前文：
做个备份，拿的是试用版的 Aspose，功能见标题
代码：
/// <summary>
/// Aspose office （Excel,Word,PPT）,PDF 在线预览
/// </summary>
/// <param name="sourceDoc">需要预览的文件地址</param>
/// <param name="saveDoc">展示的html文件地址</param>
public void Goto(string sourceDoc, string saveDoc)
{
string s_sourceDoc = Server.MapPath(sourceDoc); string s_saveDoc = Server.MapPath(saveDoc); string docExtendName = Path.GetExtension(s_sourceDoc).ToLower(); switch (docExtendName)
{
case ".doc":
case ".docx":
Aspose.Words.Document doc = new Aspose.Words.Document(s_sourceDoc);
doc.Save(s_saveDoc, Aspose.Words.SaveFormat.Html);
Response.Redirect(saveDoc);
break;
case ".xls":
case ".xlsx":
Aspose.Cells.Workbook workbook = new Aspose.Cells.Workbook(s_sourceDoc);
workbook.Save(s_saveDoc, Aspose.Cells.SaveFormat.Html);
Response.Redirect(saveDoc);
break;
case ".ppt":
case ".pptx":
Aspose.Slides.Pptx.PresentationEx pres = new Aspose.Slides.Pptx.PresentationEx(s_sourceDoc);
pres.Save(s_saveDoc, Aspose.Slides.Export.SaveFormat.Html);
Response.Redirect(saveDoc);
break;
case ".pdf":
Aspose.Pdf.Document pdf = new Aspose.Pdf.Document(s_sourceDoc);
pdf.Save(s_saveDoc, Aspose.Pdf.SaveFormat.Html);
Response.Redirect(saveDoc);
break;
}
}