从 C# 运行 Curl 命令

Question

I'm trying to run a curl command from a C# program. My code is below. When I run the code below, I get an exception that the file is not found. I want to be able to do this but I do not want to use a batch file as a parameter for the filename. That is because the arguments for my curl command are variable based upon other conditions in the C# code. My variable strCmdText has the arguments for the curl command (the source and destination files). There are other examples of this on Stackoverflow, but they all use a batch file which I'm trying to avoid.

Process p = new Process();
p.StartInfo.UseShellExecute = false;
p.StartInfo.FileName = "C:\\Windows\\System32\\curl.exe";
p.StartInfo.Arguments = strCmdText;
p.StartInfo.UseShellExecute = false;
p.Start();
p.WaitForExit();

I changed my code to the following:

System.Diagnostics.ProcessStartInfo p = new 
    System.Diagnostics.ProcessStartInfo();
    p.UseShellExecute = true;
    p.WorkingDirectory = "C:\\Windows\\System32\\";
    p.FileName = "curl.exe";
    p.ErrorDialog = true;
    p.CreateNoWindow = true;
    System.Diagnostics.Process.Start(p);

From a DOS prompt, curl does exist in this directory. But I still get the curl not found message. Something has to be strange with the path here. When I put a break point in though, and view the Environment class, System32 is in the path.

Answer 1

Curl is available at the location: C:\Windows\System32\curl.exe

That only leaves the source file to be the culprit of a "File not found" issue.

As you're launching curl through a process, ensure that your paths are escaped properly in your startup arguments.

Alternatively, you could launch curl through cmd (through a process), you can try with the following, changing the command-line arguments from --help to suit your desired action.

string script = $"\"C:\\Windows\\System32\\curl.exe\" --help";

Process process = new Process()
{
    StartInfo = new ProcessStartInfo()
    {
        FileName = "cmd",
        Arguments = script
    }
};

process.Start();

Please note that this is in principle, essentially using a batch file as it's just throwing some commands into a cmd.

Answer 2

I had the exact same problem. Just delete curl.exe from System32 and place it on another folder (dont't forget the dependences, dlls, etc.).

Then in the line

p.StartInfo.FileName = "C:\\Windows\\System32\\curl.exe";

Overwrite "C:\\Windows\\System32\\curl.exe" to "C:\\NEW PATH\\curl.exe" .

Note: You MUST delete it from System32. If you just copy to the new location it will still don't work.