DAL/SysManage.cs

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using System;
using System.Text;
using System.Data;
using System.Data.SqlClient;
using Maticsoft.Model;
using Maticsoft.DBUtility;
namespace Maticsoft.DAL
{
	/// <summary>
	/// 用参数方式实现数据层示例。
	/// </summary>
	public class SysManage //这里必须实现接口，否则工厂类创建接口报错
	{
		public SysManage()
		{			
		}		

		public int GetMaxId()
		{          
			return DbHelperSQL.GetMaxID("NodeID", "S_Tree");           
		}

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

		public int AddTreeNode(SysNode model)
		{
			model.NodeID=GetMaxId();

			StringBuilder strSql=new StringBuilder();
			strSql.Append("insert into S_Tree(");
			strSql.Append("NodeID,Text,ParentID,Location,OrderID,comment,Url,PermissionID,ImageUrl)");
			strSql.Append(" values (");
			strSql.Append("@NodeID,@Text,@ParentID,@Location,@OrderID,@comment,@Url,@PermissionID,@ImageUrl)");
				
			//
			SqlParameter[] parameters = {
											new SqlParameter("@NodeID", SqlDbType.Int,4),
											new SqlParameter("@Text", SqlDbType.VarChar,100),
											new SqlParameter("@ParentID", SqlDbType.Int,4),										
											new SqlParameter("@Location", SqlDbType.VarChar,50),
											new SqlParameter("@OrderID", SqlDbType.Int,4),
											new SqlParameter("@comment", SqlDbType.VarChar,50),
											new SqlParameter("@Url", SqlDbType.VarChar,100),
											new SqlParameter("@PermissionID", SqlDbType.Int,4),
											new SqlParameter("@ImageUrl", SqlDbType.VarChar,100)};
			parameters[0].Value = model.NodeID;