Opening the new url in the same page in selenium

Awesome! Nice to hear, your issue has been resolved. 

Thanks for your intrest Muhammad Imran. But it is not the thing I want. I have solved the prbolem with the c-following code.

drv.SwitchTo().Window(drv.WindowHandles.ToList().Last());

In Selenium with C#, you can open a new URL in the same browser window by using the Navigate().GoToUrl() method. Here's an example of how you can achieve this in a Windows Forms application:

public partial class YourForm : Form
{
	// Create a Selenium WebDriver instance
	private IWebDriver driver;

	public YourForm()
	{
		InitializeComponent();

		// Initialize the WebDriver (assuming you are using Chrome)
		driver = new ChromeDriver();
	}

	private void OpenUrlButton_Click(object sender, EventArgs e)
	{
		// Get the URL from your textbox or any other source
		string url = YourTextBox.Text;

		// Navigate to the new URL in the same browser window
		driver.Navigate().GoToUrl(url);
	}

	// Remember to close the WebDriver when the form is closed
	private void YourForm_FormClosed(object sender, FormClosedEventArgs e)
	{
		driver.Quit();
	}
}

In the above code snippet, I'm assuming that you have a TextBox named YourTextBox where you can input the URL and a button named OpenUrlButton that triggers the navigation.