PasswordSignInAsync
/// <summary>
/// Attempts to sign in the specified <paramref name="userName"/> and <paramref name="password"/> combination
/// as an asynchronous operation.
/// </summary>
/// <param name="userName">The user name to sign in.</param>
/// <param name="password">The password to attempt to sign in with.</param>
/// <param name="isPersistent">Flag indicating whether the sign-in cookie should persist after the browser is closed.</param>
/// <param name="lockoutOnFailure">Flag indicating if the user account should be locked if the sign in fails.</param>
/// <returns>The task object representing the asynchronous operation containing the <see name="SignInResult"/>
/// for the sign-in attempt.</returns>
public virtual async Task<SignInResult> PasswordSignInAsync(string userName, string password,
bool isPersistent, bool lockoutOnFailure)
{
var user = await UserManager.FindByNameAsync(userName);
if (user == null)
{
return SignInResult.Failed;
}
return await PasswordSignInAsync(user, password, isPersistent, lockoutOnFailure);
}