WPF How to Center Image.Source

Question

I am developing a custom image control in WPF.NET 3.5 and Visual Studio 2010.

In WinForms, the PicutreBox control has a SizeMode property that includes a " CenterImage ".

I want my image control to have this ability.

Anyway?

thank

My XAML code:

<Window x:Class="WpfApplication1.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="768" Width="1024" xmlns:my="http://schemas.sharpsoft.net/xaml" xmlns:my1="clr-namespace:WpfApplication1">
    <Grid>
        <my1:CustomControl1
                    x:Name="customControl11"
                    Width="206"
                    Height="197"
                    HorizontalAlignment="Left"
                    VerticalAlignment="Top"
                    Margin="18,58,0,0"
                    Stretch="Uniform"/>
    </Grid>
</Window>

My custom code is:

public class CustomControl1 : Image
{
    public CustomControl1()
    {
        // Bitmap to Stream
        Stream ms = new MemoryStream();
        Properties.Resources.webcam_background.Save(ms, ImageFormat.Png);

        // Stream to BitmapImage
        BitmapImage bitmap = new BitmapImage();
        bitmap.BeginInit();
        bitmap.StreamSource = ms;
        bitmap.EndInit();

        // Set it
        Source = bitmap;
    }
}

Where "webcam_backgroud" is the PNG image added by the default visual studio resource editor.

Answer 1

Stretch None.

<Image Source="..." Stretch="None" />

Answer 2

Image :

    <Grid>
        <Image Stretch="None"
               HorizontalAlignment="Center"
               VerticalAlignment="Center" />
    </Grid>

Answer 3

:

<Image Name="PreviewImage" HorizontalAlignment="Stretch" Stretch="Uniform" VerticalAlignment="Top" Width="456"  Height="256"/>

Answer 4

x: .

<Window x:Name="mainWindowContainer"
    x:Class="WpfApplication1.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="MainWindow" Height="768" Width="1024" xmlns:my="http://schemas.sharpsoft.net
    [...]
</Window>

. , , . , "frameWidth", (destWidth, destHeight), :

        int wOffset = (((int)mainWindowContainer.ActualWidth - frameWidth * 2) - destWidth) / 2 + frameWidth;
        int hOffset = (((int)mainWindowContainer.ActualHeight - frameWidth * 2) - destHeight) / 2 + frameWidth;

        Canvas.SetLeft(image, wOffset);
        Canvas.SetTop(image, hOffset);