自用DBClass SQLServer数据库操作类

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

/**//// <summary>
/// DBClass : SQL Server 数据库 操作类
/// </summary>
/// <remarks>
/// </remarks>
/// <history>
///     xx. YYYY/MM/DD   VER     AUTHOR      COMMENTS        
///      1. 2008/03/04           Free        CREATE
/// </history>

public class DBClass
{
    SqlConnection theSqlConnection = new SqlConnection();

    得到数据库连接字串#region 得到数据库连接字串
    static public string DBConnString()
    {
        string strConn = System.Configuration.ConfigurationManager.ConnectionStrings["DBConnectionString"].ToString();
        return strConn;
    }
    #endregion

    运行Select查询 得到一个DataSet#region 运行Select查询 得到一个DataSet
    public static DataSet RunSelectGetDataSet(string strSelect)
    {
        DataSet ds = new DataSet(); 
        using (SqlConnection sqlConn = new SqlConnection(DBClass.DBConnString()))
        {
            sqlConn.Open();            
            SqlDataAdapter da = new SqlDataAdapter(strSelect, sqlConn);
            da.Fill(ds);
            sqlConn.Close();
        }
        return ds;
    }
    #endregion

    运行查询 得到DataTable#region 运行查询 得到DataTable
    public static DataTable RunSelectGetDataTable(string strSelect)
    {
        DataTable dt = new DataTable();
        using (SqlConnection sqlConn = new SqlConnection(DBClass.DBConnString()))
        {
            sqlConn.Open();
            SqlDataAdapter da = new SqlDataAdapter(strSelect, sqlConn);
            da.Fill(dt);
            sqlConn.Close();
        }
        return dt;
    }
    #endregion

    运行非Select的Insert或Update或Delete语句 成功返回true 否则返回false#region 运行非Select的Insert或Update或Delete语句 成功返回true 否则返回false
    /**//// <summary>
    /// 运行非Select的Insert或Update或Delete语句 成功返回true 否则返回false
    /// </summary>
    /// <param name="strCommand">Insert或Update或Delete语句</param>
    /// <returns>成功返回true 否则返回false</returns>
    public static Boolean RunNotSelectSqlCommand(string strCommand)
    {
        try
        {
            using (SqlConnection sqlConn = new SqlConnection(DBClass.DBConnString()))
            {
                sqlConn.Open();
                SqlCommand sqlComm = new SqlCommand(strCommand, sqlConn);
                sqlComm.ExecuteNonQuery();
                sqlConn.Close();
            }
            return true;
        }
        catch (Exception ex)
        {
            return false;
        }
    }
    #endregion

}