Question

我在asp.net中有一个gridview，当我运行以下代码时，我得到3页记录：

  Dim cadenaConexion As String = ConfigurationManager.ConnectionStrings("ConnectionString").ConnectionString
            Dim cn As MySqlConnection = New MySqlConnection(cadenaConexion)
            Dim da As MySqlDataAdapter = New MySqlDataAdapter(strSQL, cn)
            Dim ds As DataSet = New System.Data.DataSet()
            da.Fill(ds)
            GridView1.DataSource = ds
            GridView1.DataBind()

            cn.Close()
            cn.Dispose()

一切运行良好，但是当我页面（按第1页，第2页3）时，gridview数据消失...这是运行的代码：

Protected Sub GridView1_PageIndexChanging(sender As Object, e As GridViewPageEventArgs)    
        GridView1.PageIndex = e.NewPageIndex
        GridView1.DataBind()
        GridView1.SelectedIndex = 0            
    End Sub

显然有些事情是错的，但我看不出是什么。有什么想法吗？

Answer 1

Html标记：

将AllowPaging="True"和PageSize="anyNumber"添加到gridview控件

代码背后：

Protected Sub GridView1_PageIndexChanging(sender As Object, e As GridViewPageEventArgs)
    GridView1.PageIndex = e.NewPageIndex
    bindGridView()
End Sub


Public Sub bindGrid()

    Dim cadenaConexion As String = ConfigurationManager.ConnectionStrings("ConnectionString").ConnectionString
    Dim cn As MySqlConnection = New MySqlConnection(cadenaConexion)
    Dim da As MySqlDataAdapter = New MySqlDataAdapter(strSQL, cn)
    Dim ds As DataSet = New System.Data.DataSet()
    da.Fill(ds)
    GridView1.DataSource = ds
    GridView1.DataBind()

    cn.Close()
    cn.Dispose()

End Sub

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