Change screen resolution

// Change resolution to 1024x768

// For Chrome browser
ChromeOptions capabilities = new ChromeOptions();
capabilities.BrowserVersion = "95.0";
Dictionary<string, object> browserstackOptions = new Dictionary<string, object>();
browserstackOptions.Add("resolution", "1024x768");
// Set the selenium version to 4.0.0.
browserstackOptions.Add("seleniumVersion", "4.0.0");
capabilities.AddAdditionalOption("bstack:options", browserstackOptions);

// For Edge browser
EdgeOptions capabilities = new EdgeOptions();
capabilities.BrowserVersion = "95.0";
Dictionary<string, object> browserstackOptions = new Dictionary<string, object>();
browserstackOptions.Add("resolution", "1024x768");
// Set the selenium version to 4.0.0.
browserstackOptions.Add("seleniumVersion", "4.0.0");
capabilities.AddAdditionalOption("bstack:options", browserstackOptions);

// For IE browser
InternetExplorerOptions capabilities = new InternetExplorerOptions();
capabilities.BrowserVersion = "11.0";
Dictionary<string, object> browserstackOptions = new Dictionary<string, object>();
browserstackOptions.Add("resolution", "1024x768");
// Set the selenium version to 4.0.0.
browserstackOptions.Add("seleniumVersion", "4.0.0");
capabilities.AddAdditionalOption("bstack:options", browserstackOptions);

// For Firefox browser
FirefoxOptions capabilities = new FirefoxOptions();
capabilities.BrowserVersion = "95.0";
Dictionary<string, object> browserstackOptions = new Dictionary<string, object>();
browserstackOptions.Add("resolution", "1024x768");
// Set the selenium version to 4.0.0.
browserstackOptions.Add("seleniumVersion", "4.0.0");
capabilities.AddAdditionalOption("bstack:options", browserstackOptions);

// Change resolution to 1024x768

// For Chrome browser
OpenQA.Selenium.Chrome.ChromeOptions chromeCapability = new OpenQA.Selenium.Chrome.ChromeOptions();
capability.AddAdditionalCapability("resolution", "1024x768", true);

// For Edge browser
OpenQA.Selenium.Edge.EdgeOptions edgecapability = new OpenQA.Selenium.Edge.EdgeOptions();
capability.AddAdditionalCapability("resolution", "1024x768");

// For IE browser
OpenQA.Selenium.IE.InternetExplorerOptions ieCapability = new OpenQA.Selenium.IE.InternetExplorerOptions();
capability.AddAdditionalCapability("resolution", "1024x768", true);

// For Firefox browser
OpenQA.Selenium.Firefox.FirefoxOptions firefoxCapability = new OpenQA.Selenium.Firefox.FirefoxOptions();
capability.AddAdditionalCapability("resolution", "1024x768", true);

// For Safari browser
OpenQA.Selenium.Safari.SafariOptions safariCapability = new OpenQA.Selenium.Safari.SafariOptions();
safariCapability.AddAdditionalCapability("resolution", "1024x768");

using System;
using System.Collections.Generic;
using System.IO;
using Newtonsoft.Json;
using OpenQA.Selenium;
using OpenQA.Selenium.Chrome;
using OpenQA.Selenium.Remote;
namespace SeleniumTest
{
    class Test
    {
        static void Main(string[] args)
        {
            RemoteWebDriver driver;
            ChromeOptions capabilities = new ChromeOptions();
            capabilities.BrowserVersion = "95.0";
            Dictionary<string, object> browserstackOptions = new Dictionary<string, object>();
            browserstackOptions.Add("os", "Windows");
            browserstackOptions.Add("osVersion", "10");
            // Set the resolution using the 'resolution' capability.
            browserstackOptions.Add("resolution", "1024x768");
            browserstackOptions.Add("buildName", "Csharp- Screen Resolution test Sample Build");
            browserstackOptions.Add("sessionName", "Screen Resolution test");
            // Set the selenium version.
            browserstackOptions.Add("seleniumVersion", "4.0.0");
            browserstackOptions.Add("userName", "YOUR_USERNAME");
            browserstackOptions.Add("accessKey", "YOUR_ACCESS_KEY");
            capabilities.AddAdditionalOption("bstack:options", browserstackOptions);
            
            driver = new RemoteWebDriver(
                new Uri("https://hub-cloud.browserstack.com/wd/hub/"), capabilities
                );
            driver.Navigate().GoToUrl("https://www.browserstack.com/");
            driver.Quit();
        }
    }
}

using System;
using System.IO;
using Newtonsoft.Json;
using OpenQA.Selenium;
using OpenQA.Selenium.Remote;
namespace SeleniumTest
{
    class Program
    {
        static void Main(string[] args)
        {
            RemoteWebDriver driver;
            OpenQA.Selenium.Chrome.ChromeOptions capability = new OpenQA.Selenium.Chrome.ChromeOptions();
            capability.AddAdditionalCapability("os_version", "10", true);
            capability.AddAdditionalCapability("os", "Windows", true);
            capability.AddAdditionalCapability("name", "Screen Resolution test", true); // test name
            capability.AddAdditionalCapability("build", "Csharp- Screen Resolution test Sample Build", true); // CI/CD job or build name
            capability.AddAdditionalCapability("browserstack.user", "YOUR_USERNAME", true);
            capability.AddAdditionalCapability("browserstack.key", "YOUR_ACCESS_KEY", true);
            // Set the resolution using the 'resolution' capability.
            capability.AddAdditionalCapability("resolution", "1024x768", true);
            driver = new RemoteWebDriver(
                new Uri("https://hub-cloud.browserstack.com/wd/hub/"), capability
                );
            driver.Navigate().GoToUrl("https://www.browserstack.com/");
            driver.Quit();
        }
    }
}