@Joseph : Did you find any solution to this issue, I am having similar requirement. Looking for the solution.
NainaSoni90
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in my requirement the downloaded package is a support package for further task to perform, so it has to be downloaded and instal first, now this is my first Mac project, all I understand is Mac doesn't allow to install anything which is not downloaded from trusted env. and we need to change setting to allow from anywhere.
but I need to do this from code. (install and execute)
similar to below code of Windows, Could you suggest any better approach or tell me if I am on a wrong approach.
public static void ExecuteExe(string exePath)
{
	Process process = new Process();
		process.StartInfo.FileName = exePath;
		process.StartInfo.UseShellExecute = false;
		process.StartInfo.RedirectStandardOutput = true;
		process.StartInfo.CreateNoWindow = true;
		process.StartInfo.RedirectStandardError = true;
		process.Start();
		process.WaitForExit();
}
Yes it is sandboxed.