[转载]文档在线预览：文档生成技术细节

Process cmd = new Process();
cmd.StartInfo.FileName = “cmd.exe“;
cmd.StartInfo.UseShellExecute = false;
cmd.StartInfo.CreateNoWindow = true;
cmd.StartInfo.Arguments = String.Format(@”/c {0}“, strShellCommand);
cmd.Start();
cmd.WaitForExit();

DateTime endTime = DateTime.Now;
TimeSpan timeSpan = endTime – beginTime;
spanMilliseconds = timeSpan.TotalMilliseconds;

return spanMilliseconds;
}

if (timeout <= 0)
timeout = 30;

int i = 0;
while (!RenameFile(sourcePath, targetPath))
{
Thread.Sleep(1000);
i++;
if (i == timeout)
break;
}
if (i < timeout)
isSuccess = true;

return isSuccess;
}

/// <summary>
/// 重命名文件（用来检查文件是否生成完成）
/// </summary>
/// <param name=”sourePath”>源地址</param>
/// <param name=”targetPath”>目标地址</param>
/// <returns></returns>
private static bool RenameFile(string sourePath, string targetPath)
{
bool isOpen = false;

//如果是相同地址，直接移动检查是否文件已经生成，否则进行复制（因为目标文件存在的话会有问题）
if (sourePath.Equals(targetPath))
{
try
{
//移动文件
File.Move(sourePath, targetPath);
isOpen = true;
}
catch (Exception e)
{

}
}
else
{
bool isCopySuccess = false;
try
{
//复制文件
File.Copy(sourePath, targetPath, true);
isCopySuccess = true;
}
catch (Exception e)
{
isCopySuccess = false;
}
if (isCopySuccess)
{
//如果复制成功，删除源文件
File.Delete(sourePath);
}
}

return isOpen;
}