通用的FlashPaper支持Word/Excel/PDF,到時對於Silverlight的XPS的文檔支持問題比較多，本控件提供了一個可視化的XPS文檔展示，提供放大縮小/打印/搜索/分頁等功能，主要整合了開源的Document Toolkit。
1. 使用Document Toolkit，DocumentDataSource提供數據源，PageNvaigator提供分頁 ：
<
doc:DocumentDataSource
x:Name
="dataSource"
/>
< doc:DocumentViewer Grid.Row ="1" x:Name ="viewer" DocumentDataSource =" {Binding ElementName=dataSource} " ViewMode =" {Binding SelectedViewMode, ElementName=viewModePicker} " BorderBrush ="#9fa9a4" BorderThickness ="1" />
< doc:PageNavigator x:Name ="navigator" HorizontalAlignment ="Center"
PageCount =" {Binding PageCount, ElementName=viewer} "
PageIndex =" {Binding PageIndex, ElementName=viewer, Mode=TwoWay} "
/>
< doc:ViewModePicker Grid.Column ="1" x:Name ="viewModePicker" Visibility ="Collapsed" />
< doc:DocumentViewer Grid.Row ="1" x:Name ="viewer" DocumentDataSource =" {Binding ElementName=dataSource} " ViewMode =" {Binding SelectedViewMode, ElementName=viewModePicker} " BorderBrush ="#9fa9a4" BorderThickness ="1" />
< doc:PageNavigator x:Name ="navigator" HorizontalAlignment ="Center"
PageCount =" {Binding PageCount, ElementName=viewer} "
PageIndex =" {Binding PageIndex, ElementName=viewer, Mode=TwoWay} "
/>
< doc:ViewModePicker Grid.Column ="1" x:Name ="viewModePicker" Visibility ="Collapsed" />
2. WebPackageReader讀取本地xps或遠程xps文件作為數據源
DotNetZipPackageReader 根據分頁延遲加載文檔
//
loads the sample XPS document from the web
var url = string.Format( " /DocumentService.ashx?id={0} ", HtmlPage.Document.GetElementById( " documentId ").GetProperty( " value "));
webClient.OpenReadAsync( new Uri(HtmlPage.Document.DocumentUri, url));
var reader = new WebPackageReader( new Uri(HtmlPage.Document.DocumentUri, url + " &part= "));
this.dataSource.PackageReader = reader;
var xpsClient = new XpsClient();
xpsClient.LoadXpsDocumentAsync(reader);
var url = string.Format( " /DocumentService.ashx?id={0} ", HtmlPage.Document.GetElementById( " documentId ").GetProperty( " value "));
webClient.OpenReadAsync( new Uri(HtmlPage.Document.DocumentUri, url));
var reader = new WebPackageReader( new Uri(HtmlPage.Document.DocumentUri, url + " &part= "));
this.dataSource.PackageReader = reader;
var xpsClient = new XpsClient();
xpsClient.LoadXpsDocumentAsync(reader);
3. 服務端根據請求的文件ID和當前頁碼返回指定的文件流
private
void Response(HttpContext context,
string xpsFileName,
string partName)
{
using (FileStream stream = File.OpenRead(xpsFileName))
{
ZipFile file = new ZipFile(stream);
ZipEntry entry = file.GetEntry(partName);
if (entry != null)
{
using (Stream entryStream = file.GetInputStream(entry))
{
// TODO: set mime-type as defined in XPS package
context.Response.ContentType = " application/octet-stream ";
byte[] buffer = new byte[ 2 << 14]; // write blocks of 32768 bytes
int read;
while ((read = entryStream.Read(buffer, 0, buffer.Length)) > 0)
{
context.Response.OutputStream.Write(buffer, 0, read);
}
}
}
else
{
// return 404 Not Found
context.Response.StatusCode = ( int)HttpStatusCode.NotFound;
}
}
}
{
using (FileStream stream = File.OpenRead(xpsFileName))
{
ZipFile file = new ZipFile(stream);
ZipEntry entry = file.GetEntry(partName);
if (entry != null)
{
using (Stream entryStream = file.GetInputStream(entry))
{
// TODO: set mime-type as defined in XPS package
context.Response.ContentType = " application/octet-stream ";
byte[] buffer = new byte[ 2 << 14]; // write blocks of 32768 bytes
int read;
while ((read = entryStream.Read(buffer, 0, buffer.Length)) > 0)
{
context.Response.OutputStream.Write(buffer, 0, read);
}
}
}
else
{
// return 404 Not Found
context.Response.StatusCode = ( int)HttpStatusCode.NotFound;
}
}
}
4. 源代碼下載
https://199.47.216.171/u/10032723/DocumentToolkit.rar
5. 在線預覽
http://rapidsl2.guozili.25u.com/ ( admin/admin 點左邊菜單 控件展示 - 文檔查看器)
6. 截圖
