Trying to get StandardOutput after running a console process

Question

I can run a console process using the following C# code. The goal is also to collect all the output from such process:

System.Diagnostics.Process proc = new System.Diagnostics.Process();

proc.StartInfo.Arguments = commandLine;
proc.StartInfo.FileName = "signtool.exe";
proc.StartInfo.RedirectStandardOutput = true;

proc.StartInfo.UseShellExecute = false;

proc.Start();

if (proc.WaitForExit(10000))
{
    Debug.WriteLine(proc.StandardOutput.ReadToEnd());
}

What I receive is this:

"Done Adding Additional Store\r\n"

But when I do the same from a Windows command line I get this:

Done Adding Additional Store
SignTool Error: File not found: C:\SomeBadFile.exe

Why am I getting only the first line of output with my code?

Answer 1

Seeing as the line you are missing seems like an error message, should you not be looking at Process.StandardError Property

When a Process writes text to its standard error stream, that text is normally displayed on the console. By redirecting the StandardError stream, you can manipulate or suppress the error output of a process. For example, you can filter the text, format it differently, or write the output to both the console and a designated log file.

Answer 2

Have you tried redirecting and watching StandardError too? It seem likley that this is output to the error stream.