Submit form data to your Google Form from dotnet C# with ease! ;) #GoogleFormsToolkitLibrary

SubmitToGoogleForm.cs

/// <summary>
/// Submit Form data to your Google Form
/// </summary>
/// <param name="yourGoogleFormsUrl">
/// Link to your Google Form page
/// </param>
/// <param name="formData">
/// Form data dictionary to submit 
/// TKey: FieldSubmissionId - TValue: Value
/// </param>
/// <returns></returns>
public async Task<bool> SubmitToGoogleFormAsync(string yourGoogleFormsUrl, Dictionary<string, string> formData)
{
	// Init HttpClient to send the request
	HttpClient client = new HttpClient();

	// Encode object to application/x-www-form-urlencoded MIME type
	var content = new FormUrlEncodedContent(formData);

	// Post the request (replace with your Google Form link)
	var response = await client.PostAsync(
		yourGoogleFormsUrl,
		content);

	if (response.StatusCode == System.Net.HttpStatusCode.OK)
		return true;

	return false;
}