/// <summary>
/// 判断是否登陆成功
/// </summary>
/// <param name="userName">用户名</param>
/// <param name="password">密码</param>
/// <returns></returns>
public bool LoginIn(string userName, string password)
{
if (IsUserExist(userName))
{
string sql = $"select count(*) from Users Where userName = '******' and password = '******';";
return((int)AccessDbHelper.SelectForScalar(sql) > 0);
}
return(false);
}
/// <summary>
/// 判断用户名是否存在
/// </summary>
/// <param name="userName">用户名</param>
/// <returns>存在或不存在</returns>
public bool IsUserExist(string userName)
{
string sql = $"select count(*) from Users Where userName = '******';";
return((int)AccessDbHelper.SelectForScalar(sql) > 0);
}
