string sql="Select * from Country";
SqlConnection conn = new SqlConnection(connstring);
conn.Open();
DataSet ds = new DataSet();
SqlDataAdapter sqlAdapter = new SqlDataAdapter(sql,conn);
sqlAdapter.Fill(ds,"industryc"); DataView dataview = new DataView();
province.DataSource = ds.Tables[0].DefaultView;
province.DataBind();这段代码怎么不能在protected System.Web.UI.WebControls.DropDownList province;这个控件中显示出来
SqlConnection conn = new SqlConnection(connstring);
conn.Open();
DataSet ds = new DataSet();
SqlDataAdapter sqlAdapter = new SqlDataAdapter(sql,conn);
sqlAdapter.Fill(ds,"industryc"); DataView dataview = new DataView();
province.DataSource = ds.Tables[0].DefaultView;
province.DataBind();这段代码怎么不能在protected System.Web.UI.WebControls.DropDownList province;这个控件中显示出来
province.DataTextField="显示文本的字段名";
province.DataValueField="显示Value的字段名";
province.DataBind();这样看一下
province.DataValueField = "后台值字段";
province.DataTextField = "显示的字段";
province.DataBind();
这句不写也没有关系