I am creating a UWP application and I want a simple check box, no text, for each entry in my ListView. If I add a checkbox control to my template for the listview, I get a big gap after the checkbox for the Content - event when the content is empty.
If I turn on multiselect in the listview so I get a nice checkbox for each row, I can't seem to figure out how to databind the check box for each row in the listview to the Selected property of my ViewModel.
Below is a picture of what I want the area of the check box to look like. This was generated using the SelectionMode="Multiple" on the listview. Remember - the problem with this approach is I can't seem to find a way to bind the check box to the Selected property of my ViewModel class.
Below is what it looks like if I remove the SeletionMode property and add a check box to my ItemTemplate. As you can see there is a huge gap between the check box and the area where the image will be due to the Checkbox control's minimum width of 120.
Any suggestions would be greatly appreciated.
You could just set the MinWidth on the Checkbox itself
eg
<StackPanel Orientation="Horizontal">
<CheckBox x:Name="MyCheck" IsChecked="True" MinWidth="30"/>
<Rectangle Fill="Red" Width="100" Height="50"/>
</StackPanel>
The alternative is creating a copy of the Checkbox Styles and Template but that seems like overkill here.
Related
Could someone answer me the question about listview?
I have variable MyDatas which is collection of listview (and it works):
<ListView
x:Name="lstView"
HasUnevenRows="True"
ItemsSource="{Binding MyDatas}"> ...
Next I have (part of my code but is enough for explaining the problem):
<Label Grid.Row="0"
Grid.Column="1"
Text="{Binding E1}"
FontSize="{Binding FProp.Size1}"
FontAttributes="{Binding FProp.Atrib1}"/>
E1 is a field of MyDatas and this binding works correct. I have property of fonts in another variable FProp (FProp.Size1 and FProp.Atrib1) and this is problem! How can I use this another variable in this listview?
If FProp is used outside of listview all is ok, if I use it in listview it does not work.
Thank you for help
I believe you are not binding correctly the font size.
You are referencing a property named Size1 inside the object FProp which is not in your current binding context. The main problem is that you can only have one binding context per object. So, you should include the Size1 and Atrib1in your MyDatas object in order to make it available for the label. Another option is to change the binding context of the listview to point to FProp then you could access the values on the labels, but you will lose access to the E1 value. So you will need to choose how to fix this problem depending on the options provided.
You could add an x:Name to your ListView, let's say listView1 and use something like this
{Binding Path=BindingContext.FProp.Size1, Source={x:Reference listView1}}
I am trying to get a RichEditBox to take over the entire width of the app window and to be responsive to window resizing, so far the code I have is the following:
<RichEditBox HorizontalAlignment="Stretch"
TextWrapping="WrapWholeWords"
Height="250"
Name="Intro"/>
What I am getting from the code above is this:
Any ideas on how can I get this to work? Why is it that I tell the text to wrap and it doesn't follow?
UPDATE
I also tried this:
<RichEditBox HorizontalAlignment="Stretch"
Height="250"
Name="Intro"/>
But the result is:
The problem that I am having is that it seems that HorizontalAlignment="Stretch" does not really do anything. The only way I am able to set a decent width is by hard-coding it, for example: Width="600". But if I do this my UI will not respond correctly to resizing. I also tried HorizontalContentAlingment="Stretch" but the result is exactly the same.
How can I get my RichEditBox take up all the available Width and Wrap at the same time?
If you look at the documentation of RichEditBox.TextWrapping, you'll notice that WrapWholeWords is invalid. You have to use
<RichEditBox TextWrapping="Wrap"/>
-or-
<RichEditBox TextWrapping="NoWrap"/>
Since Wrap is the default value, you can drop the property.
<RichEditBox HorizontalAlignment="Stretch"
Height="250"
Name="Intro"/>
Edit: in reply to the updated question:
A control only takes the width of it's parent control. Some container controls (e.g. Grid) automatically take the full width available, while others (e.g. StackPanel) only take the required size of it's children. Using HorizontalAlignment="Stretch" in combination with a StackPanel as a parent control, will only use the MinWidth property instead of the full available width on your screen. Sometimes you can't directly see this issue, e.g. when your control is inside an itemtemplate of a ListView. Use the Live Visual Tree in Visual Studio to find the parent containers and locate the issue.
So in short: make sure your RichEditBox is inside a Grid (or similar control) instead of a StackPanel.
is it possible to get ellipsis inside button when content length increase the width of button.
I tried editing template but did get much success?
You should have some options. If it's just at the instance, you can just plop your content in as TextBlock so something like;
<Button>
<Button.Content>
<TextBlock Text="Blah Blah Blah" TextTrimming="WordEllipsis"/>
</Button.Content>
</Button>
Or if you make a custom style template for Button you could replace the ContentPresenter in it with a TextBlock with it's content bound to the template like Text="{TemplateBinding Content}" and apply your TextTrimming directly to it. Except remember TextTrimming needs a boundary to invoke it, so your Button's may require like a set MaxWidth/Width or its parent panel will have to restrict its size to invoke the trimming.
Hope this helps, Cheers.
PS - This same concept can be used in WP, WPF, Silverlight, whatever really.
How to make CheckBox bigger on Windows 8 ?
I already know about LayoutTransform, but looks like there is not this property on Windows 8:
<CheckBox>
<CheckBox.LayoutTransform>
<ScaleTransform ScaleX="2" ScaleY="2" />
</CheckBox.LayoutTransform>
</CheckBox>
Several ways:
You can increase the overall size by applying a render transform. This will double the height and width during rendering. It may not lay out as you want.
<CheckBox RenderTransformOrigin="0.5,0.5" >
<CheckBox.RenderTransform>
<CompositeTransform ScaleX="2" ScaleY="2"/>
</CheckBox.RenderTransform>
</CheckBox>
You can use a ViewBox, which will lay out in the same spot but won't give full control over the size
<Viewbox Height="100">
<CheckBox>
</CheckBox>
</Viewbox>
Or you can edit the template. This is the most code, but most will be generated for you if you select a checkbox in the designer, right click, and choose "Edit template...". It will provide the most control and you can completely swap out the Checkbox's elements. MSDN's Quickstart: Control templates demonstrates changing a Checkbox's template. Depending on the exact look you'll want you'll probably need to increase the sizes of all of the sub-elements (NormalRectangle, CheckGlyph, IndeterminateGlyph, FocusVisualWhite, and FocusVisualBlack).
I have a custom WPF control to display a list of items using an ItemsControl. The ItemsPresenter is defined in the template to display the list and it is embedded inside a ScrollViewer for scrolling purposes:
<ControlTemplate TargetType="ItemsControl">
<Grid x:Name="LayoutRoot">
<ScrollViewer Margin="3">
<ItemsPresenter/>
</ScrollViewer>
</Grid>
</ControlTemplate>
My application creates two instances of the custom control to show the list side by side.
What I want is when user selects an item on the first one, the second control automatically scrolls so that the same item is displayed in the same position relative to the top. To accomplish this I need to know
How to get the position (in pixels) of the selected item in the first control?
How to scroll to the same position in the second control?
Are there any other ways to do this?