how come I can not call the object image and the object image backClickArrow nextClickArrow from codebehind? They can not because these are inside a control?
how can I call from codebehind, they need to start an event? thank you so much.
<control:CarouselView x:Name="carouselView">
<control:CarouselView.ItemTemplate>
<DataTemplate>
<Grid Padding="10">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"></ColumnDefinition>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="40*"></RowDefinition>
<RowDefinition Height="0.2*"></RowDefinition>
<RowDefinition Height="59.8*"></RowDefinition>
</Grid.RowDefinitions>
<Grid Grid.Row="0">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="5*"></ColumnDefinition>
<ColumnDefinition Width="40*"></ColumnDefinition>
<ColumnDefinition Width="50*"></ColumnDefinition>
<ColumnDefinition Width="5*"></ColumnDefinition>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="*"></RowDefinition>
</Grid.RowDefinitions>
<Image Source="backBlueArrow.png" x:Name="backClickArrow" Aspect="AspectFit" Grid.Column="0"></Image>
<StackLayout Margin="0,0,10,0" VerticalOptions="Center" HorizontalOptions="End" Grid.Column="1">
<Image HeightRequest="70" Source="clock.png" Aspect="AspectFit"></Image>
</StackLayout>
<Grid Grid.Row="0" Grid.Column="2">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"></ColumnDefinition>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="40*"></RowDefinition>
<RowDefinition Height="60*"></RowDefinition>
</Grid.RowDefinitions>
<Label Text="Superficie totale" TextColor="#fff" FontSize="Small" VerticalTextAlignment="End" HorizontalTextAlignment="Start" Grid.Row="0"/>
<Label Text="890000m2" FontSize="Large" TextColor="#fff" VerticalTextAlignment="Start" HorizontalTextAlignment="Start" Grid.Row="1"/>
</Grid>
<Image Source="nextBlueArrow.png" x:Name="nextClickArrow" Aspect="AspectFit" Grid.Column="3"></Image>
</Grid>
<!-- griglia fare la riga bianca -->
<Grid Padding="0" BackgroundColor="White" Grid.Row="1">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"></ColumnDefinition>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="*"></RowDefinition>
</Grid.RowDefinitions>
</Grid>
<Grid Padding="10" Grid.Row="2">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"></ColumnDefinition>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="*"></RowDefinition>
</Grid.RowDefinitions>
</Grid>
</Grid>
<!--<Label Text="{Binding Testo}" />-->
</DataTemplate>
</control:CarouselView.ItemTemplate>
</control:CarouselView>
the object that i wish call:
<Image Source="backBlueArrow.png" x:Name="backClickArrow" Aspect="AspectFit" Grid.Column="0"></Image>
and
<Image Source="nextBlueArrow.png" x:Name="nextClickArrow" Aspect="AspectFit" Grid.Column="3"></Image>
i have solved like this:
<Button Image="nextBlueArrow.png" Clicked="clickme" Grid.Column="3"></Button>
use button and add Image attribute.
Related
I have UserControl with a Grid that is divided into rows and columns. Something like this:
how can I add ListView on multiple rows and columns? For example:
Part of my xaml:
<Grid Margin="30,0,30,0" Background="#00000000">
<Grid.RowDefinitions>
<RowDefinition Height="80" />
<RowDefinition Height="60" />
<RowDefinition Height="160"/>
<RowDefinition Height="50"/>
<RowDefinition Height="50"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="0.4*"/>
<ColumnDefinition Width="0.4*"/>
</Grid.ColumnDefinitions>
<Grid Grid.Row="0" Grid.Column="0">
<Grid.ColumnDefinitions >
<ColumnDefinition Width="0.5*"></ColumnDefinition>
<ColumnDefinition Width="0.5*"></ColumnDefinition>
</Grid.ColumnDefinitions>
<Label Grid.Column="1"
FontSize="28"
FontFamily="../Fonts/#GeForce-Bold"
HorizontalAlignment="Center"
VerticalAlignment="Center"
Foreground="White">
<TextBlock Text="Deploy" TextDecorations="Underline"/>
</Label>
...
...
</Grid>
<Grid Grid.Row="2" Grid.Column="0">
<Grid.ColumnDefinitions >
<ColumnDefinition Width="0.5*"></ColumnDefinition>
<ColumnDefinition Width="0.5*"></ColumnDefinition>
</Grid.ColumnDefinitions>
<Grid Grid.Row="2" Grid.Column="0">
<Grid.RowDefinitions>
<RowDefinition Height="0.3*"></RowDefinition>
<RowDefinition Height="0.7*"></RowDefinition>
</Grid.RowDefinitions>
...
...
My goal is to display ListView at rows 0-3 and columns 0-2.
Mark already gave the hint in the comments, but for the sake of having an answer including an example, here it is:
You are locking for the Grid.ColumnSpan (or Grid.RowSpan) property.
The following code will place the list view starting in column 1 and extending over a total of 2 columns:
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="10"/>
<ColumnDefinition Width="10"/>
<ColumnDefinition Width="10"/>
</Grid.ColumnDefinitions>
<ListView Grid.Column="1" Grid.ColumnSpan="2">
<ListViewItem>item 1</ListViewItem>
<ListViewItem>item 2</ListViewItem>
</ListView>
</Grid>
How can I stop this Grid from expanding vertically and adding all this extra space between the rows?
<ContentPage.Content>
<StackLayout>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="*"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Image Source="testsquare" />
<Image Source="testsquare" Grid.Column="1"/>
<Image Source="testsquare" Grid.Row="1"/>
<Image Source="testsquare" Grid.Column="1" Grid.Row="1"/>
</Grid>
</StackLayout>
</ContentPage.Content>
This is what it should look like (ignore the background color change)
Use "Auto" instead of "*"
<RowDefinition Height="Auto"/>
It appears to be a bug, where the grid height is being treated as if the image is being displayed at its full height.
<Grid BackgroundColor="CornflowerBlue">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="auto"/>
</Grid.RowDefinitions>
<Image Source="testsquare" />
<Image Source="testsquare" Grid.Column="1" />
</Grid>
There is a spacing property in Grid .
Grid has properties to control spacing between rows and columns. The following properties are available for customizing the Grid:
ColumnSpacing – the amount of space between columns. The default value of this property is 6.
RowSpacing – the amount of space between rows. The default value of this property is 6.
You can set RowSpacing or ColumnSpacing to check whether can solve it .
<StackLayout Padding="5">
<Grid RowSpacing="5" ColumnSpacing="5">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="*"/>
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<Image Source="icon.png" BackgroundColor="Accent"/>
<Image Source="icon.png"
BackgroundColor="Accent"
Grid.Column="1" />
<Image Source="icon.png"
BackgroundColor="Accent"
Grid.Row="1" />
<Image Source="icon.png"
BackgroundColor="Accent"
Grid.Column="1"
Grid.Row="1" />
</Grid>
</StackLayout>
About Image , The Aspect property determines how the image will be scaled to fit the display area, with Fill or AspectFill .(Default is AspectFit)
I need to display a small image inside a Frame or Button but the Image that im using its bigger than my Button/Frameand when I try to do it with Frame it wont display the Image only with the Button the problem being that the Image is way too big. How can I fix this.
Using Button:
<Frame BackgroundColor="#40000000" BorderColor="#FFFFFF" CornerRadius="6" Padding="0" Grid.Row="1" Grid.Column="1">
<Grid>
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="0.01*"/>
<RowDefinition Height="0.15*"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="0.01*"/>
<ColumnDefinition Width="0.15*"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Button Image="sobremesa.png" BackgroundColor="Black" Grid.Row="1" Grid.Column="1" x:Name="Ingredient"/>
</Grid>
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="0.2*"/>
<RowDefinition Height="2.8*"/>
<RowDefinition Height="0.7*"/>
<RowDefinition Height="0.7*"/>
<RowDefinition Height="0.2*"/>
</Grid.RowDefinitions>
<Image Source="https://i.imgur.com/066Iazn.png" Grid.Row="1" x:Name="CategoryImage"/>
<Label Text="Melão c/ Presunto" VerticalTextAlignment="Start" TextColor="White" HorizontalTextAlignment="Center" Grid.Row="2"/>
<Label Text="6.90€" VerticalTextAlignment="Start" TextColor="White" HorizontalTextAlignment="Center" Grid.Row="3"/>
</Grid>
</Grid>
<Frame.GestureRecognizers>
<TapGestureRecognizer
Tapped="TapGestureRecognizer_Tapped"
NumberOfTapsRequired="1"/>
</Frame.GestureRecognizers>
</Frame>
Using Frame:
<Frame BackgroundColor="#40000000" BorderColor="#FFFFFF" CornerRadius="6" Padding="0" Grid.Row="1" Grid.Column="1">
<Grid>
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="0.01*"/>
<RowDefinition Height="0.15*"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="0.01*"/>
<ColumnDefinition Width="0.15*"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Frame Grid.Row="1" Grid.Column="1" BackgroundColor="Black" x:Name="Ingredient">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="0.1*"/>
<RowDefinition Height="*"/>
<RowDefinition Height="0.1*"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="0.1*" />
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="0.1*"/>
</Grid.ColumnDefinitions>
<Image Source="sobremesa.png" Grid.Row="1" Grid.Column="1"/>
</Grid>
</Frame>
</Grid>
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="0.2*"/>
<RowDefinition Height="2.8*"/>
<RowDefinition Height="0.7*"/>
<RowDefinition Height="0.7*"/>
<RowDefinition Height="0.2*"/>
</Grid.RowDefinitions>
<Image Source="https://i.imgur.com/066Iazn.png" Grid.Row="1" x:Name="CategoryImage"/>
<Label Text="Melão c/ Presunto" VerticalTextAlignment="Start" TextColor="White" HorizontalTextAlignment="Center" Grid.Row="2"/>
<Label Text="6.90€" VerticalTextAlignment="Start" TextColor="White" HorizontalTextAlignment="Center" Grid.Row="3"/>
</Grid>
</Grid>
<Frame.GestureRecognizers>
<TapGestureRecognizer
Tapped="TapGestureRecognizer_Tapped"
NumberOfTapsRequired="1"/>
</Frame.GestureRecognizers>
</Frame>
The Image that im trying to display in the Frame is in the child Frame.
Remember that when I try to display with Frame it wont display the Image.
I have a Grid with its background as black an opacity to 0.5 and in it is there another grid with opacity to 1 and background as White. But the inner grid still shows as its opacity was 0.5
<Grid Grid.ColumnSpan="2" Grid.RowSpan="2" Background="Black" Opacity="0.5" Visibility="{Binding Alertar, Converter={cnv:boolToVisibilityConverter}}">
<Grid.RowDefinitions>
<RowDefinition Height="2*"></RowDefinition>
<RowDefinition Height="5*"></RowDefinition>
<RowDefinition Height="2*"></RowDefinition>
</Grid.RowDefinitions>
<Grid Grid.Row="1" Background="Black" Opacity="1">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="3*"/>
<ColumnDefinition Width="7*"/>
<ColumnDefinition Width="3*"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="10*"/>
<RowDefinition Height="1.5*"/>
</Grid.RowDefinitions>
<Rectangle Grid.ColumnSpan="3" Grid.RowSpan="2" Fill="Black" Opacity="1"/>
<TextBlock Grid.Column="1" Margin="0,15,0,0" Text="{Binding ReporteInconsistencias}" />
<Button Grid.Column="1" Grid.Row="1" Content="Aceptar" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Margin="10"/>
</Grid>
</Grid>
I'm trying to emulate a win8 alert screen there is another way to do this? or How to prevent this inheritance? why this happen?
A little messy but this should work i think. Basically controls are stacked. So having the grid come after the first grid it shouldn't effect the opacity. May need to be tweaked, but something along the lines of this should work:
<Grid Grid.ColumnSpan="2" Grid.RowSpan="2" Visibility="{Binding Alertar, Converter={cnv:boolToVisibilityConverter}}">
<Grid.RowDefinitions>
<RowDefinition Height="2*"></RowDefinition>
<RowDefinition Height="5*"></RowDefinition>
<RowDefinition Height="2*"></RowDefinition>
</Grid.RowDefinitions>
<Grid Grid.RowSpan="3" Background="Black" Opacity="0.5" />
<Grid Grid.Row="1" Background="Black" Opacity="1">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="3*"/>
<ColumnDefinition Width="7*"/>
<ColumnDefinition Width="3*"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="10*"/>
<RowDefinition Height="1.5*"/>
</Grid.RowDefinitions>
<Rectangle Grid.ColumnSpan="3" Grid.RowSpan="2" Fill="Black" Opacity="1"/>
<TextBlock Grid.Column="1" Margin="0,15,0,0" Text="{Binding ReporteInconsistencias}" />
<Button Grid.Column="1" Grid.Row="1" Content="Aceptar" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Margin="10"/>
</Grid>
</Grid>
I have a small screen program which displays patients at the top there is a search button where u can enter by name. I need this search display to be controlled by a button that is, it should not display any records (prev entered) unless click on this button, how would i set this up?
<Grid x:Name="LayoutRoot" Background="LightGray" >
<Grid.RowDefinitions>
<RowDefinition Height="Auto"></RowDefinition>
<RowDefinition Height="Auto"></RowDefinition>
<RowDefinition Height="Auto"></RowDefinition>
<RowDefinition Height="Auto"></RowDefinition>
<RowDefinition Height="Auto"></RowDefinition>
<RowDefinition Height="Auto"></RowDefinition>
<RowDefinition Height="Auto"></RowDefinition>
<RowDefinition Height="Auto"></RowDefinition>
<RowDefinition Height="Auto"></RowDefinition>
<RowDefinition Height="Auto"></RowDefinition>
<RowDefinition Height="Auto"></RowDefinition>
<RowDefinition Height="Auto"></RowDefinition>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"></ColumnDefinition>
<ColumnDefinition Width="*"></ColumnDefinition>
<ColumnDefinition Width="Auto"></ColumnDefinition>
<ColumnDefinition Width="*"></ColumnDefinition>
</Grid.ColumnDefinitions>
<Grid Grid.Row="0" Grid.Column="1" Grid.ColumnSpan="3">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"></ColumnDefinition>
<ColumnDefinition Width="*"></ColumnDefinition>
<ColumnDefinition Width="Auto"></ColumnDefinition>
<ColumnDefinition Width="*"></ColumnDefinition>
<ColumnDefinition Width="Auto"></ColumnDefinition>
<ColumnDefinition Width="*"></ColumnDefinition>
<ColumnDefinition Width="Auto" ></ColumnDefinition>
<ColumnDefinition Width="Auto" ></ColumnDefinition>
<ColumnDefinition Width="Auto" ></ColumnDefinition>
<ColumnDefinition Width="Auto" ></ColumnDefinition>
</Grid.ColumnDefinitions>
<TextBlock Grid.Column="0" Text="First Name:" Margin="3"></TextBlock>
<TextBox Grid.Column="1" x:Name="sTxtFirstName" Margin="3"></TextBox>
<TextBlock Grid.Column="2" Text="Last Name:" Margin="3"></TextBlock>
<TextBox Grid.Column="3" x:Name="sTxtLastName" Margin="3"></TextBox>
<TextBlock Grid.Column="4" Text="Gender:" Margin="3"></TextBlock>
<ComboBox Grid.Column="5" x:Name="sCombGender" Margin="3">
<ComboBoxItem Content=""></ComboBoxItem>
<ComboBoxItem Content="Male"></ComboBoxItem>
<ComboBoxItem Content="Female"></ComboBoxItem>
</ComboBox>
<Button x:Name="btnSearch" Grid.Column="6" Margin="3" Height="30" Command="{Binding CMDSearch}" >
<Button.Content>
<StackPanel Orientation="Horizontal">
<Image Source="/PBM;component/Resources/Images/search.png" VerticalAlignment="Center" Margin="0,0,2,0" ></Image>
<TextBlock Text="Search" Width="50" VerticalAlignment="Center" Margin="1,0,0,0"></TextBlock>
</StackPanel>
</Button.Content>
</Button>
You're going about it all wrong. Only use grid for laying out controls on the screen.
Use a ListBox to show a list of items.
Declare your items in an ObservableCollection.
Use data binding to bind the listbox to the observable collection.
Use C# to manipulate the contents of the list in response to your button click, then the list data appears automatically.