DAL/SmpDB.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
//----------------------------------------------
using System.Data;
using System.Data.SqlClient;


namespace TQ.DAL
{
    public class SmpDB
    {
        /// <summary>
        ///  获取数据集
        /// </summary>
        /// <param name="strLink">数据库连接字串</param>
        /// <param name="strSql">SQL语句</param>
        /// <param name="strLink">数据库连接字串</param>
        /// <returns></returns>
        public DataSet GetData(string strLink, string strSql, string strTableName)
        {
            DataSet dsData = new DataSet();
            SqlConnection conn = null;
            //SqlCommand cmd = null;
            SqlDataAdapter ada = null;

            try
            {
                conn = new SqlConnection(strLink);
                conn.Open();

                //cmd = new SqlCommand(strSql, conn);
                //ada = new SqlDataAdapter(cmd);
                ada = new SqlDataAdapter(strSql, conn);
                ada.FillSchema(dsData, SchemaType.Mapped, strTableName);//取出数据结构
                ada.Fill(dsData, strTableName);//填充数据
            }
            catch (Exception ex)
            {
                if (conn.State == ConnectionState.Open)
                    conn.Close();
                throw (new Exception("获取数据出错：\n\t" + ex.Message));
            }

            return dsData;
        }

        /// <summary>
        /// 获取数据集
        /// </summary>
        /// <param name="strLink">数据库连接字串</param>
        /// <param name="Tables">表的扩展集合</param>
        /// <param name="Schema">是否获取结构信息</param>
        /// <returns></returns>
        public DataSet GetData(string strLink, List<TQuery> Tables, bool Schema)
        {
            DataSet ds = new DataSet();
            SqlConnection conn = null;