页面代码如下：

CellPadding="0" AutoGenerateColumns="False" Height="100%" Width="224px" runat="server">

DataTextField="Title">

后台代码：

SqlConnection con=new SqlConnection (ConfigurationSettings.AppSettings ["strconn"]);

con.Open ();

SqlCommand cmd=new SqlCommand ("select id,Title,datediff(day,sendDate,getdate()) as DayCount from NewInfo",con);

SqlDataAdapter da=new SqlDataAdapter(cmd);

DataSet ds=new DataSet ();

da.Fill (ds);

con.Close ();

myGrid1.DataBind();

//sendDate是一个DateTime类型的字段，是指发布日期