asp.net 将ppt，word转化为pdf实现在线浏览详解

//// <summary>
/// 把Word文件转换成pdf文件2
/// </summary>
/// <param name="sourcePath">需要转换的文件路径和文件名称</param>
/// <param name="targetPath">转换完成后的文件的路径和文件名名称</param>
/// <returns>成功返回true,失败返回false</returns>
public bool WordToPdf(object sourcePath, string targetPath)
{
bool result = false;
WdExportFormat wdExportFormatPDF = WdExportFormat.wdExportFormatPDF;
object missing = Type.Missing;
Microsoft.Office.Interop.Word.ApplicationClass applicationClass = null;
Microsoft.Office.Interop.Word.Document document = null;
try
{
applicationClass = new Microsoft.Office.Interop.Word.ApplicationClass();
document = applicationClass.Documents.Open(ref sourcePath, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing);
if (document != null)
{
document.ExportAsFixedFormat(targetPath, wdExportFormatPDF, false, WdExportOptimizeFor.wdExportOptimizeForPrint, WdExportRange.wdExportAllDocument, , , WdExportItem.wdExportDocumentContent, true, true, WdExportCreateBookmarks.wdExportCreateWordBookmarks, true, true, false, ref missing);
}
result = true;
}
catch
{
result = false;
}
finally
{
if (document != null)
{
document.Close(ref missing, ref missing, ref missing);
document = null;
}
if (applicationClass != null)
{
applicationClass.Quit(ref missing, ref missing, ref missing);
applicationClass = null;
}
}
return result;
} //// <summary>
/// 把ppt文件转换成pdf文件2
/// </summary>
/// <param name="sourcePath">需要转换的文件路径和文件名称</param>
/// <param name="targetPath">转换完成后的文件的路径和文件名名称</param>
/// <returns>成功返回true,失败返回false</returns>
public static bool PPTConvertToPDF(string sourcePath, string targetPath)
{
bool result;
PowerPoint.PpSaveAsFileType ppSaveAsFileType = PowerPoint.PpSaveAsFileType.ppSaveAsPDF;//转换成pdf
object missing = Type.Missing;
Microsoft.Office.Interop.PowerPoint.ApplicationClass application = null;
PowerPoint.Presentation persentation = null;
try
{
application = new Microsoft.Office.Interop.PowerPoint.ApplicationClass();
persentation = application.Presentations.Open(sourcePath, MsoTriState.msoTrue, MsoTriState.msoFalse, MsoTriState.msoFalse);
if (persentation != null)
{
persentation.SaveAs(targetPath, ppSaveAsFileType, MsoTriState.msoTrue);
}
result = true;
}
catch
{
result = false;
}
finally
{
if (persentation != null)
{
persentation.Close();
persentation = null;
}
if (application != null)
{
application.Quit();
application = null;
}
}
return result;
}

/// <summary>
/// 打开pdf文件方法
/// </summary>
/// <param name="p"></param>
/// <param name="inFilePath">文件路径及文件名</param>
public static void Priview(System.Web.UI.Page p, string inFilePath)
{
p.Response.ContentType = "Application/pdf"; string fileName = inFilePath.Substring(inFilePath.LastIndexOf('\\') + );
p.Response.AddHeader("content-disposition", "filename=" + fileName);
p.Response.WriteFile(inFilePath);
p.Response.End();
}

protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
SerialID = GetQueryString("SerialID", "");//获取文件主键
ShowContent();//预览的方法
}
}
public void ShowContent()
{
string AttachMent2pdf = Server.MapPath(@"\DownLoadAttachment\" + string.Format("{0}.pdf", SerialID));//判断此文件是否以前打开过
if (File.Exists(AttachMent2pdf)==true)
{
Priview(this, Server.MapPath(@"\DownLoadAttachment\" + string.Format("{0}.pdf", SerialID)));//此文件打开过找到以前的文件直接打开
return;
}
else//如果第一次打开
{
if (Directory.Exists(Server.MapPath("DownLoadAttachment")) == false)//判断存放转换后的文件夹是否存在
{
Directory.CreateDirectory(Server.MapPath(@"\DownLoadAttachment\"));//不存在文件夹就创建文件夹
}
CopyFile();//复制文件下面有方法（我只想做一次转换后以后打开不转换，所以每次转化的时候都要复制一个fdf文件来准备被替换）
string _Ext = System.IO.Path.GetExtension(GetPptOrWordStarPath(SerialID));//获取扩展名
if (_Ext == ".doc" || _Ext == ".docx")//判断是ppt还是word
{ WordToPdf(GetPptOrWordStarPath(SerialID), Server.MapPath(@"\DownLoadAttachment\" + string.Format("{0}.pdf",SerialID)));//word转化pdf的方法，上面有特别提醒注意路径
}
if (_Ext == ".ppt")
{
PPTConvertToPDF(GetPptOrWordStarPath(SerialID), Server.MapPath(@"\DownLoadAttachment\" + string.Format("{0}.pdf", SerialID)));
}
}
Priview(this, Server.MapPath(@"\DownLoadAttachment\" + string.Format("{0}.pdf", SerialID)));
}
public void CopyFile()
{
string sourceFile = Server.MapPath(@"\SourceFile\123456.pdf");
string objectFile = Server.MapPath(@"\DownLoadAttachment\" + string.Format("{0}.pdf", SerialID));
if (System.IO.File.Exists(sourceFile))
{
System.IO.File.Copy(sourceFile, objectFile, true);
}
}