C＃Windows Phone：是否可以用图像填充LongListSelector？

Question

I fill a LongListSelector with names of products and i would like to put images of products too in my LongListSelector. I get my datas from my webserver using webclient method. To get an image i only know i should use something like this:

pic.Source = new System.Windows.Media.Imaging.BitmapImage(new Uri("http://srvname.com/images/greenpasta.jpg"));

But i don't know how to show images on long list selector.

Answer 1

You should keep the URL of the image as an attribute to your product, not the image source itself. So you can have something like

    myProduct.uri = new Uri("http://srvname.com/images/greenpasta.jpg")

And in xaml:

    <DataTemplate>
    <Grid>
      <Grid.ColumnDefinition>
      <ColumnDefinition Witdh="100" \>
      <ColumnDefinition Witdh="Auto" \>
      <ColumnDefinition Witdh="*" \>
      </Grid.ColumnDefinition>
      <Image Source="{Binding uri}" Height="100" Stretch="Fill"/> >           
      <TextBlock Text="{Binding Name}" /> >
    </Grid>
    </DataTemplate>

Just as a suggestion, by replacing the stackpanel to a grid, you can already reserve space for your image (100 pixels), which is downloaded async. Otherwise, when the image will apear on the screen, it will move all the other content.