How to load image to WPF in runtime?

In WPF an image is typically loaded from a Stream or an Uri.

BitmapImage supports both and an Uri can even be passed as constructor argument:

var uri = new Uri("http://..."); var bitmap = new BitmapImage(uri); 

If the image file is located in a local folder, you would have to use a file:// Uri. You could create such a Uri from a path like this:

var path = Path.Combine(Environment.CurrentDirectory, "Bilder", "sas.png"); var uri = new Uri(path); 

If the image file is an assembly resource, the Uri must follow the the Pack Uri scheme:

var uri = new Uri("pack://application:,,,/Bilder/sas.png"); 

In this case the Visual Studio Build Action for sas.png would have to be Resource.

Once you have created a BitmapImage and also have an Image control like in this XAML

<Image Name="image1" /> 

you would simply assign the BitmapImage to the Source property of that Image control:

image1.Source = bitmap; 

Make sure that your sas.png is marked as Build Action: Content and Copy To Output Directory: Copy Always in its Visual Studio Properties...

I think the C# source code goes like this...

Image image = new Image(); image.Source = (new ImageSourceConverter()).ConvertFromString("pack://application:,,,/Bilder/sas.png") as ImageSource; 

and XAML should be

<Image Height="200" HorizontalAlignment="Left" Margin="12,12,0,0" Name="image1" Stretch="Fill" VerticalAlignment="Top" Source="../Bilder/sas.png" Width="350" /> 

EDIT

Dynamically I think XAML would provide best way to load Images ...

<Image Source="{Binding Converter={StaticResource MyImageSourceConverter}}" x:Name="MyImage"/> 

where image.DataContext is string path.

MyImage.DataContext = "pack://application:,,,/Bilder/sas.png"; public class MyImageSourceConverter : IValueConverter { public object Convert(object value_, Type targetType_, object parameter_, System.Globalization.CultureInfo culture_) { return (new ImageSourceConverter()).ConvertFromString (value.ToString()); } public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) { throw new NotImplementedException(); } } 

Now as you set a different data context, Image would be automatically loaded at runtime.