DBhelper.cs

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using System;
using System.Data;
using System.Configuration;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Data.SqlClient;
//获得更有效最新源码请下载看这里：http://www.51aspx.com
namespace Eclipse.HRM.UI
{
    public class DBhelper
    {   
        private static System.Data.SqlClient.SqlConnection Conn = new System.Data.SqlClient.SqlConnection("Data Source=.;Initial Catalog=Eclipse_HRM;Persist Security Info=True;User ID=sa;Password=51Aspx");
        //sql 语句: update , delete, insert,返回是否成功
        public static bool ExeQuery(string CommandText)
        {
            try
            {
                if (Conn.State == ConnectionState.Closed)
                {
                    Conn.Open();
                }
                System.Data.SqlClient.SqlCommand Cd = new System.Data.SqlClient.SqlCommand(CommandText, Conn);
                Cd.ExecuteNonQuery();
                return true;
            }
            catch
            {
                return false;
            }
            finally
            {
                if (Conn.State == ConnectionState.Open)
                {
                    Conn.Close();
                }
            }      
        }

        //sql语句:select
        public static DataTable GetDataTable(string SelectText)
        {
            try
            {
                DataTable dt = new DataTable();
                System.Data.SqlClient.SqlCommand Cd = new System.Data.SqlClient.SqlCommand(SelectText, Conn);
                System.Data.SqlClient.SqlDataAdapter Da = new System.Data.SqlClient.SqlDataAdapter(Cd);
                Da.Fill(dt);
                return dt;
            }
            catch (Exception E)
            {
                throw E;
            }
            finally