C# C/S框架高级搜索功能-接口设计

/// <summary>
/// 支持高级搜索功能
/// </summary>
public interface ISupportAdvancedSearch
{
   /// <summary>
   /// 高级搜索的方法
   /// </summary>
   /// <param name="whereSQL">高级搜索组合的查询条件</param>
   /// <returns>返回查询的对象</returns>
   object AdvancedSearch(string whereSQL);
}

// 来源:www.CSFramework.com, C/S结构框架学习网

namespace AdvancedSearch
{
   /// <summary>
   /// 业务逻辑类
   /// </summary>
   public class bllCustomer : ISupportAdvancedSearch
   {
      #region ISupportAdvancedSearch Members
      
      /// <summary>
      /// 高级查询功能
      /// </summary>
      /// <param name="whereSQL">查询条件</param>
      /// <returns></returns>
      public object AdvancedSearch(string whereSQL)
      {
         //在这里写代码从SQL取数据．
         
         return null;
      }
      
      #endregion
      
      /// <summary>
      /// 普通查询方法
      /// </summary>
      public object Search(string p, string p_2)
      {
         //在这里写代码从SQL取数据．
         
         return null;
      }
   }
}

// 来源:www.CSFramework.com, C/S结构框架学习网

private void btnSearch_Click(object sender, EventArgs e)
{
   gcSummary.DataSource = _BLL.Search("", "");
   
   //方便演示，直接读取XML数据
   DataTable dt = new DataTable("tb_MyUser");
   dt.ReadXml(Application.StartupPath "\\db.xml");
   gcSummary.DataSource = dt;
}

private void btnAdvanceSearch_Click(object sender, EventArgs e)
{
   //打开高级搜索功能
   frmAdvancedSearch.Execute(gvSummary, _BLL);
}

// 来源:www.CSFramework.com, C/S结构框架学习网