I tied this way to reset password and send it to the user
if (userId != string.Empty)
{
string _newPass = RandomPass();
if (manager.HasPassword(userId))
{
IdentityResult ir1 = manager.RemovePassword(userId);
if (ir1.Succeeded)
{
IdentityResult ir2 = manager.AddPassword(userId, _newPass);
if (ir1.Succeeded && ir2.Succeeded)
{
//Send password to user via sms or email
Response.Redirect("~/RecoverPassword?m=ChangePwdSuccess");
}
else
{
AddErrors(ir1);
AddErrors(ir2);
}
}
}
}