I don't know C# but here's Java code that does the job, I hope you can translate it to C#

import org.openqa.selenium.WebDriver;

import org.openqa.selenium.chrome.ChromeDriver;

import org.openqa.selenium.logging.LogEntries;

import org.openqa.selenium.logging.LogEntry;

import org.openqa.selenium.logging.LogType;

import org.openqa.selenium.logging.LoggingPreferences;

import org.openqa.selenium.remote.CapabilityType;

import org.openqa.selenium.remote.DesiredCapabilities;

import org.testng.annotations.AfterMethod;

import org.testng.annotations.BeforeMethod;

import org.testng.annotations.Test;



public class ChromeConsoleLogging {

    private WebDriver driver;





    @BeforeMethod

    public void setUp() {

        System.setProperty(webdriver.chrome.driver, c:\path\to\chromedriver.exe);        

        DesiredCapabilities caps = DesiredCapabilities.chrome();

        LoggingPreferences logPrefs = new LoggingPreferences();

        logPrefs.enable(LogType.BROWSER, Level.ALL);

        caps.setCapability(CapabilityType.LOGGING_PREFS, logPrefs);

        driver = new ChromeDriver(caps);

    }



    @AfterMethod

    public void tearDown() {

        driver.quit();

    }



    public void analyzeLog() {

        LogEntries logEntries = driver.manage().logs().get(LogType.BROWSER);

        for (LogEntry entry : logEntries) {

            System.out.println(new Date(entry.getTimestamp()) +   + entry.getLevel() +   + entry.getMessage());

            //do something useful with the data

        }

    }



    @Test

    public void testMethod() {

        driver.get(http://mypage.com);

        //do something on page

        analyzeLog();

    }

}

Pay attention to setUp method in above code. We use LoggingPreferences object to enable logging. There are a few types of logs, but if you want to track console errors then LogType.BROWSER is the one that you should use. Then we pass that object to DesiredCapabilities and further to ChromeDriver constructor and voila - we have an instance of ChromeDriver with logging enabled.

After performing some actions on page we call analyzeLog() method. Here we simply extract the log and iterate through its entries. Here you can put assertions or do any other reporting you want.

My inspiration was this code by Michael Klepikov that explains how to extract performance logs from ChromeDriver.