SK000

我建立了一个与外部数据库相连接的程序用到了DataGrid控件和OleDbDataAdapter,OleDbConnection,DataSet
开头的代码如下:
Public Class Form1
    Inherits System.Windows.Forms.Form
    Public findstr As String
    Public Sub UpDataSource(ByVal ChangedRows As DataList1.DataSet1)
        Try
            If (Not (ChangedRows) Is Nothing) Then

                Me.OleDbConnection1.Open()
                Me.OleDbDataAdapter1.Update(ChangedRows)
            End If
        Catch updateException As System.Exception
            Throw updateException
        Finally
            Me.OleDbConnection1.Close()
        End Try

    End Sub
VB居然说DataList1.DataSet1未声明,请教各位高手是怎么回事,望尽快解答!谢谢!