Windows 8实用窍门系列：14.windows 8中粘贴板(剪切板)的使用

wss1051

　　在Windows 8中我们的粘贴板分别保存4种信息：文本、图片、网页、文件。在本文中我们将分别复制和粘贴这4种元素，当然你也可以在外部复制这4种元素，然后在程序中粘贴出来。
　　DataPackage：包含用户希望与另一个应用程序交换的数据



          //设置一个中转变量保存用户的值
DataPackage dp = new DataPackage();
　　第一：我们来看看复制和粘贴文本的后台处理代码。



        //
private void CopyText_Click(object sender, RoutedEventArgs e)
{
dp.SetText(this.SourceText.Text);
Clipboard.SetContent(dp);
}
//
private async void PasteText_Click(object sender, RoutedEventArgs e)
{
var ClipBoardData = Clipboard.GetContent();
if (ClipBoardData.Contains(StandardDataFormats.Text))
{
this.TargetText.Text = await ClipBoardData.GetTextAsync();
}
}
　　第二：复制和粘贴图片后台处理代码



        //
private async void CopyImage_Click(object sender, RoutedEventArgs e)
{
Uri uri = new Uri("ms-appx:///Assets/iphone0426_006.jpg");
StorageFile file = await StorageFile.GetFileFromApplicationUriAsync(uri);
dp.SetBitmap(RandomAccessStreamReference.CreateFromFile(file));
Clipboard.SetContent(dp);
}
//
private async void PasteImage_Click(object sender, RoutedEventArgs e)
{
var ClipBoardData = Clipboard.GetContent();
if (ClipBoardData.Contains(StandardDataFormats.Bitmap))
{
RandomAccessStreamReference img = await ClipBoardData.GetBitmapAsync();
var imgstream = await img.OpenReadAsync();
BitmapImage bitmap = new BitmapImage();
bitmap.SetSource(imgstream);
this.TargetImage.Source = bitmap;
}
}
　　第三：复制和粘贴HTML的后台处理代码



        //
private void CopyHtml_Click(object sender, RoutedEventArgs e)
{
string html = HtmlFormatHelper.CreateHtmlFormat(this.SourceHtml.InvokeScript("eval",
new string[] { "document.documentElement.outerHTML;" }));
dp.SetHtmlFormat(html);
Clipboard.SetContent(dp);
}
//
private async void PasteHtml_Click(object sender, RoutedEventArgs e)
{
var ClipBoardData = Clipboard.GetContent();
if (ClipBoardData.Contains(StandardDataFormats.Html))
{
string html = await ClipBoardData.GetHtmlFormatAsync();
this.TargetHtml.NavigateToString(html);
}
}
　　第四：复制和粘贴文件的后台处理代码



        //
private async void CopyFile_Click(object sender, RoutedEventArgs e)
{
Uri uri1 = new Uri("ms-appx:///Assets/iphone0426_006.jpg");
StorageFile file1 = await StorageFile.GetFileFromApplicationUriAsync(uri1);
Uri uri2 = new Uri("ms-appx:///Assets/iphone0426_010.jpg");
StorageFile file2 = await StorageFile.GetFileFromApplicationUriAsync(uri2);
List filelist = new List();
filelist.Add(file1);
filelist.Add(file2);
dp.SetStorageItems(filelist);
Clipboard.SetContent(dp);
}
//
private async void PasteFile_Click(object sender, RoutedEventArgs e)
{
var ClipBoardData = Clipboard.GetContent();
this.TargetFile.Text = "";
if (ClipBoardData.Contains(StandardDataFormats.StorageItems))
{
var filelist = await ClipBoardData.GetStorageItemsAsync();
foreach (StorageFile sfile in filelist)
{
StorageFile storageFileCopy = await sfile.CopyAsync(KnownFolders.DocumentsLibrary,
sfile.Name,NameCollisionOption.ReplaceExisting);
this.TargetFile.Text += sfile.Name + "文件粘贴一份到“库\\文档\\" + sfile.Name+"\r";
}
}
}
　　第五：我们贴出前台代码如下



   




















　　第六：因为要复制文件到“库/文档"文件夹下面，所以需要设置如下两处，具体参考http://www.iyunv.com/chengxingliang/archive/2012/12/17/2819568.html
　　设置文件后缀为jpg的可访问。
　　最后如需源码请点击 Win8ClipBoard2.rar ，效果图如下：