Application.Run Method (Window) (System.Windows)

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.NET Framework Class Library
Application.Run Method (Window)

Starts a Windows Presentation Foundation (WPF) application and opens the specified window.

Namespace:  System.Windows
Assembly:  PresentationFramework (in PresentationFramework.dll)
Syntax
Visual Basic
Public Function Run ( _
	window As Window _
) As Integer
C#
public int Run(
	Window window
)
Visual C++
public:
int Run(
	Window^ window
)
F#
member Run : 
        window:Window -> int

Parameters

window
Type: System.Windows.Window
A Window that opens automatically when an application starts.

Return Value

Type: System.Int32
The Int32 application exit code that is returned to the operating system when the application shuts down. By default, the exit code value is 0.
Exceptions
Exception Condition
InvalidOperationException

Run is called from a browser-hosted application (for example, an XAML browser application (XBAP)).
Remarks

This overload extends the Run method to open the specified window after an application starts running.

If you define a code Application that opens a window when it starts running, you explicitly call Run.

If you create your Application using markup, or markup and code-behind, you can automatically open a window during using either of the following techniques:

Examples

The following example shows an application with a manually-created static entry point method that instantiates Application, before calling Run.

Visual Basic


Imports Microsoft.VisualBasic
Imports System
Imports System.Windows

Namespace VisualBasic
    Public Class EntryPoint
        ' All WPF applications should execute on a single-threaded apartment (STA) thread
        <STAThread()>
              Public Shared Sub Main()
            Dim app As New Application()
            app.Run(New Window())
        End Sub
    End Class
End Namespace
C#

using System;
using System.Windows;

namespace CSharp
{
    public class EntryPoint
    {
        // All WPF applications should execute on a single-threaded apartment (STA) thread
        [STAThread]
        public static void Main()
        {
            Application app = new Application();
            app.Run(new Window());
        }
    }
}
Version Information

.NET Framework

Supported in: 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
Platforms

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
See Also

Reference

Application Class
Run Overload
System.Windows Namespace
Shutdown
Shutdown