gridview的数据绑定与datalist不一样？
为何同一个dbread，绑定一个datalist，一个gridview，datalist就有数据，gridview就是空的呢？

Protected Sub Page_Load1(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        Dim conn As SqlConnection
        Dim dbstring
        dbstring = System.Configuration.ConfigurationManager.ConnectionStrings("connstr").ToString

        conn = New SqlConnection(dbstring)
        conn.Open()

        Dim comm As SqlCommand
        Dim sql As String
        Dim dbread As SqlDataReader
        sql = "select * from [table]"
        comm = New SqlCommand(sql, conn)
        dbread = comm.ExecuteReader()

        dl1.DataSource = dbread
        dl1.DataBind()

        gv1.DataSource = dbread
        gv1.DataBind()

    End Sub

dl1是一个datalist，gv1是一个gridview，前台能显示出datalist的内容，gridview就显示不出来。 gridview asp.net vb
[解决办法]
绑定datatable，不要绑定datareader