vb如何读取excel单元格数据?

那位高手解决如下问题？
我已能在VB中导入excel文件，但不知用什么语句读取excel工作表１中的单元数据。
原语句如下：
Private Sub Command1_Click()
Dim i As Long

        Dim dddd As String

        Dim xlApp As Excel.Application

        Dim xlBook As Excel.Workbook

        dddd = "sheet1" '准备打开指定的表

         Set xlApp = New Excel.Application

        Set xlBook = xlApp.Workbooks.Open("F:\6.文档文件夹\试验1.xls")

         

        For i = 1 To xlBook.Worksheets.Count

            If InStr(LCase(xlBook.Worksheets(i).Name), LCase(dddd)) > 0 Then

               xlBook.Sheets(dddd).Select '打开book1中指定的sheet1表

                 xlApp.Visible = True

               Exit For

            End If
            

        Next i
      
   Dim mData(1, 1) As String
            
           mData(1, 1) = xlSheet.Cells(1, 1)         “这里提示错误”
            
            Form1.Print mData(1, 1)

End Sub
谢谢