I am switching to using a ProgressBar/Grid in the Frame of my application instead of via a Popup. I used this stack overflow post to get it working : Dynamic Progress bar In WP7
However, When using the example I no longer have page transitions. It will be hard for me to warrant the use of it if page transitions will not work properly. Is there something I'm missing? I tried setting the TargetType to "TransitionFrame", but that does not work properly and throws a XAML parse exception (for the namespace Microsoft.Phone.Controls.PhoneApplicationPages)
<ControlTemplate x:Key="LoadingIndicatorTemplate" TargetType="toolkit:TransitionFrame" >
<Grid x:Name="ClientArea">
<ContentPresenter />
<Grid x:Name="ProgressGrid" Background="Black" Opacity="0.85" Visibility="Collapsed" Loaded="ProgressGrid_Loaded">
<StackPanel x:Name="Loading" VerticalAlignment="Center" HorizontalAlignment="Center" Margin="10">
<TextBlock HorizontalAlignment="Center" Name="tbLoading" Text="Loading" Style="{StaticResource TextNormalStyle}" />
<ProgressBar Style="{StaticResource PerformanceProgressBar}" HorizontalAlignment="Center" Name="pbLoading" Width="400" Margin="10" IsIndeterminate="False" />
</StackPanel>
</Grid>
</Grid>
</ControlTemplate>
For using the Toolkit's TransitionFrame for page transitions as well as a custom ControlTemplate to show your progress bar, you must specify the TargetType for the ControlTemplate as toolkit:Transitionframe where toolkit is defined as:
xmlns:toolkit="clr-namespace:Microsoft.Phone.Controls;assembly=Microsoft.Phone.Controls.Toolkit"
The rest of the problem is that your ControlTemplate does not specify the template parts that the TransitionFrame requires. It requires two parts of type ContentPresenter named FirstContentPresenter and SecondContentPresenter. Change your ControlTemplate to the following to bring page transitions back:
<ControlTemplate x:Key="LoadingIndicatorTemplate" TargetType="toolkit:TransitionFrame">
<Grid x:Name="ClientArea">
<ContentPresenter x:Name="FirstContentPresenter" />
<ContentPresenter x:Name="SecondContentPresenter" />
<Grid x:Name="ProgressGrid"
Background="Black"
Opacity="0.85"
Visibility="Collapsed"
Loaded="ProgressGrid_Loaded">
<StackPanel x:Name="Loading"
VerticalAlignment="Center"
HorizontalAlignment="Center"
Margin="10">
<TextBlock x:Name="tbLoading"
HorizontalAlignment="Center"
Text="Loading"
Style="{StaticResource BoaTextNormalStyle}" />
<toolkit:PerformanceProgressBar x:Name="pbLoading"
HorizontalAlignment="Center"
Width="400"
Margin="10"
IsIndeterminate="False" />
</StackPanel>
</Grid>
</Grid>
</ControlTemplate>
NOTE: Jeff Wilcox's PerformanceProgressBar is now part of the Silverlight Toolkit, so you can use it directly as shown above.
If you're putting the progressbar on the frame but then animating the page then the animation won't include the progressbar.
Why not just put the progressbar on the page?
Related
I have a little question. I'm new to WPF and a strange thing happened to me. In the designer everything looks fine, but as soon as I start the application, a piece ,,cuts off"(via.photo) and it looks pretty bad. Could it be that the application is not responsive?
My XAML code:
<TabItem Header="TabItem"
Visibility="Hidden"
x:Name="Home_Page"
Background="{x:Null}"
BorderBrush="{x:Null}" Height="Auto"
Width="Auto"
>
<Border
Background="Black"
HorizontalAlignment="Center"
VerticalAlignment="Center"
Width="1340"
Height="1100"
CornerRadius="20"
>
<Border
Background="White"
CornerRadius="20"
Height="700"
Width="500"
Margin="0" HorizontalAlignment="Center" VerticalAlignment="Center"
>
<Grid
>
<TextBlock
Text="Welcome"
Width="200"
Height="200"
Foreground="Black"
FontSize="50" FontFamily="/Peel_App;component/Fonts/#Kashima Brush Demo"
>
</TextBlock>
</Grid>
</Border>
</Border>
</TabItem>
After what I edited app:
Your code has a few issues:
You're hardcoding the Margin values to position your controls. Instead, you should use proper panels (DockPanel, WrapPanel, and Grid). Use Margin property to set margin, not a position.
Use HorizontalAlignment and VerticalAlignment properties to position your elements, thus your UI would be more responsive and user-friendly.
To be able to view, how your window and its content would look like - try to set d:DesignHeght and d:DesignWidth properties on a window. Try to Google how to use them.
In the end, your code should look like following:
<TabItem Header="TabItem"
Visibility="Hidden"
x:Name="Home_Page"
Background="{x:Null}"
BorderBrush="{x:Null}"> <!-- Properties order is a bit confusing, it is better to order them by priority, or just alphabetically. -->
<Border Background="Black">
<Border Background="White"
CornerRadius="20"
Margin="0,0,93,118"> <!-- Should it have such values? Maybe just somenthing like Margin="0 0 90 120"? -->
<Grid>
<TextBlock Text="Welcome"
Foreground="Black"
FontSize="50"
FontFamily="/Peel_App;component/Fonts/#Kashima Brush Demo"/>
</Grid>
</Border>
</Border>
</TabItem>
I have a simple Border and Grid that is positioned within a Canvas container in WPF. The position of the control changes during runtime hence why it resides in the canvas.
The XAML for the control looks something like this:
<Border Name="PopupArea"
Width="130"
Height="150"
BorderBrush="Black"
BorderThickness="2"
CornerRadius="5">
<Border.Background>
<SolidColorBrush Opacity="0.5" Color="Black" />
</Border.Background>
<Grid>
<StackPanel>
<Border HorizontalAlignment="Center">
<Border.Effect>
<DropShadowEffect />
</Border.Effect>
<TextBlock FontWeight="Bold" Style="{StaticResource SmallWhiteFont}">HELLO WORLD</TextBlock>
</Border>
</StackPanel>
</Grid>
</Border>
However I now need to be able to create a Collection of the above control which I create and destory as required at runtime in code.
My questions are :
A. What is the best way to compose my XAML to create multiple instances of the above control through code? Do I just declare a ContentControl in the resources?
B. Assuming I am correct and a resource template is required. How do I actually use it to create multiple instances of the control in code?
Within XAML I would use an ItemTemplate.
Then I would bind ItemsSource to some observable collection on my viewmodel.
Here's an example taken from MSDN:
<ListBox Width="400" Margin="10"
ItemsSource="{Binding Source={StaticResource myTodoList}}">
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel>
<TextBlock Text="{Binding Path=TaskName}" />
<TextBlock Text="{Binding Path=Description}"/>
<TextBlock Text="{Binding Path=Priority}"/>
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
NOTE:
It is more common to define a DataTemplate in the resources section so it can be a reusable object.
<ListBox Width="400" Margin="10"
ItemsSource="{Binding Source={StaticResource myTodoList}}"
ItemTemplate="{StaticResource myTaskTemplate}"/>
I would like to have a popup window. Even though I am using MvvmCross, it will strictly run on Android. In Windows Store, you can do the following with xaml:
<Popup VerticalOffset="300" HorizontalOffset="200" x:Name="SigPopup" >
<Border BorderBrush="{StaticResource ApplicationForegroundThemeBrush}"
Background="{StaticResource ApplicationPageBackgroundThemeBrush}"
BorderThickness="1">
<StackPanel>
<StackPanel Orientation="Horizontal" >
<Button x:Name="btnAccept" Content="Accept" Click="btnAccept_Click"/>
<Button x:Name="btnCancel" Grid.Column="1" Content="Cancel" Click="btnCancel_Click"/>
<TextBlock x:Name="txtSigner" Text="Shipper" Style="{StaticResource SubheaderTextBlockStyle}" Margin="25,3,0,0" />
</StackPanel>
<!-- Inking area -->
<Border BorderBrush="{StaticResource ApplicationForegroundThemeBrush}"
Background="{StaticResource ApplicationPageBackgroundThemeBrush}"
BorderThickness="2" Width="750" Height="175">
<Grid x:Name="inkPanel" Margin="5">
<!-- Inking area -->
<Canvas x:Name="InkCanvas" Background="White" Margin="5" />
</Grid>
</Border>
</StackPanel>
</Border>
</Popup>
You can use this to popup a window to collect a Signature. There is an accept and cancel button you can wire up accordingly. Is there any way to do this using MvvmCross? I have watched the ViewModel demo and saw where you could draw rectangles and put data in them and it was bound, but it didn't show how to make them go away once you were done. I had this vision of being able to popup some sort of child ViewModel with a SignatureWidget in it and collect a signature then close the popup. Can this be done using MvvmCross?
there is a Xamarin Component available.
Is this something that fits your need?
http://components.xamarin.com/view/signature-pad
Regards,
Benjamin
So I have a rather interesting question. I have a viewbox that has a few elements in it (a custom user control for an image, a canvas, a label, and a textbox). What I want is to try and have all elements scale with the viewbox, but I want the label and the textbox to have a "Max Size." I have tried using a max width and height on these controls but they seem to ignore it. If someone could take a look at my code below an slap me for what I am doing wrong that would be appreciated.
<Viewbox Name="myViewBox" Stretch="Uniform">
<!--Grid used to track mouse movements in this element for other reasons -->
<Grid Name="grdViewboxGrid" MouseMove="trackMouse">
<Canvas Name="cvsViewboxCanvas" MinWidth="270" MinHeight="270"
VerticalAlignment="Top" HorizontalAlignment="Center"
Panel.ZIndex="1" Background="Black"
MouseUp="Canvas_MouseUp"
MouseMove="Canvas_MouseMove">
<Grid>
<!--Would rather not post here for Intellectual Property reasons-->
<!-- Extension of the image control -->
<CustomImageUserControl />
<Grid>
<Grid Width="{Binding LabelWidthPercentage}"
MaxWidth="50"
Height="{Binding LabelHeightPercentage"
MaxHeight="26"
SnapsToDevicePixels="True" VerticalAlignment="Top"
HorizontalAlignment="Left" Margin="5" IsHitTestVisible="False">
<Label Name="lblViewboxLabel" HorizontalAlignment="Left"
Padding="5,5,5,0" Margin="0,5,0,0"
Style="{x:Null}"
Content="{Binding lblContent}" />
</Grid>
<Grid>
<Grid Width="{Binding TextBoxWidthPercentage}"
MaxWidth="156"
Height="{Binding TextBoxHeightPercentage}"
MaxHeight="45"
SnapsToDevicePixels="True" Vertical="Top"
HorizontalAlignment="Right" Margin="5" IsHitTestVisible="False">
<Border Style="{DynamicResource CustomBorder}" />
<Grid>
<Textbox Name="txtViewboxTextBox" Text="{Binding txtViewbox}" />
</Grid>
</Grid>
</Grid>
</Grid>
</Grid>
</Canvas>
</Grid>
</Viewbox>
If I am not including something that is needed please let me know and I will update my question. Any help would be greatly appreciated this is now day 4 on this issue sadly :-(
I am not sure why you need so many overlapping Grids, but I hope that I can answer your question nevertheless:
In order to have the label left of the text box and to assign a maximum width to each of these two controls, use a Grid with two columns and set the MaxWidth property for each column. Then, assign the label to the left column (the one with index 0) and assign the text box to the right column (index 1). The corresponding code fragment looks like this:
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition MaxWidth="30"/>
<ColumnDefinition MaxWidth="156" MinWidth="30"/>
</Grid.ColumnDefinitions>
<Label Grid.Column="0" x:Name="lblViewboxLabel" HorizontalAlignment="Left" Foreground="Yellow"
Padding="5,5,5,0" Margin="0,5,0,0"
Style="{x:Null}"
Content="{Binding lblContent}" />
<TextBox Grid.Column="1" x:Name="txtViewboxTextBox" Text="{Binding txtViewbox}" Background="Orange"/>
</Grid>
I also have assigned a MinWidth to the right column; this is necessary to make sure that the text box does not completely disappear if it contains no text.
Scenario:
Currently I have this XAML code:
<Button Content="_Cancel" IsCancel="True" Command="{Binding Path=CancelCommand}" Margin="5">
<Button.ContentTemplate>
<DataTemplate>
<TextBlock Margin="10,0,10,0" />
</DataTemplate>
</Button.ContentTemplate>
</Button>
Obviously the accesskey (the 'c' key: _Cancel) doesn't work in combination with the TextBlock. I actually think the TextBlock should be a ContentPresenter (below), but this crashes my Visual Studio 2010 instance every time.
<ContentPresenter Margin="10,0,10,0" RecognizesAccessKey="True" />
Question:
What's the best solution to use accesskeys on a WPF Button with a ContentTemplate?
Thanks in advance!
Instead of TextBlock use AccessText thus:
<Button Content="_Cancel" IsCancel="True" Command="{Binding Path=CancelCommand}" Margin="5">
<Button.ContentTemplate>
<DataTemplate>
<AccessText Margin="10,0,10,0" Text="{Binding}"/>
</DataTemplate>
</Button.ContentTemplate>
</Button>
PS. ContentPresenter should be used inside a ControlTemplate to display content according to a DataTemplate. If you use it within a DataTemplate it causes infinite recursion as the DataTemplate is invoked over and over again.