private List <DBaiThi> LayDeThi(string maMH, char trinhDo, int socau)
{
List <DBaiThi> deThi = new List <DBaiThi>();
string[] name = { "@mamh", "@trinhdo", "@socau", "@malop", "@lan" };
object[] param = { maMH, trinhDo, socau, DBAccess.donVi, lan };
DataTable dt = DBAccess.ExecuteQuery("SP_LayDeThi", name, param, 5);
foreach (DataRow dr in dt.Rows)
{
DBaiThi db = new DBaiThi
{
NoiDung = dr[0].ToString(),
A = dr[1].ToString(),
B = dr[2].ToString(),
C = dr[3].ToString(),
D = dr[4].ToString(),
DapAn = dr[5].ToString()[0]
};
deThi.Add(db);
}
return(deThi);
}
private void LayDe()
{
List <DBaiThi> dt = LayDeThi(this.maMH, this.trinhDo, this.soCau);
foreach (DBaiThi bt in dt)
{
List <char> dapAn = new List <char> {
'A', 'B', 'C', 'D'
};
string[] dapAnTron = new string[4];
char da = 'A';
Random rnd = new Random();
for (int i = 0; i < 4; i++)
{
char d = dapAn[rnd.Next(dapAn.Count)];
dapAn.Remove(d);
switch (d)
{
case 'A':
dapAnTron[i] = bt.A;
if (bt.DapAn == 'A')
{
da += (char)i;
}
break;
case 'B':
dapAnTron[i] = bt.B;
if (bt.DapAn == 'B')
{
da += (char)i;
}
break;
case 'C':
dapAnTron[i] = bt.C;
if (bt.DapAn == 'C')
{
da += (char)i;
}
break;
case 'D':
dapAnTron[i] = bt.D;
if (bt.DapAn == 'D')
{
da += (char)i;
}
break;
}
}
DBaiThi ndt = new DBaiThi
{
NoiDung = bt.NoiDung,
DapAn = da,
A = dapAnTron[0],
B = dapAnTron[1],
C = dapAnTron[2],
D = dapAnTron[3],
Chon = ' ',
TrangThai = "sai"
};
baiThi.Add(ndt);
}
}
