Question

例如，假设我在c：\ test安装了我的应用程序然后从c：\ test我运行我的应用程序test.exe 所以我想在我的程序中输入一个字符串c：\ test 如果我从d：\ hello运行test.exe 所以程序中的目录是d：\ hello

安装是由InnoSetup完成的，但这只是为了设置我想安装的目录并从我的应用程序运行。

在我的申请中，我做了：

testDir = Path.GetDirectoryName(Application.ExecutablePath);

我之前也尝试过：

testDir = Path.GetDirectoryName(Application.StartupPath);

在这两种情况下，我得到相同的异常无法找到文件......

在我从安装后运行我的应用程序的地方有两个exe文件，一个是应用程序，第二个是应用程序需要使用的exe文件。

所以我想从运行我的应用程序exe文件的目录中获取目录，这样我也可以使用其他exe文件。

修改

代码：

class Ffmpeg
    {
        NamedPipeServerStream p;
        String pipename = "mytestpipe";
        byte[] b;
        System.Diagnostics.Process process;
        string ffmpegFileName;
        string workingDirectory;

        public Ffmpeg()
        {
            workingDirectory = Path.GetDirectoryName(Application.ExecutablePath);// +@"\workingDirectory";
            ffmpegFileName = @"\ffmpeg.exe";
            if (!Directory.Exists(workingDirectory))
            {
                Directory.CreateDirectory(workingDirectory);
            }
            ffmpegFileName = workingDirectory + ffmpegFileName;
            Logger.Write("Ffmpeg Working Directory: " + ffmpegFileName);
        }

        public void Start(string pathFileName, int BitmapRate)
        {
            try
            {
                string outPath = pathFileName;
                Logger.Write("Output Video File Directory: " + outPath);
                Logger.Write("Frame Rate: " + BitmapRate.ToString());
                p = new NamedPipeServerStream(pipename, PipeDirection.Out, 1, PipeTransmissionMode.Byte);
                b = new byte[1920 * 1080 * 3]; // some buffer for the r g and b of pixels of an image of size 720p

                ProcessStartInfo psi = new ProcessStartInfo();
                psi.WindowStyle = ProcessWindowStyle.Hidden;
                psi.UseShellExecute = false;
                psi.CreateNoWindow = true;
                psi.FileName = ffmpegFileName;
                psi.WorkingDirectory = workingDirectory;
                psi.Arguments = @"-f rawvideo -pix_fmt bgr0 -video_size 1920x1080 -i \\.\pipe\mytestpipe -map 0 -c:v libx264 -r " + BitmapRate + " " + outPath;
                Logger.Write("ProcessStartInfo Arguments" + @"-f rawvideo -pix_fmt bgr0 -video_size 1920x1080 -i \\.\pipe\mytestpipe -map 0 -c:v libx264 -r " + BitmapRate + " " + outPath);
                //psi.RedirectStandardOutput = true;
                process = Process.Start(psi);
                process.EnableRaisingEvents = false;
                p.WaitForConnection();
            }
            catch (Exception err)
            {
                Logger.Write("Exception Error: " + err.ToString());
            }
        }

例外情况就在线上：

process = Process.Start(psi);

例外是：

6/9/2013--6:11 PM ==> Exception Error: System.ComponentModel.Win32Exception (0x80004005): The system cannot find the file specified
   at System.Diagnostics.Process.StartWithCreateProcess(ProcessStartInfo startInfo)
   at System.Diagnostics.Process.Start()
   at System.Diagnostics.Process.Start(ProcessStartInfo startInfo)
   at ScreenVideoRecorder.Ffmpeg.Start(String pathFileName, Int32 BitmapRate) in d:\C-Sharp\ScreenVideoRecorder\ScreenVideoRecorderWorkingVersion\Ffmpeg.cs:line 56

ffmpeg.exe文件和应用程序exe文件都在程序文件....等我可以从那里运行应用程序，但应用程序无法在那里找到ffmpeg.exe文件

编辑*

现在尝试使用此代码：

class Ffmpeg
    {
        NamedPipeServerStream p;
        String pipename = "mytestpipe";
        byte[] b;
        System.Diagnostics.Process process;
        string ffmpegFileName = @"\ffmpeg.exe";
        string workingDirectory;

        public Ffmpeg()
        {
            workingDirectory = Application.StartupPath; //Path.GetDirectoryName(Application.ExecutablePath);// +@"\workingDirectory";
            if (!Directory.Exists(workingDirectory))
            {
                Directory.CreateDirectory(workingDirectory);
            }
            ffmpegFileName = Path.Combine(workingDirectory, ffmpegFileName);//@"\ffmpeg.exe";
            Logger.Write("Ffmpeg Working Directory: " + ffmpegFileName);
        }

        public void Start(string pathFileName, int BitmapRate)
        {
            try
            {
                string outPath = pathFileName;
                Logger.Write("Output Video File Directory: " + outPath);
                Logger.Write("Frame Rate: " + BitmapRate.ToString());
                p = new NamedPipeServerStream(pipename, PipeDirection.Out, 1, PipeTransmissionMode.Byte);
                b = new byte[1920 * 1080 * 3]; // some buffer for the r g and b of pixels of an image of size 720p

                ProcessStartInfo psi = new ProcessStartInfo();
                psi.WindowStyle = ProcessWindowStyle.Hidden;
                psi.UseShellExecute = false;
                psi.CreateNoWindow = true;
                psi.FileName = ffmpegFileName;
                psi.WorkingDirectory = workingDirectory;
                psi.Arguments = @"-f rawvideo -pix_fmt bgr0 -video_size 1920x1080 -i \\.\pipe\mytestpipe -map 0 -c:v libx264 -r " + BitmapRate + " " + outPath;
                Logger.Write("ProcessStartInfo Arguments" + @"-f rawvideo -pix_fmt bgr0 -video_size 1920x1080 -i \\.\pipe\mytestpipe -map 0 -c:v libx264 -r " + BitmapRate + " " + outPath);
                //psi.RedirectStandardOutput = true;
                process = Process.Start(psi);
                process.EnableRaisingEvents = false;
                p.WaitForConnection();
            }
            catch (Exception err)
            {
                Logger.Write("Exception Error: " + err.ToString());
            }
        }

与上述相同的例外。

Answer 1

Assembly.GetExecutingAssembly().Location //is what you need here

Answer 2

Path.GetDirectoryName()方法返回目录路径，不带斜杠。要使用它构建文件路径，您必须自己添加它。

最好是让框架为你做，有时它不是普通的反斜杠：

ffmpegFileName = Path.Combine(workingDirectory, ffmpegFileName);

我怎么能得到我运行我的应用程序exe文件的目录？

2 个答案: