Run Camera App of Windows 10 from Desktop Application

Question

I need to just run default camera app of windows 10 in c#. I tried different methods like:

process.start("camera.exe"):
ms-camera://
microsoft.windows.camera

But all failed.

It is not a store app so I cannot use " launch URI " method.

Answer 1

使用它来启动“相机”应用程序：

Process.Start("microsoft.windows.camera:");

Answer 2

The Camera app is a Universal Windows app, so you cannot simply execute an *.exe. Use the registered protocol as shown by Nasreddine or this approach via IApplicationActivationManager .

Use the source code from this answer

public enum ActivateOptions
{
    None = 0x00000000,  // No flags set
    DesignMode = 0x00000001,  // The application is being activated for design mode, and thus will not be able to
                                // to create an immersive window. Window creation must be done by design tools which
                                // load the necessary components by communicating with a designer-specified service on
                                // the site chain established on the activation manager.  The splash screen normally
                                // shown when an application is activated will also not appear.  Most activations
                                // will not use this flag.
    NoErrorUI = 0x00000002,  // Do not show an error dialog if the app fails to activate.                                
    NoSplashScreen = 0x00000004,  // Do not show the splash screen when activating the app.
}

[ComImport, Guid("2e941141-7f97-4756-ba1d-9decde894a3d"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
interface IApplicationActivationManager
{
    // Activates the specified immersive application for the "Launch" contract, passing the provided arguments
    // string into the application.  Callers can obtain the process Id of the application instance fulfilling this contract.
    IntPtr ActivateApplication([In] String appUserModelId, [In] String arguments, [In] ActivateOptions options, [Out] out UInt32 processId);
    IntPtr ActivateForFile([In] String appUserModelId, [In] IntPtr /*IShellItemArray* */ itemArray, [In] String verb, [Out] out UInt32 processId);
    IntPtr ActivateForProtocol([In] String appUserModelId, [In] IntPtr /* IShellItemArray* */itemArray, [Out] out UInt32 processId);
}

[ComImport, Guid("45BA127D-10A8-46EA-8AB7-56EA9078943C")]//Application Activation Manager
class ApplicationActivationManager : IApplicationActivationManager
{
    [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)/*, PreserveSig*/]
    public extern IntPtr ActivateApplication([In] String appUserModelId, [In] String arguments, [In] ActivateOptions options, [Out] out UInt32 processId);
    [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
    public extern IntPtr ActivateForFile([In] String appUserModelId, [In] IntPtr /*IShellItemArray* */ itemArray, [In] String verb, [Out] out UInt32 processId);
    [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
    public extern IntPtr ActivateForProtocol([In] String appUserModelId, [In] IntPtr /* IShellItemArray* */itemArray, [Out] out UInt32 processId);
}

and then start the camera app via its AppUserModelID Microsoft.WindowsCamera_8wekyb3d8bbwe!App :

private void button3_Click(object sender, EventArgs e)
{
    ApplicationActivationManager appActiveManager = new ApplicationActivationManager();
    uint pid;
    appActiveManager.ActivateApplication("Microsoft.WindowsCamera_8wekyb3d8bbwe!App", null, ActivateOptions.None, out pid);
}