通用的FlashPaper支持Word/Excel/PDF,到时对于Silverlight的XPS的文档支持问题比较多，本控件提供了一个可视化的XPS文档展示，提供放大缩小/打印/搜索/分页等功能，主要整合了开源的Document Toolkit。
1. 使用Document Toolkit，DocumentDataSource提供数据源，PageNvaigator提供分页 ：
<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读取本地xps或远程xps文件作为数据源
DotNetZipPackageReader 根据分页延迟加载文档
// 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. 服务端根据请求的文件ID和当前页码返回指定的文件流
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. 源代码下载
https://199.47.216.171/u/10032723/DocumentToolkit.rar
5. 在线预览
http://rapidsl2.guozili.25u.com/ (admin/admin 点左边菜单 控件展示 - 文档查看器)
6. 截图
