SQLServerDAL/Role.cs

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using System;
using System.Collections.Generic;
using System.Text;
using System.Data;
using System.Data.SqlClient;
using System.Collections;

namespace ZGZY.SQLServerDAL
{
    /// <summary>
    /// 角色（SQL Server数据库实现）
    /// </summary>
    public class Role : ZGZY.IDAL.IRole
    {
        /// <summary>
        /// 根据用户id获取用户角色
        /// </summary>
        public DataTable GetRoleByUserId(int id)
        {
            StringBuilder sb = new StringBuilder();
            sb.Append("select r.id roleid,r.rolename rolename from tbUserRole ur");
            sb.Append(" join tbRole r on r.Id=ur.RoleId");
            sb.Append(" where ur.UserId=@Id");

            return ZGZY.Common.SqlHelper.GetDataTable(ZGZY.Common.SqlHelper.connStr, CommandType.Text, sb.ToString(), new SqlParameter("@Id", id));
        }

        /// <summary>
        /// 根据条件获取角色
        /// </summary>
        public DataTable GetAllRole(string where)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("select * from tbRole");
            if (!string.IsNullOrEmpty(where))
            {
                strSql.Append(" where " + where);
            }
            return ZGZY.Common.SqlHelper.GetDataTable(ZGZY.Common.SqlHelper.connStr, CommandType.Text, strSql.ToString(), null);
        }

        /// <summary>
        /// 根据角色名获取角色
        /// </summary>
        public Model.Role GetRoleByRoleName(string roleName)
        {
            string sql = "select top 1 * from tbRole where RoleName = @RoleName";
            ZGZY.Model.Role role = null;
            DataTable dt = ZGZY.Common.SqlHelper.GetDataTable(ZGZY.Common.SqlHelper.connStr, CommandType.Text, sql, new SqlParameter("@RoleName", roleName));
            if (dt.Rows.Count > 0)
            {
                role = new ZGZY.Model.Role();
                DataRowToModel(role, dt.Rows[0]);
                return role;
            }
            else
                return null;
        }

        /// <summary>