silverlight 生成二维码

MainPage.xaml

 1  <Grid x:Name="LayoutRoot" Background="White">

 2         <Border BorderThickness="2" BorderBrush="Black" />

 3         <Grid ShowGridLines="True">

 4             <Grid.RowDefinitions>

 5                 <RowDefinition/>

 6                 <RowDefinition Height="50"/>

 7                 <RowDefinition Height="50"/>

 8                 <RowDefinition Height="50"/>

 9             </Grid.RowDefinitions>

10             <Grid.ColumnDefinitions>

11                 <ColumnDefinition Width="100"/>

12                 <ColumnDefinition/>

13             </Grid.ColumnDefinitions>

14             <TextBlock Text="二维码" Grid.Column="0" Grid.Row="0" TextAlignment="Center" Margin="10,50" />

15             <Image x:Name="imgCode" Grid.Column="1" Grid.Row="0" Margin="2"/>

16             <TextBlock Text="图片大小" Grid.Column="0" Grid.Row="1" Margin="10" TextAlignment="Center" />

17             <ComboBox x:Name="cmbSize" Grid.Column="1" Grid.Row="1" Width="100" Height="30" HorizontalAlignment="Right" Margin="0,10,100,10">

18                 <ComboBoxItem Content="100" IsSelected="True" />

19                 <ComboBoxItem Content="150" />

20             </ComboBox>

21             <TextBlock Text="二维码内容" Grid.Column="0" Grid.Row="2" TextAlignment="Center" Margin="10"/>

22             <TextBox x:Name="txtContent" Height="30" Margin="5" Grid.Column="1" Grid.Row="2" />

23             <Button x:Name="btnAdd" Content="生成" Width="100"  Grid.Row="3" Grid.Column="1" Click="btnAdd_Click" Margin="5"/>

24         </Grid>

25     </Grid>

View Code

MainPage.xaml.cs

 1  public partial class MainPage : UserControl

 2     {

 3         StringBuilder sb = null;

 4         Uri uri = null;

 5         public MainPage()

 6         {

 7             InitializeComponent();

 8             sb = new StringBuilder();

 9         }

10         private void btnAdd_Click(object sender, RoutedEventArgs e)

11         {

12             sb.Append("http://chart.apis.google.com/chart?cht=qr&chs=");

13             sb.Append(((ComboBoxItem)cmbSize.SelectedItem).Content.ToString());

14             sb.Append("x");

15             sb.Append(((ComboBoxItem)cmbSize.SelectedItem).Content.ToString());

16             sb.Append("&chl=");

17             sb.Append(txtContent.Text);

18             uri = new Uri(sb.ToString());

19             imgCode.Source = new BitmapImage(uri);

20             sb.Clear();

21         }

22     }

View Code