Silverlight 4 Beta communication with the Clipboard

In my previous article "Silverlight4beta's right mouse button support" mentioned that SL4 finally support the right mouse button. Although a context menu control is not provided, it is not difficult to achieve it. The most common operation of context menus is to copy/paste/cut This type of functionality, and today we'll talk about another simple new feature of Silverlight4beta: Communicating with the Clipboard (in previous SL versions, because there is no built-in support for the Clipboard communication, we can only call JS's means to realize the communication between SL and the shearing board)

Yes, SL4 really supports the clipboard, but it's a pathetic little feature.

All the features of the Clipboard are located below the System.Windows.Clipboard class, so let's look at its member definitions:

public　static　bool　ContainsText();　剪切板中是否包含文本　
public　static　string　GetText();　得到剪切板中的文本内容
　 public　static　void　SetText(string　text);　设置剪切板的文本内容

Only these three methods. The members are really few pitiful, the function is indeed simply excessive. As I added above, SL4 only supports text information in the Clipboard, what pictures, other multimedia information, don't even think about it.

Next we do a simple example, the code is very simple, it is not explained in detail.

XAML is as follows

<Grid　x:Name="LayoutRoot"　Background="White">
　　 <StackPanel　Orientation="Horizontal"　Height="40">
　　　　 <TextBox　AcceptsReturn="True"　x:Name="txtText"　Width="150"　/>
　　　　 <Button　Content="复制"　Click="Copy"　/>
　　　　 <Button　Content="粘贴"　Click="Paste"　/>
　　 </StackPanel>
</Grid>

C # code is as follows

public　partial　class　MainPage　:　UserControl　{
　　 public　MainPage()　{
　　　　 InitializeComponent();
　　 }

　　 private　void　Paste(object　sender,　RoutedEventArgs　e)　{
　　　　 if　(Clipboard.ContainsText())
　　　　　　 txtText.Text　=　Clipboard.GetText();
　　 }

　　 private　void　Copy(object　sender,　RoutedEventArgs　e)　{
　　　　 if　(!string.IsNullOrEmpty(txtText.Text.Trim()))
　　　　　　 Clipboard.SetText(txtText.Text);
　　 }
}

The operation effect is as follows:

Another safety issue, when SL first communicates with the Clipboard, requires user approval

　

A detailed explanation of security can be found in my blog post: "Silverlight4beta's operating Camera/microphone" in the relevant content.

Ok,have fun~

Source: http://024hi.cnblogs.com/