在Selenium Google ChromeDriver中禁用图像

Question

通过Selenium和c＃使用图像时，如何禁用Google chrome中的图像？

我尝试了6种方法，但均无效果。

• Chrome驱动程序：V2.2
• Chrome版本：V29.0.1547.66 m
• selenium：V2.35

我所做的所有尝试都不会引起异常，它们可以正常运行，但仍显示图像：

尝试1：

ChromeOptions co = new ChromeOptions();
co.AddArgument("--disable-images");
IWebDriver driver = new ChromeDriver(co);

尝试2：

DesiredCapabilities capabilities = DesiredCapabilities.Chrome();
capabilities.SetCapability("chrome.switches", new string[1] { "disable-images" });

尝试3：

ChromeOptions co = new ChromeOptions();
co.AddAdditionalCapability("chrome.switches", new string[1] { "disable-images" });

尝试4：

var imageSetting = new Dictionary<string, object>();
imageSetting.Add("images", 2);
Dictionary<string, object> content = new Dictionary<string, object>();
content.Add("profile.default_content_settings", imageSetting);
var prefs = new Dictionary<string, object>();
prefs.Add("prefs", content);
var options = new ChromeOptions();
var field = options.GetType().GetField("additionalCapabilities", BindingFlags.Instance | BindingFlags.NonPublic);
if (field != null)
{
    var dict = field.GetValue(options) as IDictionary<string, object>;
    if (dict != null)
        dict.Add(ChromeOptions.Capability, prefs);
}

尝试5：

ChromeOptions options = new ChromeOptions();
options.AddAdditionalCapability("profile.default_content_settings", 2);

尝试6：

Dictionary<String, Object> contentSettings = new Dictionary<String, Object>();
contentSettings.Add("images", 2);
Dictionary<String, Object> preferences = new Dictionary<String, Object>();
preferences.Add("profile.default_content_settings", contentSettings);
DesiredCapabilities caps = DesiredCapabilities.Chrome();
caps.SetCapability("chrome.prefs", preferences);

Answer 1

使用http://chrome-extension-downloader.com/下载“阻止图片”扩展程序（https://chrome.google.com/webstore/detail/block-
image/pehaalcefcjfccdpbckoablngfkfgfgj?hl=zh-
CN

）。该扩展名可防止首先下载图像。现在，只需使用以下语句加载它即可：

    var options = new ChromeOptions();

    //use the block image extension to prevent images from downloading.
    options.AddExtension("Block-image_v1.0.crx");

    var driver = new ChromeDriver(options);