Win8 Metro calls the camera to take a photo and save the photo in the appropriate location

Just done this kind of development, so first caught dead, of course, the source code posted on is verified, has been implemented successfully, I hope to give you some reference:

Here's the Metro UI code:

<page    x:class= "camera.mainpage"    xmlns= "Http://schemas.microsoft.com/winfx/2006/xaml/presentation"    xmlns:x= "Http://schemas.microsoft.com/winfx/2006/xaml"    xmlns:local= "Using:camera"    xmlns:d= "http:/ /schemas.microsoft.com/expression/blend/2008 "    xmlns:mc=" http://schemas.openxmlformats.org/ markup-compatibility/2006 "    mc:ignorable=" D ">    <grid background=" {ThemeResource Applicationpagebackgroundthemebrush} ">        <button x:name=" Btncamera "content=" Turn on the camera "horizontalalignment=" Left "margin=" 48,259,0,0 "verticalalignment=" Top "click=" Btncamera_click "height=" "/> <image        x:Name=" Img1 "horizontalalignment=" left "height=" 609 "margin=" 240,78,0,0 "verticalalignment=" Top "width=" 718 "stretch=" Fill " />        <button x:name= "Btnsave" content= "Save Picture" horizontalalignment= "left" margin= "48,369,0,0" Verticalalignment= "Top" height= "click=" Btnsave_click "/>    </Grid></Page>

The displayed interface is actually very easy, but this is not important, the function is basic, the following paste the basic development code:

Using system;using system.collections.generic;using system.io;using system.linq;using System.runtime.interopservices.windowsruntime;using windows.foundation;using Windows.Foundation.Collections; Using windows.ui.xaml;using windows.ui.xaml.controls;using windows.ui.xaml.controls.primitives;using Windows.ui.xaml.data;using windows.ui.xaml.input;using windows.ui.xaml.media;using Windows.UI.Xaml.Navigation; Using windows.media.capture;using windows.storage;using windows.storage.pickers;using Windows.ui.xaml.media.imaging;using windows.storage.streams;//the Blank Page item template is documented at/HTTP go.microsoft.com/fwlink/? linkid=234238/* * * Li Tianpeng * Function: Call the camera on the PC to implement the camera function, and save in the corresponding directory * */namespace camera{//<summary>//an empt    Y page that can is used on it own or navigated to within a Frame.        </summary> public sealed partial class Mainpage:page {private StorageFile file = null; Public MainPage () {this. InitializeComPonent ();  Private async void Btncamera_click (object sender, RoutedEventArgs e) {Cameracaptureui dialog =            New Cameracaptureui (); Dialog.            Photosettings.croppedaspectratio = new Size (16, 9); File = Await dialog.            Capturefileasync (Cameracaptureuimode.photo);                if (file = null) {BitmapImage BitmapImage = new BitmapImage (); using (Irandomaccessstream FileStream = await file.                OpenAsync (Fileaccessmode.read)) {Bitmapimage.setsource (fileStream); } img1.            Source = BitmapImage; }} private Async void Btnsave_click (object sender, RoutedEventArgs e) {if (img1.            Source = = null) return;                else {Filesavepicker picker = new Filesavepicker ();                Picker.commitbuttontext = "Save"; Picker.          Suggestedfilename = "Hello";      Picker.                Filetypechoices.add ("Picture", New string[]{". jpg", ". jpeg", ". bmp", ". png"}); Picker.                Suggestedstartlocation = pickerlocationid.pictureslibrary; StorageFile FilePath = await picker.                Picksavefileasync (); if (FilePath! = null) {//Opens a photo taken by the camera and returns the stream as a stream to read the file var Streamrando m = await file.                    OpenAsync (Fileaccessmode.read);                    Reads the shot in stream form to buffer IBuffer = Randomaccessstreamtobuffer (streamrandom);                Writes buffer contents to the corresponding directory await Fileio.writebufferasync (filePath, buffer); }}}//write the picture to the buffer private IBuffer randomaccessstreamtobuffer (Irandomaccessstream randomstr EAM) {Stream stream = Windowsruntimestreamextensions.asstreamforread (randomstream.            Getinputstreamat (0));            MemoryStream MemoryStream = new MemoryStream ();          if (stream! = null)  {byte[] bytes = Convertstreamtobyte (stream); Converts the flow to a byte array if (bytes! = null) {var binaryWriter = new BinaryWriter (mem                    Orystream);                BinaryWriter.Write (bytes); }} IBuffer buffer = Windowsruntimebufferextensions.getwindowsruntimebuffer (MemoryStream, 0, (int) Me            Morystream.length);        return buffer; }//Change the flow to binary public static byte[] Convertstreamtobyte (Stream input) {byte[] buffer = new            BYTE[16 * 1024];                using (MemoryStream ms = new MemoryStream ()) {int read; while (read = input. Read (buffer, 0, buffer. Length)) > 0) {Ms.                Write (buffer, 0, read); } return Ms.            ToArray (); }        }    }}

However, this is not enough, assuming the need to call the camera, but also need some permissions, should be in the Package.appxmanifest to change the permissions,

The changes are as follows: Just hook up the webcam.

Source code Download:

http://download.csdn.net/detail/litianpeng1991/7548065

Win8 Metro calls the camera to take a photo and save the photo in the appropriate location