextBox to "display default sizes for the font size being used"?
You can take Bryan's example even a bit further. By specifying a specific alignment that isn't stretch and further constrain the TextBox so that it won't expand beyond a certain size. eg:
<Grid x:Name="LayoutRoot">
<TextBox HorizontalAlignment="Left" VerticalAlignment="Top" Text="TextBox" TextWrapping="Wrap"
MinWidth="15" MinHeight="20" MaxWidth="500" MaxHeight="50"/>
</Grid>
You can take it even further by setting up rows/columns inside the Grid and constraining them in various fashions. As you're coming from an HTML background, think of it like using a table to control layout. Remember that you can also nest other container objects (i.e. StackPanels, WrapPanels, other Grids, etc...).
The challenge with XAML and the WPF/Silverlight controls is that they a very flexible, so you've got to get a handle on all the options and how they affect layout.
Good luck. I'm going through this exact same thing now.
Use a different container.
The Grid always streches its child controls to fill the grid cell.
You could use e.g. a stackpanel which only streches its controls in one direction.
In addition to using a different panel as Stefan mentioned you could just give the TextBox an alignment that isn't Stretch. e.g.
<TextBox Name="theName" HorizontalAlignment="Left" VerticalAlignment="Top"/>
The sizes in WPF aren't pixels, they are "device independent pixels" that are 1/96 of an inch - so in today's normal DPI setup they map 1:1 to pixels.
But, if you run the program in high DPI mode the TextBox will grow with the DPI (and the font).
So setting an hard-coded size isn't that bad.
Other than that you can only use HorizontalAlignment and VerticalAlignment that are not "Stretch", this will size the TextBox to content - but then an empty TextBox will be tiny.
You can set VerticalAlignment to "Center", "Top" or "Bottom" to get automatic height of about one line (maybe backed up by a MinHeight setting to avoid problems really tiny fonts) and then set the Width so the TextBox width does not change as the user types into it.