Subject类

using System;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;
using System.Collections;

namespace Db
{
 /// <summary>
 /// Subject 的摘要说明。
 /// </summary>
 public class Subject
 {
  public Subject()
  {
   //
   // TODO: 在此处添加构造函数逻辑
   //
  }

  private SqlConnection conn;
  private SqlCommand cmd;
  private SqlDataReader dr;

  public void addSubject(ArrayList a)
  {
   conn = new SqlConnection(Str.con);
   cmd = new SqlCommand("Subject_add",conn);
   cmd.CommandType = CommandType.StoredProcedure;

   cmd.Parameters.Add("@Subject",SqlDbType.VarChar,50).Value = a[0];
   cmd.Parameters.Add("@AddDate",SqlDbType.VarChar,50).Value = a[1];
   cmd.Parameters.Add("@Img",SqlDbType.VarChar,200).Value = a[2];

   conn.Open();
   try
   {
    cmd.ExecuteNonQuery();
   }
   catch(Exception ex)
   {
    throw new Exception(ex.Message);
   }
   finally
   {
    cmd.Dispose();
    conn.Close();
   }
  }

  public SqlDataReader drTop8()
  {
   conn = new SqlConnection(Str.con);
   cmd = new SqlCommand("Subject_selTop8",conn);
   cmd.CommandType = CommandType.StoredProcedure;

   conn.Open();
   dr = cmd.ExecuteReader(CommandBehavior.CloseConnection);
   return dr;
  }

  public SqlDataReader drSubject()
  {
   conn = new SqlConnection(Str.con);
   cmd = new SqlCommand("Subject_sel",conn);
   cmd.CommandType = CommandType.StoredProcedure;

   conn.Open();
   dr = cmd.ExecuteReader(CommandBehavior.CloseConnection);
   return dr;
  }

  public void modSubject(ArrayList a)
  {
   conn = new SqlConnection(Str.con);
   cmd = new SqlCommand("Subject_mod",conn);
   cmd.CommandType = CommandType.StoredProcedure;

   cmd.Parameters.Add("@Subject",SqlDbType.VarChar,50).Value = a[0];
   cmd.Parameters.Add("@AddDate",SqlDbType.VarChar,50).Value = a[1];
   cmd.Parameters.Add("@Img",SqlDbType.VarChar,200).Value = a[2];
   cmd.Parameters.Add("@ID",SqlDbType.Int).Value = a[3];

   conn.Open();
   try
   {
    cmd.ExecuteNonQuery();
   }
   catch(Exception ex)
   {
    throw new Exception(ex.Message);
   }
   finally
   {
    cmd.Dispose();
    conn.Close();
   }
  }

  public void delSubject(int a)
  {
   conn = new SqlConnection(Str.con);
   cmd = new SqlCommand("Subject_del",conn);
   cmd.CommandType = CommandType.StoredProcedure;

   cmd.Parameters.Add("@ID",SqlDbType.Int).Value = a;

   conn.Open();
   try
   {
    cmd.ExecuteNonQuery();
   }
   catch(Exception ex)
   {
    throw new Exception(ex.Message);
   }
   finally
   {
    cmd.Dispose();
    conn.Close();
   }
  }
 }
}