Change the orientation based on Image width and height

问题

I have few images thats being displayed, now there are some images where the width of the image is greater than the height of the image.

Say: image.GetWidth() > image.GetHeight();

display the image in landscape mode, else display the image in portrait mode.

I have searched,and could not find any resource that will help me in this case.

Any help would be appreciated.

Please not that i am on WP8.

EDIT

Grid grid = new Grid();
grid.VerticalAlignment = VerticalAlignment.Center;
grid.HorizontalAlignment = HorizontalAlignment.Center;
grid.Height = height; //set height
grid.Width = width; //set width
grid.Background = new SolidColorBrush(Colors.White);
Image img = new Image();
img.VerticalAlignment = VerticalAlignment.Center;
img.HorizontalAlignment = HorizontalAlignment.Center;
img.Source = source;

回答1:

Try this,First add composite transform to image

        <Image Name="image" HorizontalAlignment="Center" VerticalAlignment="Center" Stretch="Uniform" RenderTransformOrigin="0.5,0.5">
            <Image.RenderTransform>
                <CompositeTransform x:Name="compositeTransform"/>
            </Image.RenderTransform>
        </Image>

then check Height width(hope you have height width) of image and set composite transform rotation as per height width. Use -90 degree or +90 degree as per your requirement.

        image.Height = 300;
        image.Width = 400;
        if (image.Height > image.Width)
        {
            compositeTransform.Rotation = 0.0;
        }
        else
        {
            compositeTransform.Rotation = 90.00;
        }
        image.Source =(ImageSource) new ImageSourceConverter().ConvertFromString("2011-Chrysler-300-Model-09-1024x1280.jpg");

For Code Behind first add composite transform then set it to image

    CompositeTransform transform = new CompositeTransform();
    transform.CenterX = 0.5;
    transform.CenterY = 0.5;
    image.RenderTransform = transform;

Then check Height width(hope you have height width) of image and set composite transform rotation as per height width. Use -90 degree or +90 degree as per your requirement.

        image.Height = 300;
        image.Width = 400;
        if (image.Height > image.Width)
        {
            transform.Rotation = 0.0;
        }
        else
        {
            transform.Rotation = 90.00;
        }
        image.Source =(ImageSource) new ImageSourceConverter().ConvertFromString("2011-Chrysler-300-Model-09-1024x1280.jpg");

回答2:

To get the width and height of the Image,

double height = image1.ActualHeight;
double width = image1.ActualWidth;

来源：https://stackoverflow.com/questions/22627245/change-the-orientation-based-on-image-width-and-height

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