class.cs

中国海洋大学211工程网站的全部源码

using System;
using System.Data.OleDb;


namespace _211
{
	/// <summary>
	/// Class 的摘要说明。
	/// </summary>
	public class Class:DBTable
	{
		private uint ClassId;
		private string ClassName;

		public Class(uint CI):base("Class")
		{
			ClassId=CI;
			cmd=new OleDbCommand("select * from ["+TableName+"] where ClassId="+ClassId,conn);
			OleDbDataReader dr=cmd.ExecuteReader();
			if(dr.HasRows)
			{
				dr.Read();
				HasRecord=true;
				ClassName=dr.GetValue(1).ToString();
			}
			dr.Close();
			cmd.Dispose();
		}

		public Class(string CN,bool IsReadDataBase):base("Class")
		{
			ClassName=StringManager.LoginLetterSelected(CN);
			if(IsReadDataBase)
			{
				cmd=new OleDbCommand("select * from ["+TableName+"] where ClassName='"+ClassName+"'",conn);
				OleDbDataReader dr=cmd.ExecuteReader();
				if(dr.HasRows)
				{
					dr.Read();
					HasRecord=true;
					ClassId=Convert.ToUInt32(dr.GetValue(0));
				}
				dr.Close();
				cmd.Dispose();
			}
		}

		public override void Add()
		{
			base.Add();

			cmd=new OleDbCommand("insert into "+TableName+" (ClassName) values ('"+ClassName+"')",conn);
			try
			{
				cmd.ExecuteNonQuery();
			}
			catch(Exception ex)
			{
				throw ex;
			}
			finally
			{
				cmd.Dispose();
			}
		}

		public override void Update()
		{
			base.Update();

			cmd=new OleDbCommand("update "+TableName+" set ClassName='"+ClassName+"' where ClassId="+ClassId,conn);
			try
			{
				cmd.ExecuteNonQuery();
			}
			catch(Exception ex)
			{
				throw ex;
			}
			finally
			{
				cmd.Dispose();
			}
		}

		public override void Del()
		{
			base.Del();

			cmd=new OleDbCommand("Delete from "+TableName+" where ClassId="+ClassId,conn);
			try
			{
				cmd.ExecuteNonQuery();
			}
			catch(Exception ex)
			{
				throw ex;
			}
			finally
			{
				cmd.Dispose();
			}
		}

		public uint getClassId()
		{
			return ClassId;
		}

		public string getClassName()
		{
			return ClassName;
		}

		public void setClassName(string CN)
		{
			ClassName=StringManager.LoginLetterSelected(CN);
		}
	}
}