1.Install latest Chrome,Selenium.WebDriver, ChromeDriver

Selenium.WebDriver 3.141.0;

Selenium.WebDriver.ChromeDriver 78.0.3904.7000;

Google Chrome Version 78.0.3904.70 (Official Build) (64-bit);  

2.

using OpenQA.Selenium.Chrome;
using OpenQA.Selenium;
using System.Reflection;


static void WebDriverDemo(string url = "http://www.tieba.com/p/4325046994#!/l/p1")
        {
            ChromeDriver driver = new ChromeDriver(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location));
            
            driver.Navigate().GoToUrl(url);
            List<IWebElement> lwe = driver.FindElements(By.CssSelector("img")).ToList();

            List<string> imgsList = new List<string>();
            StringBuilder imgBuilder = new StringBuilder();
            foreach(var img in lwe)
            {                 
                string imgUrl = img.GetAttribute("src");
                imgBuilder.AppendLine(imgUrl);
                imgsList.Add(imgUrl);
            }

            File.WriteAllText("lyf.txt", imgBuilder.ToString());
        }