DAL/Student.cs

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using System;
using System.Data;
using System.Text;
using System.Data.SqlClient;
using Maticsoft.DBUtility;//Please add references
namespace StudentExamination.DAL
{
	/// <summary>
	/// 数据访问类:Student
	/// </summary>
	public partial class Student
	{
		public Student()
		{}
		#region  Method

		/// <summary>
		/// 得到最大ID
		/// </summary>
		public int GetMaxId()
		{
		return DbHelperSQL.GetMaxID("StudentID", "Student"); 
		}

		/// <summary>
		/// 是否存在该记录
		/// </summary>
		public bool Exists(int StudentID)
		{
			StringBuilder strSql=new StringBuilder();
			strSql.Append("select count(1) from Student");
			strSql.Append(" where StudentID=@StudentID");
			SqlParameter[] parameters = {
					new SqlParameter("@StudentID", SqlDbType.Int,4)
			};
			parameters[0].Value = StudentID;

			return DbHelperSQL.Exists(strSql.ToString(),parameters);
		}


		/// <summary>
		/// 增加一条数据
		/// </summary>
		public int Add(StudentExamination.Model.Student model)
		{
			StringBuilder strSql=new StringBuilder();
			strSql.Append("insert into Student(");
			strSql.Append("StudentCode,DepartmentID,ClassID,IsUsed,StudentName,Password,CreaeDate)");
			strSql.Append(" values (");
			strSql.Append("@StudentCode,@DepartmentID,@ClassID,@IsUsed,@StudentName,@Password,@CreaeDate)");
			strSql.Append(";select @@IDENTITY");
			SqlParameter[] parameters = {
					new SqlParameter("@StudentCode", SqlDbType.NVarChar,50),
					new SqlParameter("@DepartmentID", SqlDbType.Int,4),
					new SqlParameter("@ClassID", SqlDbType.NVarChar,50),
					new SqlParameter("@IsUsed", SqlDbType.Int,4),
					new SqlParameter("@StudentName", SqlDbType.NVarChar,50),
					new SqlParameter("@Password", SqlDbType.NVarChar,50),
					new SqlParameter("@CreaeDate", SqlDbType.DateTime)};