日期:2014-05-19  浏览次数:20535 次

急求datagrid 分页问题
我想实现datagrid分页功能,但每次点下一页,显示的数据都是一样的,请问各位大侠这是怎么回事。vs2003
这是我的源码:
  Private   Sub   Page_Load(ByVal   sender   As   System.Object,   ByVal   e   As   System.EventArgs)   Handles   MyBase.Load
                If   Not   IsPostBack   Then
                        BindGrid2()
                End   If
  Sub   BindGrid2()
                Dim   cnA   As   New   OleDbConnection
                cnA   =   New   OleDbConnection
                cnA.ConnectionString   =   "Provider=Microsoft.Jet.OLEDB.4.0; "   &   "Data   Source= "   &   Server.MapPath( "data/members.mdb ")
                cnA.Open()
                Dim   mycmd   As   OleDb.OleDbDataAdapter
                Dim   SQLStr2   As   String
                SQLStr2   =   "SELECT   问题6,问题7,问题8,问题9,问题10   FROM   课程调查2 "
                mycmd   =   New   OleDb.OleDbDataAdapter(SQLStr2,   cnA)
                Dim   dt   As   Data.DataSet   =   New   Data.DataSet
                mycmd.Fill(dt)
                DataGrid2.DataSource   =   dt.Tables(0)
                DataGrid2.VirtualItemCount   =   200
                DataGrid2.DataBind()
                cnA.Close()
        End   Sub
Sub   AtPageChanged(ByVal   sender   As   Object,   ByVal   e   As   System.Web.UI.WebControls.DataGridPageChangedEventArgs)   Handles   DataGrid1.PageIndexChanged
                DataGrid2.CurrentPageIndex   =   e.NewPageIndex
                BindGrid2()
        End   Sub

------解决方案--------------------
PageIndexChanged事件是否注册,有时候会丢失
------解决方案--------------------
你没有进行分页,每次都是从数据库里读新的数据,你应该在mycmd.Fill(dt)进行分页处理,如
sqlDataAdapter.Fill(ds, startRecord, maxRecords, srcTable);写上相应的参数就可以啦。
------解决方案--------------------
Sub AtPageChanged(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.DataGridPageChangedEventArgs) Handles DataGrid1.PageIndexChanged
DataGrid2.CurrentPageIndex = e.NewPageIndex
BindGrid2()
End Sub

怀疑这段代码没被运行
------解决方案--------------------
private void InitializeComponent()
{
this.dgCategory.CancelCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.Cancel);//这是我手动加的委托,也就是注册事件
this.dgCategory.EditCommand += new System.Web.UI.WebControls.DataGridCommandEventHandl