Application.Properties 属性
定义
重要
一些信息与预发行产品相关,相应产品在发行之前可能会进行重大修改。 对于此处提供的信息,Microsoft 不作任何明示或暗示的担保。
获取应用程序范围属性的集合。
public:
property System::Collections::IDictionary ^ Properties { System::Collections::IDictionary ^ get(); };
public System.Collections.IDictionary Properties { get; }
member this.Properties : System.Collections.IDictionary
Public ReadOnly Property Properties As IDictionary
属性值
一个包含应用程序范围的属性的 IDictionary。
示例
以下示例演示如何使用 Properties创建和使用应用程序范围属性。
<Application x:Class="CSharp.App"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
StartupUri="MainWindow.xaml"
Startup="App_Startup"
>
</Application>
using System;
using System.Windows;
namespace CSharp
{
public partial class App : Application
{
void App_Startup(object sender, StartupEventArgs e)
{
// Parse command line arguments for "/SafeMode"
this.Properties["SafeMode"] = false;
for (int i = 0; i != e.Args.Length; ++i)
{
if (e.Args[i].ToLower() == "/safemode")
{
this.Properties["SafeMode"] = true;
break;
}
}
}
}
}
Imports System.Windows
Namespace VisualBasic
Partial Public Class App
Inherits Application
Private Sub App_Startup(ByVal sender As Object, ByVal e As StartupEventArgs)
' Parse command line arguments for "/SafeMode"
Me.Properties("SafeMode") = False
Dim i As Integer = 0
Do While i <> e.Args.Length
If e.Args(i).ToLower() = "/safemode" Then
Me.Properties("SafeMode") = True
Exit Do
End If
i += 1
Loop
End Sub
End Class
End Namespace
<Window x:Class="CSharp.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Loaded="MainWindow_Loaded"
>
<Grid>
</Grid>
</Window>
using System;
using System.Windows;
using System.Windows.Controls;
namespace CSharp
{
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
void MainWindow_Loaded(object sender, EventArgs e)
{
// Check for safe mode
if ((bool)Application.Current.Properties["SafeMode"])
{
this.Title += " [SafeMode]";
}
}
}
}
Imports System.Windows
Imports System.Windows.Controls
Namespace VisualBasic
Partial Public Class MainWindow
Inherits Window
Public Sub New()
InitializeComponent()
End Sub
Private Sub MainWindow_Loaded(ByVal sender As Object, ByVal e As EventArgs)
' Check for safe mode
If CBool(Application.Current.Properties("SafeMode")) = True Then
Me.Title &= " [SafeMode]"
End If
End Sub
End Class
End Namespace
注解
Application 公开可用于存储应用程序范围属性的字典 Properties 。 这使你能够以线程安全的方式在所有代码 AppDomain 之间共享状态,而无需编写自己的状态代码。
存储在 中的 Properties 属性必须转换为返回的相应类型。
属性 Properties 是线程安全的,可从任何线程获取。