/// <summary>

/// 为了通用，放到一个类文件中，别的也没直接调用
/// </summary>
/// <param name="fileName">得到上传的文件名字以及后缀名字</param>
/// <param name="inFilePath">要打开文件的路径</param>
/// <param name="ShowPath">生产静态页面的路径，以及一些别的文件</param>
/// <param name="outDirPath">可以为空</param>
/// <returns></returns>

public static Tuple<string, string> Priview(string fileName, string inFilePath, string outDirPath = "")
{
object missingType = Type.Missing;
object readOnly = true;
object isVisible = false;
object documentFormat = 8;
//string randomName = DateTime.Now.ToString("yyyyMMddHHmmss");
string randomName = fileName.Remove(fileName.LastIndexOf("."));
object htmlFilePath = outDirPath + randomName + ".html";
string directoryPath = outDirPath + randomName + "_files";

object filePath = inFilePath;
//Open the word document in background

ApplicationClass applicationclass = new ApplicationClass();
applicationclass.Documents.Open(ref filePath,
ref readOnly,
ref missingType, ref missingType, ref missingType,
ref missingType, ref missingType, ref missingType,
ref missingType, ref missingType, ref isVisible,
ref missingType, ref missingType, ref missingType,
ref missingType, ref missingType);
applicationclass.Visible = false;
Document document = applicationclass.ActiveDocument;

//Save the word document as HTML file
document.SaveAs(ref htmlFilePath, ref documentFormat, ref missingType,
ref missingType, ref missingType, ref missingType,
ref missingType, ref missingType, ref missingType,
ref missingType, ref missingType, ref missingType,
ref missingType, ref missingType, ref missingType,
ref missingType);

//Close the word document
document.Close(ref missingType, ref missingType, ref missingType);
KillPreviewWordProcess();
return new Tuple<string, string>(randomName, htmlFilePath.ToString());
}
/// <summary>
/// 关闭所有用于预览的Word后台进程
/// </summary>
public static void KillPreviewWordProcess()
{
//Process.GetProcessesByName("WINWORD").ToList().Where(pro => string.IsNullOrWhiteSpace(pro.MainWindowTitle)).ToList().ForEach(nullPro => nullPro.Kill());
Process[] wordProcess = Process.GetProcessesByName("WINWORD");
try
{
foreach (Process pro in wordProcess)
{
string mwt = pro.MainWindowTitle;
if (string.IsNullOrWhiteSpace(mwt))
{
pro.Kill();
}
}
}
catch
{
}
}

页面中使用

Tuple<string, string> tupleW = WordPreview.Priview(this,get_Name, filePath, outputDirPath);
DName = tupleW.Item1.ToString();
JspUtility.OpenWindow("./Html/" + fileNameWithNoExt.ToString() + ".html", "", "1366", "768", UpdatePanel1);//路径生产静态页面的路径，注意