silverlight-4.0

问题 I need to get the values from Listbox selected items. Note that, the data templates are in data bound. here is the xaml: <ListBox Name="AppointmentResultsData" ItemsSource="{Binding}" Height="650" Width="480" Margin="24,0,0,0" Foreground="#CBF7FA" SelectionChanged="AppointmentResultsData_SelectionChanged"> <ListBox.ItemTemplate> <DataTemplate> <Grid> <Grid.ColumnDefinitions> <ColumnDefinition/> </Grid.ColumnDefinitions> <Grid.RowDefinitions> <RowDefinition/> <RowDefinition/> <RowDefinition/>

问题 I have the following xaml and I am trying to get to the Grid to make it invisible at some point in my code if the code reaches there. Being new to .net and silverlight and xaml I am not sure why my code behind doesn't find Grid Controlpanel please see my xaml code here <UserControl xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas

问题 I am converting a SL3 application to SL4 and facing some issues. Can anyone provide me the namespace or DLL name for ValueConversion. I am getting error on the following statement. [ValueConversion(typeof(ToolType), typeof(bool))] Thanks for sharing your time. 回答1: This class is not part of Silverlight Runtime Classes now. it was there in System.Windows.Data namespace before. Ref: http://msdn.microsoft.com/en-us/library/system.windows.data.valueconversionattribute.aspx you can use

问题 I have discovered an odd behaviour when replacing a DataGridCheckBoxColumn against a DataGridTemplateColumn that contains a Checkbox. <sdk:DataGrid Grid.Column="0" IsReadOnly="{Binding IsInReadOnlyMode}"> <sdk:DataGrid.Columns> <sdk:DataGridCheckBoxColumn Header="Sales" Binding="{Binding Path=Sales}" /> </sdk:DataGrid.Columns> </sdk:DataGrid> When the DataGrid is readonly then the checkbox is also disabled. The code above works correct. Now if I want to achieve the same thing by using

问题 LoadOperation on the client side returns null? How can I fix it? Is my code correct? Is it a best practice? Serverside (Domain service: public IQueryable<State> GetStates() { return this.ObjectContext.States.Include("Country") ; } //----------------------------------------------------------------------- Clientside LoadOperation<State> loadOp; public IEnumerable<State> Entities() { DSCommon _context = new DSCommon(); loadOp = _context.Load(_context.GetStatesQuery()); loadOp.Completed +=

问题 After downloading IE9, I found that running any Silverlight page breaks (only in IE9). After clicking "yes" to debug, I was amused to see that the Silverlight.js file is choking on some JavaScript that was put in as a hack to work with previous versions of IE. What would the fastest way to fix this be? Is there an updated Silverlight.js file I can download from somewhere? Should I use a meta tag to tell IE to render as though it were version 7 or 8? Thanks! 回答1: Silverlight.js is for helping

问题 The Silverlight 4 DescriptionViewer Control displays a Description in a Tooltip: The syntax is pretty easy: Add Namespace xmlns:dataInput="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Data.Input" and the following XAML to your UserControl: <dataInput:DescriptionViewer Description="Some hints on user input etc." /> Unfortunately, some users click on the displayed Icon (since it even hovers by default) which instantly closes the Tooltip (the actual and only information

问题 So if I created a Silverlight app, can I take the markup + code and put it in a WPF app? I was just curious if we decide to use Silverlight, whether I could also take advantage of WPF Windows clients too. 回答1: This MSDN article may be a good reference as to where SL4 and WPF4 diverge: WPF Compatibility 回答2: You could always make your Silverlight application run Out-Of-Browser, just keep in mind you have a security sandbox which you dont have with WPF. Also Silverlight would be able to run on

问题 I have a ListBox that uses a WrapPanel for its ItemsPanel , a custom ItemTemplate , and a custom ItemContainerStyle . The ItemContainerStyle's template contains a selection box that shows up when an item is selected. The graphics designer would like this selection box to overlap sibling items in the ListBox like it's an overlay. The first thing I tried was setting the Canvas.ZIndex property of the ItemContainer in the Selected state. That did not seem to have an effect. Then I read that list

问题 I have a web form in silverlight. On action of some button click i want to update a another control like chart, Textbox etc In the mean time when it fills the chart or textbox, i need to show a busy indicator Busy indicator should show first in screen behind the chart value should get update Chart value will reflect in screen Busy indicator should hide But the problem is when i try using Thread I am getting an error "Invalid cross-thread access.". As the thread is accessing the UI control.