static void Main(string[] args)
{
using (SqlConnection conn=new SqlConnection (@"Data Source=DELLSQL;Initial Catalog=ADO.net;Integrated Security=True"))
{
conn.Open();
using (SqlCommand cmd=conn.CreateCommand ())
{
cmd.CommandText = "insert into kk (Usename,Password)output inserted.id values('a','b')";
int i = Convert.ToInt32(cmd.ExecuteScalar());
Console.WriteLine("插入的id是{0}", i);
Console.WriteLine("OK");
Console.WriteLine("请输入用户名");
string usename=Console .ReadLine();
Console .WriteLine ("请输入密码");
string password=Console .ReadLine ();
using (SqlConnection conn = new SqlConnection(@"Data Source=DELLSQL;Initial Catalog=ADO.net;Integrated Security=True"))
{
conn.Open();
using (SqlCommand cmd=conn.CreateCommand ())
{
cmd.CommandText = "select count(*) from kk where Usename=@UN and Password=@P";
cmd.Parameters.Add(new SqlParameter("Un", usename));
cmd.Parameters.Add(new SqlParameter("P", password));
int i = Convert.ToInt32(cmd.ExecuteScalar());
if (i>0)
{
Console.WriteLine("登陆成功");
}
else
{
Console.WriteLine("登陆失败");
}
}
Console.ReadKey();