how to do jason data reader file using in c# nunit frame work

Create a JSON File:
Create a JSON file containing the data you want to read. For example, you can create a file named "testdata.json" with the following content:

json
{
  "username": "your_username",
  "password": "your_password",
  "url": "https://example.com"
}

[Test]
    public void YourTestUsingJSONData()
    {
        // Read JSON data from the file
        string jsonFilePath = "path_to_your_json_file/testdata.json";
        string jsonData = System.IO.File.ReadAllText(jsonFilePath);

        // Deserialize JSON data into a C# object
        dynamic testData = JsonConvert.DeserializeObject(jsonData);

        // Access the data from the JSON object
        string username = testData.username;
        string password = testData.password;
        string url = testData.url;

        // Your test logic using the JSON data
        driver.Navigate().GoToUrl(url);
        driver.FindElement(By.Id("username")).SendKeys(username);
        driver.FindElement(By.Id("password")).SendKeys(password);
        driver.FindElement(By.Id("loginButton")).Click();

        // Add any necessary assertions or verifications
        Assert.IsTrue(driver.Title.Contains("Expected Title"));
    }
}
Replace "path_to_your_json_file/testdata.json" with the actual path to your JSON file. The test method YourTestUsingJSONData reads the JSON data, deserializes it into a C# object, and then you can access the data fields like username, password, and url as shown in the example.

Remember to modify the test logic based on your specific use case and application. This example demonstrates how to read JSON data in C# using Selenium within the NUnit framework and utilize it in your test case.