Omniscient's Foundation - Blog - Latest comments

In response to: Store AppFabric cache structure

apple ipad technology [Visitor] — Tue, 29 Jun 2010 20:24:04 +0000

nice information ...i like this blog...keep your posting with smile :D

In response to: Silverlight Configuration (almost) like regular .NET

Dave [Member] — Wed, 02 Jun 2010 14:55:03 +0000

As I said, I committed the changes so that the ConfigurationManager now works a bit more like its .NET counterpart. For example, the signature is now the same: object GetSection(string sectionName);

Plus, the configuration file now asks for a valid configuration section:

<configuration>
<configSections>
<section name="mySection" type="assembly-qualified name for an IConfigurationSectionHandler" />
</configSections>
...
<mySection value="abc" />
</configuration>

In response to: Silverlight 3, databinding and anonymous types

Dave [Member] — Tue, 18 May 2010 19:58:58 +0000

Ah! So anonymous types are internal by default... Something I wasn't aware of. Which probably leads to the more general statement : You can't bind to internal types.

Thanks, very helpful.

In response to: Silverlight 3, databinding and anonymous types

Jason Jarrett [Visitor] — Tue, 18 May 2010 19:47:20 +0000

Place this in your AssemblyInfo.cs.

[assembly: System.Runtime.CompilerServices.InternalsVisibleTo("System.Windows")]

Should work.

In response to: Command pattern in Silverlight

Dave [Member] — Thu, 17 Dec 2009 00:47:50 +0000

When you set the datacontext, is the command object instantiated? That's a common mistake. Here's some code:

Partial Public Class MainPage
Inherits UserControl

Private _command As Command

Public Sub New()
InitializeComponent()

'wrong...
'Me.DataContext = Me
'_command = New Command()

_command = New Command()
Me.DataContext = Me
End Sub

Public ReadOnly Property Command() As ICommand
Get
Return _command
End Get
End Property
End Class

In response to: Command pattern in Silverlight

Rodney Stephens [Visitor] — Wed, 16 Dec 2009 22:45:55 +0000

Can't get it to work. Command property always returns nothing. Here is my code. Any help would be appreciated.
Namespace CommandControls
Public Class CommandButton : Inherits System.Windows.Controls.Button
Public Shared ReadOnly CommandProperty As DependencyProperty
Public Shared ReadOnly CommandParameterProperty As DependencyProperty

Shared Sub New()
CommandProperty = DependencyProperty.Register("Command", GetType(ICommand), GetType(CommandButton), _
New PropertyMetadata(Nothing, New PropertyChangedCallback(AddressOf OnCommandChanged)))

CommandParameterProperty = DependencyProperty.Register("CommandParam", GetType(Object), GetType(CommandButton), _
New PropertyMetadata(Nothing, New PropertyChangedCallback(AddressOf OnCommandParamChanged)))
End Sub

Public Sub New()
MyBase.New()

AddHandler Me.Click, New RoutedEventHandler(AddressOf CommandButton_Click)
End Sub

Private Sub CommandButton_Click(ByVal sender As Object, ByVal e As RoutedEventArgs)
If (Command IsNot Nothing) Then
Command.Execute(Me.CommandParam)
End If
End Sub

Public Property Command() As ICommand
Get
Return DirectCast(GetValue(CommandProperty), ICommand)
End Get
Set(ByVal Value As ICommand)
SetValue(CommandProperty, Value)
End Set
End Property

Public Property CommandParam() As Object
Get
Return GetValue(CommandParameterProperty)
End Get
Set(ByVal Value As Object)
SetValue(CommandParameterProperty, Value)
End Set
End Property

Private Shared Sub OnCommandChanged(ByVal sender As DependencyObject, ByVal e As DependencyPropertyChangedEventArgs)
Dim button As CommandButton = DirectCast(sender, CommandButton)
button.UpdateCanExecute()
End Sub

Private Shared Sub OnCommandParamChanged(ByVal sender As DependencyObject, ByVal e As DependencyPropertyChangedEventArgs)
Dim button As CommandButton = DirectCast(sender, CommandButton)
button.UpdateCanExecute()
End Sub

Private Sub UpdateCanExecute()
Dim canExecute As Boolean = True

If Command Is Nothing Then
canExecute = False
End If

If canExecute Then
canExecute = Command.CanExecute(CommandParam)
Me.IsEnabled = canExecute
End If
End Sub
End Class
End Namespace

In response to: Silverlight Configuration (almost) like regular .NET

Dave [Member] — Fri, 18 Sep 2009 14:22:12 +0000

I'm currently improving ConfigurationManager so that it mimics even more precisely what .NET's ConfigurationManager does. I'll post changes to it here later today.

In response to: Visual Studio Development Server and HTTPS

Dave [Member] — Wed, 15 Jul 2009 14:52:42 +0000

At this point in time, yes, this is impossible to do so.