前台获取后台datatable

方法一：

前台代码：

 

代码

   
     

    
      
    
       
    
      <
    
      div
    
      >
    
      
 
    
      <%
    
      for
    
       (
    
      int
    
       i 
    
      =
    
       
    
      0
    
      ; i 
    
      <
    
       dtTitle.Rows.Count; i
    
      ++
    
      )
 { 
    
      %>
    
      
 
    
      <
    
      div style
    
      =
    
      "
    
      float:left;
    
      "
    
      >
    
      
 
    
      <
    
      a href
    
      =
    
      "
    
      Default2.aspx?id=<%Response.Write(dtTitle.Rows[i][
    
      "
    
      ID
    
      "
    
      ].ToString()); %>
    
      "
    
      >
    
      
 
    
      <%
    
      Response.Write(dtTitle.Rows[i][
    
      "
    
      title
    
      "
    
      ].ToString()); 
    
      %>
    
      
 
    
      </
    
      a
    
      ></
    
      div
    
      >
    
      
 
    
      <%
    
      } 
    
      %>
    
      
 
    
      </
    
      div
    
      >
   
     

 

 

后台代码：

 

代码

   
     

    
      
    
      public
    
       
    
      partial
    
       
    
      class
    
       _Default : System.Web.UI.Page 
{
 
    
      public
    
       DataTable dtTitle 
    
      =
    
       
    
      null
    
      ;
 
    
      protected
    
       
    
      void
    
       Page_Load(
    
      object
    
       sender, EventArgs e)
 {
 getData();
 }
 
    
      protected
    
       
    
      void
    
       getData()
 {
 
    
      string
    
       sql 
    
      =
    
       
    
      "
    
      select top 5 * from viewTitle where isview=1
    
      "
    
      ;
 DataSet dsTitle 
    
      =
    
       DbHelperOleDb.Query(sql);
 dtTitle 
    
      =
    
       dsTitle.Tables[
    
      0
    
      ];
 }
}
   
     

注意：public DataTable dtTitle = null;

datatable要是全局的。不然前台读不到datatable。

 

方法二(拼接字符串)：

前台代码：用<%=str%>绑定后台变量;

 

  
    

   
     
   
     <
   
     li
   
     >
   
     
 
   
     <
   
     a href
   
     =
   
     "
   
     #
   
     "
   
     >
   
     新闻资讯
   
     </
   
     a
   
     >
   
     
 
   
     <
   
     ul style
   
     =
   
     "
   
     width:183px; display: inline; margin-left: 25px; font-size: 14px; font-weight: bold;
   
     "
   
     >
   
     
 
   
     <%=
   
     str
   
     %>
   
     
 
   
     </
   
     ul
   
     >
   
     

 
   
     </
   
     li
   
     >
   
      
  
    

 

后台代码：

 

 

代码

   
     

    
      
    
      public
    
       StringBuilder str 
    
      =
    
       
    
      new
    
       StringBuilder();
    
      //
    
      注意这里要public
    
      

    
       
    
      protected
    
       
    
      void
    
       Page_Load(
    
      object
    
       sender, EventArgs e)
 {
 
    
      string
    
       SQLString 
    
      =
    
       
    
      "
    
      select * from productclass where productid=0
    
      "
    
      ;
 
    
      string
    
       connectionString 
    
      =
    
       ConfigurationManager.ConnectionStrings[
    
      "
    
      ConnectionString
    
      "
    
      ].ToString();
 DataSet ds 
    
      =
    
       
    
      new
    
       DataSet();
 
    
      using
    
       (OleDbConnection connection 
    
      =
    
       
    
      new
    
       OleDbConnection(connectionString))
 {
 
    
      try
    
      
 {
 connection.Open();
 OleDbCommand command 
    
      =
    
       
    
      new
    
       OleDbCommand(SQLString, connection);
 OleDbDataAdapter da 
    
      =
    
       
    
      new
    
       OleDbDataAdapter(command);
 da.Fill(ds, 
    
      "
    
      ds
    
      "
    
      );
 }
 
    
      catch
    
       (System.Data.OleDb.OleDbException ex)
 {
 
    
      throw
    
       
    
      new
    
       Exception(ex.Message);
 }
 }
 DataTable dt 
    
      =
    
       ds.Tables[
    
      0
    
      ];
 
    
      int
    
       count 
    
      =
    
       dt.Rows.Count;
 
    
      for
    
       (
    
      int
    
       i 
    
      =
    
       
    
      0
    
      ; i 
    
      <
    
       count; i
    
      ++
    
      )
 {
 str.Append(
    
      "
    
      <li style=\
    
      "
    
      width: 113px; display: inline;margin
    
      -
    
      top: 15px;\
    
      "
    
      >
    
      "
    
      );
 str.Append(
    
      "
    
      <a title=
    
      "
    
       
    
      +
    
       (dt.Rows[i][
    
      "
    
      productname
    
      "
    
      ]).ToString() 
    
      +
    
       
    
      "
    
       href=\
    
      "
    
      NewsList.aspx
    
      ?
    
      id
    
      =
    
      "
    
       + Convert.ToInt32(dt.Rows[i][
    
      "
    
      id
    
      "
    
      ]) + 
    
      "
    
      \
    
      ""
    
      );
 str.Append(
    
      "
    
       style=\
    
      "
    
      color: #FDFC89\
    
      ""
    
      );
 str.Append(
    
      "
    
      >
    
      "
    
      );
 str.Append(
    
      ""
    
       
    
      +
    
       dt.Rows[i][
    
      "
    
      productname
    
      "
    
      ].ToString() 
    
      +
    
       
    
      ""
    
      );
 str.Append(
    
      "
    
      </a>
    
      "
    
      );
 str.Append(
    
      "
    
      </li>
    
      "
    
      );
 }
 
    
      //
    
      Response.Write(str);
    
      

    
       }