图片显示的几种方法

public partial class ImageShow : PhoneApplicationPage 
    { 
        public ImageShow() 
        { 
            InitializeComponent(); 
        } 
 
 
        /// <summary> 
        /// 通过BitmapImage（URI）方式 
        /// </summary> 
        /// <param name="sender"></param> 
        /// <param name="e"></param> 
        private void Button_Click(object sender, RoutedEventArgs e) 
        { 
            string uri = "/PhoneApp1;component/Images/1.jpg"; 
            BitmapImage bt = new BitmapImage(new Uri(uri,UriKind.RelativeOrAbsolute)); 
            p_w_picpath2.Source = bt;   
        } 
 
        /// <summary> 
        /// 通过流Stream方式 
        /// </summary> 
        /// <param name="sender"></param> 
        /// <param name="e"></param> 
        private void Button_Click_1(object sender, RoutedEventArgs e) 
        { 
            string uri = "/PhoneApp1;component/Images/2.jpg"; 
            Stream imgStream = Application.GetResourceStream(new Uri(uri,UriKind.RelativeOrAbsolute)).Stream; 
            BitmapImage bt = new BitmapImage(); 
            bt.SetSource(imgStream); 
            p_w_picpath2.Source = bt; 
        } 
 
        private void Button_Click_2(object sender, RoutedEventArgs e) 
        { 
            WriteableBitmap wbt = new WriteableBitmap(300,300); 
            for (int i = 0; i < wbt.Pixels.Length; i++) 
            { 
                wbt.Pixels[i] = int.MaxValue; 
            } 
            p_w_picpath2.Source = wbt; 
        } 
 
        private void Button_Click_3(object sender, RoutedEventArgs e) 
        { 
            WriteableBitmap wbt = new WriteableBitmap(this.LayoutRoot, null); 
            p_w_picpath2.Source=wbt; 
        } 
    } 

Xaml

<Grid x:Name="LayoutRoot" Background="Transparent"> 
        <Grid.RowDefinitions> 
            <RowDefinition Height="Auto"/> 
            <RowDefinition Height="Auto"/> 
            <RowDefinition Height="Auto"/> 
            <RowDefinition Height="Auto"/> 
            <RowDefinition Height="Auto"/> 
            <RowDefinition Height="Auto"/> 
        </Grid.RowDefinitions> 
        <Image Name="p_w_picpath2"  Height="400"></Image> 
        <Button Grid.Row="1" Click="Button_Click" Content="LoadImageByUri" Width="300"></Button> 
        <Button Grid.Row="2"  Click="Button_Click_1" Content="LoadImageByStream" Width="300"></Button> 
         
        <Button Content="LoadFromWriteBitmapByPiexel" Click="Button_Click_2" Grid.Row="4"></Button> 
        <Button Content="LoadFromWriteBitmapByElement" Click="Button_Click_3" Grid.Row="5"></Button> 
    </Grid> 

效果图：