|
You need to periodically calling the service to check if data has changed and then update the UI (that should happen automatically provided INotify and Data binding have been properly implemented).
Another approach could be to use the Silverlight duplex communication channel[^]. This allows the service to tell the UI that something has changed and the UI needs to be refreshed.
The funniest thing about this particular signature is that by the time you realise it doesn't say anything it's too late to stop reading it.
My latest tip/trick
Visit the Hindi forum here.
|
|
|
|
|
I am in Silverlight and I want to determine which key was pressed by the user - and potentially refuse it.
The keydown event returns two events that seem to be useless. The Key property is missing most punctuation marks. The PlatformKeyCode only gives good character codes for capital letters and numbers. Punctuation and the 10-key pad don't work.
I've also tried the TextInput events. These do let you see the text of the key that was pressed, but it seems that by the time these events are called, it is too late to cancel the key stroke.
Have I missed something? or is just one of those things that can't be done in Silverlight?
Brent
Brent
|
|
|
|
|
Try KeyUp.
Purely my observation , but it works better than KeyDown in many cases.
The funniest thing about this particular signature is that by the time you realise it doesn't say anything it's too late to stop reading it.
My latest tip/trick
Visit the Hindi forum here.
|
|
|
|
|
KeyUp is essentially identical to KeyDown except for when the event is triggered. There is still no way to tell that the user pressed the period, question mark, etc. keys.
Brent
|
|
|
|
|
Can this [^]thread be of any assistance to you?
The funniest thing about this particular signature is that by the time you realise it doesn't say anything it's too late to stop reading it.
My latest tip/trick
Visit the Hindi forum here.
|
|
|
|
|
I read this and all of the side posts before posting my question. I read it again. It seems that Microsoft can't understand why anyone would need to type in something besides letters and numbers - or try to prevent a user from typing any garbage they want. I suppose that is too heavy for a silverlight application.
I was just hoping someone here had come up with a work-around.
Brent
Brent
|
|
|
|
|
hi
I am binding label through
<Label Content="{Binding Path=OrderDetails.OrderPaymentId}" FontSize="20">
now i want if the value of OrderDetails.OrderPaymentId=0
then the visibility of label become collapsed
please help how to do this using style or trigger
|
|
|
|
|
You need to create a value converter class, and bind the Visibility property to it in your xaml.
.45 ACP - because shooting twice is just silly
-----
"Why don't you tie a kerosene-soaked rag around your ankles so the ants won't climb up and eat your candy ass..." - Dale Earnhardt, 1997
-----
"The staggering layers of obscenity in your statement make it a work of art on so many levels." - J. Jystad, 2001
|
|
|
|
|
<Label.Style>
<Style>
<Style.Triggers>
<DataTrigger
Binding="{Binding Path=OrdeDetails.OrderPaymentId}" Value="0">
<Setter Property="Label.Visibility" Value="Collapsed"></Setter>
</DataTrigger>
</Style.Triggers>
</Style>
</Label.Style>
|
|
|
|
|
Or, like John said, write a value converter...
1) Create a class that inherits from IValueConverter
2) Implement the Convert function such that it returns Visibility.Collapsed for 0, or Visibility.Visible for anything else.
3) Create an instance of that class in your resources section in the XAML, and give it a key
4) Reference it in the binding:
{Binding OrderDetails.OrderPaymentId,Converter={StaticResource MyConverter}}
|
|
|
|
|
Converter works:
<UserControl.Resources>
<BooleanToVisibilityConverter x:Key="MyBooleanToVisibilityConverter" />
</UserControl.Resources>
...
<Button Name="btnSomeButton" HorizontalAlignment="Left" Grid.Row="0" Grid.Column="0" Click="btnSomeButton_Click" Width="40px" Height="40px" Visibility="{Binding Path=bIsVisible, ElementName=SomeControl, Mode=TwoWay}" >
<Image Source="..\Icons\SomeIcon.jpeg" ToolTip="SomeButton" />
</Button>
In above example, bIsVisible is a simple CLR property of type Boolean.
But as with any other "Enum", you do NOT need a converter, you could have binded a property of type "System.Windows.Visibility" directly to your control:
<Button Name="btnSomeCmd" HorizontalAlignment="Left" Grid.Row="0" Grid.Column="3" Click="btnSomeCommand_Click" Width="40px" Height="40px" Visibility="{Binding Path=SomeButtonVisibility, ElementName=SomeControl, Mode=TwoWay, diagnostics:PresentationTraceSources.TraceLevel=High}" >
<Image Source="..\Icons\...; ToolTip="SomeCommand" />
</Button>
In above example, SomeButtonVisibility is a dependency property of type System.Windows.Visibility. I used a Dependency Property as supposed to a common CLR property only because I want take advantage of "Two Way" notification.
dev
|
|
|
|
|
You can try both the Solution given above. Both are perfect answer.
|
|
|
|
|
Hi All,
I have a wpf text box in which i am unable to press enter key, if i press its not doing anything,, actually i need if the user press enter button a new line should be inserted but its not happening..
do i need to do that in the Keydown event (finding the key pressed is enter)
or is there any other way. Please let me know.
Thanks in advance
|
|
|
|
|
|
Thanks Mr Kubajzz for your time and for your help.
I didnt set that property when i set that it works fine.
Thanks again
|
|
|
|
|
|
I am trying to build a sideways scrolling chart using SilverLight 3. I want to display multiple pieces of data that span a set of numerical values; however, the values are not parallel as they are in a bar chart that has a standard base value for each piece of data. Think of it as a Gantt chart with the top scale being zipcodes and the data being cities that contain the zipcodes. The data would be represented as a horizontal bar that spans a set of zipcodes. I actually looked into modifying a Gantt chart; however, since its primary function is to display data over a period of time, I am not certain if it will work.
Can anybody point me in a possible direction to solve my problem?
Using C# in SilverLight 3
Thanks for your time.
|
|
|
|
|
Do I need to add more information to make my needs a bit more clear?
|
|
|
|
|
How can we add toggle button in silverlight grid column?
|
|
|
|
|
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<ToggleButton Grid.Row="0" Grid.Column="0" />
</Grid>
|
|
|
|
|
My application using 'Pages' and i using wpf navigation to navigate between the pages.
I cant to control the page size and the page location on the screen and i don't know how - because i don't see that there is option to setup the page container.
I see that the page himself has the edit option of width and height - but i want that the size will be as 'auto' mode - and i want to have the ability to use 'auto' of the size change ( case the user will change the page container size => the page size will be change automatically also )
|
|
|
|
|
I have set up the following tooltip to show the x and y values of datapoints within a WPF linechart, what I would also like to do is show the index within the collection that the point uses. How do I show this please?
<Style x:Key="ToolTipDataPointStyle" TargetType="chartingToolkit:LineDataPoint">
<Setter Property="Background" Value="Green"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="chartingToolkit:LineDataPoint">
<Grid x:Name="Root" Opacity="1">
<ToolTipService.ToolTip>
<StackPanel Margin="2,2,2,2">
<ContentControl Content="{Binding HoleSize}" ContentStringFormat="Hole Size: {0}" />
<ContentControl Content="{Binding PulseWidth}" ContentStringFormat="Pulse Width: {0}"/>
<!--<ContentControl Content="{Binding Path.[0]}" ContentStringFormat="Data = {0}"/>-->
</StackPanel>
</ToolTipService.ToolTip>
<Ellipse StrokeThickness="{TemplateBinding BorderThickness}" Stroke="{TemplateBinding BorderBrush}" Fill="{TemplateBinding Background}"/>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
|
|
|
|
|
Hi surfluds,
May be this link could help you.
http://endofstream.com/charts-creating-custom-style-for-linedatapoint/
|
|
|
|
|
I fancy expanding my Very Limited knowledge and would appreciate a link to an Idiots Guide in order to have a play around and maybe make a few basic attempts at prettiness.
Recommendations?
------------------------------------
I will never again mention that I was the poster of the One Millionth Lounge Post, nor that it was complete drivel. Dalek Dave
CCC League Table Link
CCC Link[ ^]
|
|
|
|
|
Silverlight or WPF? The choice is very dependent on the tech.
|
|
|
|
General 
News 
Suggestion 
Question 
Bug 
Answer 
Joke 
Praise 
Rant 
Admin 
Submit an article or tip
