DataGrid的小问题。新手问题大家快来帮忙啊!
cdsun 2006-03-07 03:27:34 private void Page_Load(object sender, System.EventArgs e)
{
if(!this.IsPostBack)
{
try
{
// 在此处放置用户代码以初始化页面
Conn.Open();
//SqlConnection conn=new SqlConnection(ConfigurationSettings.AppSettings["ConnString"]);
//conn.Open();
CMD.CommandText = "select top 10 * from memberinfo order by id desc";
//olecmd selectCommand=new olecmd("select top 10 * from memberinfo order by id desc",Conn);
CMD.Connection = Conn;
dr=CMD.ExecuteReader();
this.AllUser.DataSource=dr;
this.AllUser.DataBind();
Conn.Close();
}
catch(Exception err)
{
string str = err.Message;
//Response.Write(str);
Response.Write("<script>alert('ERROR!!!');</script>");
}
}
}
代码如上
请问为什么我这里不能运行,在CMD.CommandText = "select top 10 * from memberinfo order by id desc";
这里它就说什么“未将对象引用设置到对象的实例。 ”
本人初学,希望大家不吝赐教!!!!
先谢谢了