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Delay windows phone 8 progress-bar appearance


Delay windows phone 8 progress-bar appearance

By : Nino b
Date : November 22 2020, 11:17 AM
around this issue How about using different Timer operating on separate thread:
code :
System.Threading.Timer myTimer = null;
private bool _isProgressBarLoading = false;
public bool IsProgressBarLoading
{
    get { return _isProgressBarLoading; }
    set
    {
       if (_isProgressBarLoading != value)
       {
           if (value)
           {
                if (myTimer == null)
                {
                   myTimer = new System.Threading.Timer(Callback, null, 3000, Timeout.Infinite);
                }
                else myTimer.Change(3000, Timeout.Infinite);
                // it should also work if you create new timer every time, but I think it's
                // more suitable to use one
           }
           else
           {
                _isProgressBarLoading = false;
                NotifyOfPropertyChange(() => IsProgressBarLoading);
           }
       }
    }
}

private void Callback(object state)
{
   Deployment.Current.Dispatcher.BeginInvoke(() =>
   {
       _isProgressBarLoading = true;
        NotifyOfPropertyChange(() => IsProgressBarLoading);
    });
}
if (value)
{
    var timer = new DispatcherTimer { Interval = TimeSpan.FromMilliseconds(2000) };
    timer.Tick += delegate
    {
        timer.Stop();
        _isProgressBarLoading = true;
        NotifyOfPropertyChange(() => IsProgressBarLoading);
    };
    timer.Start();
}
else
{
    _isProgressBarLoading = false;
    NotifyOfPropertyChange(() => IsProgressBarLoading);
}


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progress bar in windows phone

progress bar in windows phone


By : Memo Flores
Date : March 29 2020, 07:55 AM
I hope this helps you . Bind the Visibility on the control either to a Visibility or to a bool property in your ViewModel. Make sure that the ViewModel implements INotifyPropertyChanged.
The moment you will change the property in the ViewModel to be collapsed (or false, if you choose to use bool through a converter), the control that is bound to it will update as well.
how to show green progress according to my Download Progress Percentage in windows phone 8

how to show green progress according to my Download Progress Percentage in windows phone 8


By : Gaurav Joshi
Date : March 29 2020, 07:55 AM
this one helps. We can show the green progress bar in windows phone 8, i have successfully done.
i made the IsDeterminate Proterty as false and bind the progresschanged event values to the Value property of my progressBar. its working superb.
code :
<ProgressBar x:Name="myProgressBar" IsIndeterminate="True" VerticalAlignment="Center" Visibility="Visible" Width="900" TextOptions.TextHintingMode="Animated" CharacterSpacing="2"/>
How to change the appearance of a MenuFlyout in Windows Phone?

How to change the appearance of a MenuFlyout in Windows Phone?


By : Don S
Date : March 29 2020, 07:55 AM
Hope that helps The MenuFlyout has a standard Style which is set for TargetType="MenuFlyoutPresenter" and can be found in ..\Program Files (x86)\Windows Phone Kits\8.1\Include\abi\Xaml\Design\generic.xaml (I will not copy/paste here because it's quite long). This Style defines a ControlTemplate which you can modify to set how the MenuFlyout behaves when it changes to BottomPortrait VisualState.
From what I can see in the Calendar app, the MenuFlyout kind of flips when you open it. In predefined Style it first displays the top border and then draws the rest from top to bottom.
code :
// ... rest of the code
<Border x:Name="CenterBorder" FlowDirection="LeftToRight" BorderBrush="{TemplateBinding Background}">
    <Border.Projection>
        <PlaneProjection RotationX="-90"/>
    </Border.Projection>
// ... rest of the code
// ... rest of the code
<VisualState x:Name="BottomPortrait">
    <Storyboard>
        <DoubleAnimation Duration="0:0:0.18" 
                         To="0" 
                         Storyboard.TargetProperty="(UIElement.Projection).(PlaneProjection.RotationX)" 
                         Storyboard.TargetName="CenterBorder" />
     </Storyboard>
</VisualState>
// ... rest of the code
<Style TargetType="MenuFlyoutPresenter">
    <!-- OTHER PROPERTY SETTERS -->
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="MenuFlyoutPresenter">
                <Border x:Name="OuterBorder" FlowDirection="LeftToRight" BorderBrush="{TemplateBinding BorderBrush}">
                    <VisualStateManager.VisualStateGroups>
                        <VisualStateGroup x:Name="PlacementStates">
                            <VisualState x:Name="None" />
                            <VisualState x:Name="TopPortrait">
                                <!-- TOP PORTRAIT STORYBOARD -->
                            </VisualState>
                            <VisualState x:Name="BottomPortrait">
                                <Storyboard>
                                    <DoubleAnimation Duration="0:0:0.18" 
                                                     To="0" 
                                                     Storyboard.TargetProperty="(UIElement.Projection).(PlaneProjection.RotationX)" 
                                                     Storyboard.TargetName="CenterBorder" />
                                </Storyboard>
                            </VisualState>
                            <VisualState x:Name="LeftLandscape">
                                <!-- LEFT LANDSCAPE STORYBOARD -->
                            </VisualState>
                            <VisualState x:Name="RightLandscape">
                                <!-- RIGHT LANDSCAPE STORYBOARD -->
                            </VisualState>
                        </VisualStateGroup>
                    </VisualStateManager.VisualStateGroups>
                    <Border.RenderTransform>
                        <ScaleTransform x:Name="OuterScaleTransform" />
                    </Border.RenderTransform>
                    <Border x:Name="CenterBorder" FlowDirection="LeftToRight" BorderBrush="{TemplateBinding Background}">
                        <Border.Projection>
                            <PlaneProjection RotationX="-90"/>
                        </Border.Projection>
                        <StackPanel x:Name="InnerBorder" FlowDirection="{TemplateBinding FlowDirection}" Background="{TemplateBinding Background}">
                            <StackPanel.RenderTransform>
                                <ScaleTransform x:Name="InnerScaleTransform" />
                            </StackPanel.RenderTransform>
                            <ItemsPresenter x:Name="ItemsPresenter" Margin="{TemplateBinding Padding}" FlowDirection="{TemplateBinding FlowDirection}" />
                        </StackPanel>
                    </Border>
                </Border>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>
MenuFlyout mf = (MenuFlyout)this.Resources["AddButtonFlyout"];
mf.Placement = FlyoutPlacementMode.Bottom;

Frame fr = Window.Current.Content as Frame;
mf.ShowAt(fr);
Changing appearance of button when pressed in Windows Phone 8.1

Changing appearance of button when pressed in Windows Phone 8.1


By : 謝政佑
Date : March 29 2020, 07:55 AM
I wish this help you KeyDown and KeyUp are keyboard events. They should get hit if the user sets the keyboard focus to the button and types. This probably isn't what you want.
To change the button's appearance when it is pushed you'll want to edit the button's style and modify its visual states. Select your button, right click, and choose Edit Template... to create a copy of the default template, then go to the default template and edit the section to make the changes you want.
code :
<VisualState x:Name="Pressed">
    <Storyboard>
        <PointerDownThemeAnimation Storyboard.TargetName="Grid"/>
        <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Foreground" Storyboard.TargetName="ContentPresenter">
            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource ButtonPressedForegroundThemeBrush}"/>
        </ObjectAnimationUsingKeyFrames>
        <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Background" Storyboard.TargetName="Border">
            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource ButtonPressedBackgroundThemeBrush}"/>
        </ObjectAnimationUsingKeyFrames>
        <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(Border.BorderBrush)" Storyboard.TargetName="Border">
            <DiscreteObjectKeyFrame KeyTime="0">
                <DiscreteObjectKeyFrame.Value>
                    <SolidColorBrush Color="Yellow"/>
                </DiscreteObjectKeyFrame.Value>
            </DiscreteObjectKeyFrame>
        </ObjectAnimationUsingKeyFrames>
    </Storyboard>
</VisualState>
Delay in windows phone 8.1

Delay in windows phone 8.1


By : DLooi
Date : March 29 2020, 07:55 AM
this one helps. You should use the await keyword to wait for the task to complete; Wait() should be used rarely, and with extreme caution, because it can make your app appear unresponsive or even cause deadlocks.
code :
// 'async' keyword is important!
async Task foo()
{
  bleep.Play(); // play bleep
  await System.Threading.Tasks.Task.Delay(1100);
  this.Frame.Navigate(typeof(MainPage.ItemPage));
}
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