//创建一个静态类，静态变量，供锁使用
public class PageHelper : System.Web.UI.Page
{
public static Object LockObject = 0;
}
//调用转换代码
protected void btnConvertFile_Click(object sender, EventArgs e)
{
　　if (Monitor.TryEnter(LockObject))
{
//转换操作
　　　　if(ConvertFile("Test.doc"))
ShowMessage("转换成功！");
　　　　else
ShowMessage("转换失败！");
Monitor.Exit(PageHelper.LockObject);
}
　　else
{
//告知请稍等
ShowMessage("有操作正在进行，请稍后再试！")
}
}   

        protected Boolean ConvertFile(string fileName)
{
//FlashPaper文件安装路径 可自行设置
string flashPrinter = Server.MapPath("~/FlashPaper/FlashPrinter.exe");
string inFile = GetFilePath(fileName);
string outFile = GetFlashPath(GetFlashName(fileName));
//进程操作
Process pss = new Process();
pss.StartInfo.CreateNoWindow = false;
pss.StartInfo.FileName = flashPrinter;
pss.StartInfo.Arguments = string.Format("{0} {1} -o {2}", flashPrinter, inFile, outFile);
try
{
pss.Start();
//设置300*200毫秒不结束则退出循环
for (int i = 0; i < 300 && !File.Exists(outFile); i += 1)
System.Threading.Thread.Sleep(200);
//返回输出文件是否存在
return File.Exists(outFile);
}
catch (Exception)
{
//如果报错 将输出文件删除
if (File.Exists(outFile)) File.Delete(outFile);
return false;
}
}

        protected Boolean ConvertFile(string fileName)
{
//FlashPaper文件安装路径 可自行设置
string flashPrinter = Server.MapPath("~/FlashPaper/FlashPrinter.exe");
string inFile = GetFilePath(fileName);
string outFile = GetFlashPath(GetFlashName(fileName));
//进程操作
Process pss = new Process();
pss.StartInfo.CreateNoWindow = false;
pss.StartInfo.FileName = flashPrinter;
pss.StartInfo.Arguments = string.Format("{0} {1} -o {2}", flashPrinter, inFile, outFile);
try
{
pss.Start();
//设置300*200毫秒不结束则退出循环
for (int i = 0; i < 300 && !File.Exists(outFile); i += 1)
System.Threading.Thread.Sleep(200);
//返回输出文件是否存在
return File.Exists(outFile);
}
catch (Exception)
{
//如果报错 将输出文件删除
if (File.Exists(outFile)) File.Delete(outFile);
return false;
}
finally
{
//如果进程还未结束，杀死进程树
if (!pss.HasExited) KillProcess(pss.Id);
}
}
//杀死进程树
private static bool KillProcess(int pid)
{
Process[] procs = Process.GetProcesses();
for (int i = 0; i < procs.Length; i++)
{
if (GetParentProcess(procs[i].Id) == pid)
KillProcess(procs[i].Id);
}
try
{
Process myProc = Process.GetProcessById(pid);
myProc.Kill();
}
catch (ArgumentException)
{
;
}
return true;
}
//获取父进程
private static int GetParentProcess(int Id)
{
int parentPid = 0;
using (ManagementObject mo = new ManagementObject("win32_process.handle='" + Id.ToString(CultureInfo.InvariantCulture) + "'"))
{
try
{
mo.Get();
}
catch (ManagementException)
{
return -1;
}
parentPid = Convert.ToInt32(mo["ParentProcessId"], CultureInfo.InvariantCulture);
}
return parentPid;
}