classdb.cs

电子选课系统 电子选课系统电子选课系统电子选课系统

 using System;
using System.Data;
using System.Data.SqlClient;
using Park.Common;
namespace Park.Common
{
	/// <summary>
	/// ClassDB 的摘要说明。
	/// </summary>
	public class ClassDB
	{
		public static void DeleteClass(string classid)
		{
			SqlConnection myConnection=Utils.GetConnection();

			SqlCommand myCommand = new SqlCommand("ClassSystem_Delete_Class", myConnection);

			// Mark the Command as a SPROC
			myCommand.CommandType = CommandType.StoredProcedure;

			// Add Parameters to SPROC
			SqlParameter ClassID = new SqlParameter("@id", SqlDbType.NVarChar, 20);
			ClassID.Value = classid;
			myCommand.Parameters.Add(ClassID);

			// Execute the command
			myConnection.Open();

			myCommand.ExecuteNonQuery();
			myCommand.Dispose();
			myConnection.Dispose();

			return ;
		}

		public static void GetClassStatus(string classid,out string classname,out string coursename,out string teachername, out string capicity, out DateTime endtime)
		{
			SqlConnection myConnection=Utils.GetConnection();

			SqlCommand myCommand = new SqlCommand("ClassSystem_Get_ClassStatus", myConnection);

			// Mark the Command as a SPROC
			myCommand.CommandType = CommandType.StoredProcedure;

			// Add Parameters to SPROC
			SqlParameter ClassID = new SqlParameter("@id", SqlDbType.Int);
			ClassID.Value = classid;
			myCommand.Parameters.Add(ClassID);

			// Add Parameters to SPROC
			SqlParameter ClassName = new SqlParameter("@classname", SqlDbType.Char, 10);
			ClassName.Direction = ParameterDirection.Output;
			myCommand.Parameters.Add(ClassName);

			// Add Parameters to SPROC
			SqlParameter CourseName = new SqlParameter("@coursename", SqlDbType.NVarChar, 20);
			CourseName.Direction = ParameterDirection.Output;
			myCommand.Parameters.Add(CourseName);

			// Add Parameters to SPROC
			SqlParameter TeacherName = new SqlParameter("@teachername", SqlDbType.Char, 10);
			TeacherName.Direction = ParameterDirection.Output;
			myCommand.Parameters.Add(TeacherName);

			// Add Parameters to SPROC
			SqlParameter Capicity = new SqlParameter("@capicity", SqlDbType.Int);
			Capicity.Direction = ParameterDirection.Output;
			myCommand.Parameters.Add(Capicity);

			// Add Parameters to SPROC
			SqlParameter EndTime = new SqlParameter("@endtime", SqlDbType.SmallDateTime);
			EndTime.Direction = ParameterDirection.Output;
			myCommand.Parameters.Add(EndTime);
			
			// Execute the command
			myConnection.Open();

			myCommand.ExecuteNonQuery();
			classname = ClassName.Value.ToString();
			teachername = TeacherName.Value.ToString();
			coursename = CourseName.Value.ToString();
			capicity = Capicity.Value.ToString();
			try
			{
				endtime = (DateTime)EndTime.Value;
			}
			catch(Exception)
			{
				endtime = DateTime.Now;
			}
			myCommand.Dispose();
			myConnection.Dispose();
		}	

		public static void ChangeClassStatus(string classid,string classname, int capicity, DateTime endtime)
		{
			SqlConnection myConnection=Utils.GetConnection();

			SqlCommand myCommand = new SqlCommand("ClassSystem_Change_ClassStatus", myConnection);

			// Mark the Command as a SPROC
			myCommand.CommandType = CommandType.StoredProcedure;

			// Add Parameters to SPROC
			SqlParameter ClassID = new SqlParameter("@id", SqlDbType.Int);
			ClassID.Value = classid;
			myCommand.Parameters.Add(ClassID);

			// Add Parameters to SPROC
			SqlParameter ClassName = new SqlParameter("@classname", SqlDbType.Char, 10);
			ClassName.Value = classname ;
			myCommand.Parameters.Add(ClassName);

			// Add Parameters to SPROC
			SqlParameter Capicity = new SqlParameter("@capicity", SqlDbType.Int);
			Capicity.Value = capicity;
			myCommand.Parameters.Add(Capicity);

			// Add Parameters to SPROC
			SqlParameter EndTime = new SqlParameter("@endtime", SqlDbType.SmallDateTime);
			EndTime.Value = endtime;
			myCommand.Parameters.Add(EndTime);
			
			// Execute the command
			myConnection.Open();

			myCommand.ExecuteNonQuery();
			myCommand.Dispose();
			myConnection.Dispose();
		}	

	}
}