Selectively capturing console output in C#

// Keep track of the original output writer
TextWriter originalOut = Console.Out;

// Override console output with a custom one
StringWriter buf = new StringWriter();
Console.SetOut(buf);

Console.WriteLine("This will be captured!");

// Capture output!
buf.Flush();
string capturedOutput = buf.ToString();

// Restore original output writer
Console.SetOut(originalOut);