.NET C#數據庫接口類

using System;
using System.Data;
using System.Data.SqlClient;
using System.Web.UI;
using System.Collections;
//using Microsoft.Web.UI.WebControls;
using System.Configuration;

namespace Dinly
{
  
 /// <summary>
 /// Fc 的摘要說明。
 /// </summary>
 /// 
  
 ////////////////////用於連接Sql數據庫的連接類
     public class userConn
   {
       
       /// <summary>
       /// 獲取連接字符串
       /// </summary>
       public static string ConnString
    {
     get 
     {
      return ConfigurationSettings.AppSettings["ConnString"];
     }
    }

       public SqlConnection objConn;
    public SqlDataAdapter objDataAdapter;
    public DataSet objDataSet;
    public DataTable objDataTable;
       public SqlCommand myCommand;

    /// <summary>
    /// 初始化每個對象
    /// </summary>
    public userConn()
    {
     objConn = new SqlConnection(userConn.ConnString);
     objConn.Open();
    }

                
      /// <summary>
      /// 打開適配器
      /// </summary>
      /// <param name="StrSql"></param>
      public void Da(string StrSql)
    {
       objDataAdapter=new SqlDataAdapter(StrSql,objConn);
    }

     /// <summary>
     /// 打開數據集
     /// </summary>
     /// <param name="StrSql"></param>
     /// <param name="TableName"></param>
      public void Ds(string StrSql,string TableName)
    {
     Da(StrSql);
     objDataSet=new DataSet();
     objDataAdapter.Fill(objDataSet,TableName);
    }

              /// <summary>
              /// 打開數據表
              /// </summary>
              /// <param name="StrSql"></param>
              /// <param name="TableName"></param>
              /// <returns></returns>
    public DataTable Dt(string StrSql,string TableName)
    {
     Ds(StrSql,TableName);
     objDataTable=objDataSet.Tables[TableName];
     ConnClose();
     return objDataTable;
    }

    /// <summary>
    /// 關閉連接
    /// </summary>
    public void ConnClose()
     {
      objConn.Close();
      return;
     }
    /// <summary>
    /// 返回字段的標題
    /// </summary>
    /// <param name="FieldName"></param>
    /// <returns></returns>
    public string ReturnFieldTitle(string FieldName)
    {
     DataTable DtField;
     string strSql="select Description from sys_field where FieldName=/'"+FieldName+"/'";
     DtField=this.Dt(strSql,"sys_field";
     
     if (DtField.DefaultView.Count==0)
     {
      return null;
     }
     else
     {
      return DtField.Rows[0]["Description"].ToString();
     }

    }
   
    /// <summary>
    /// 執行Sql語句
    /// </summary>
    /// <param name="Sql"></param>
    public void ExecuteSql(string Sql)
    {
     
     SqlCommand oComm=new SqlCommand(Sql,this.objConn);
     oComm.CommandType=CommandType.Text;
     oComm.ExecuteNonQuery();
    }
   }
}