connectionmanager.cs

关于网上购物的

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;

/// <summary>
/// connectionManager 的摘要说明
/// </summary>
public class connectionManager
{
    SqlConnection con = new SqlConnection();
    DataSet ds = new DataSet();
    DataTable dt = new DataTable();
	public connectionManager()
	{
		//
		// TODO: 在此处添加构造函数逻辑
		//
	}

    public SqlConnection connection()
    {
        
        con.ConnectionString = ConfigurationManager.ConnectionStrings["goods"].ConnectionString;
        con.Open();
        return con;
        
    }
    public DataTable gettable(string sql)
    {

        SqlDataAdapter da = new SqlDataAdapter(sql,connection());
        da.Fill(ds);
        dt = ds.Tables[0];
        con.Close();
        return dt;
    }

    public int updata(string sql)
    {
        SqlCommand com = new SqlCommand();
        com.CommandType=CommandType.Text;
        com.CommandText = sql;
        com.Connection = connection();
        int i = com.ExecuteNonQuery();
        con.Close();
        return i;
    }
}