DAL/SystemLog.cs

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using System;
using System.Data;
using System.Text;
using System.Data.SqlClient;
using DBUtility;
namespace DAL
{
    /// <summary>
    /// 数据访问类:系统日志
    /// </summary>
    public partial class SystemLog
    {
        public SystemLog()
        { }
        #region  Method
        /// <summary>
        /// 是否存在该记录
        /// </summary>
        public bool Exists(int Id)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("select count(1) from dt_SystemLog");
            strSql.Append(" where Id=@Id ");
            SqlParameter[] parameters = {
					new SqlParameter("@Id", SqlDbType.Int,4)};
            parameters[0].Value = Id;

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

        /// <summary>
        /// 返回数据总数(分页用到)
        /// </summary>
        public int GetCount(string strWhere)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("select count(*) as H ");
            strSql.Append(" from dt_SystemLog ");
            if (strWhere.Trim() != "")
            {
                strSql.Append(" where " + strWhere);
            }
            return Convert.ToInt32(DbHelperSQL.GetSingle(strSql.ToString()));
        }

        /// <summary>
        /// 增加一条数据
        /// </summary>
        public int Add(Model.SystemLog model)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("insert into dt_SystemLog(");
            strSql.Append("UserName,Title,AddTime)");
            strSql.Append(" values (");
            strSql.Append("@UserName,@Title,@AddTime)");
            strSql.Append(";select @@IDENTITY");
            SqlParameter[] parameters = {
					new SqlParameter("@UserName", SqlDbType.NVarChar,50),
					new SqlParameter("@Title", SqlDbType.NVarChar,250),
					new SqlParameter("@AddTime", SqlDbType.DateTime)};