下面的代码，问题出在Cht.ChartArea.Fill.Visible = True，它是用来显示图表区的填充颜色的。只要把这行去掉，代码运行正常：

Dim App As New MSExcel.Application
Dim Wb As MSExcel.WorkBook = App.WorkBooks.Open("D:\\Report.xls")
Dim Ws As MSExcel.WorkSheet = Wb.WorkSheets(1)
Dim Rg As MSExcel.Range = Ws.Range("A2:C7")
Dim Co As MSExcel.ChartObject = Ws.ChartObjects.Add(100,30,400,250)
Dim Cht As MSExcel.Chart = Co.Chart
Cht.ChartType = MSExcel.XlChartType.xlColumnClustered
Cht.SetSourceData(Rg,MSExcel.XlRowCol.xlColumns)
With Cht.ChartArea.Border
    .Weight = 2
    .LineStyle = -1
End With
Ws.DrawingObjects(1).RoundedCorners = True
Ws.DrawingObjects(1).Shadow = True
\'Cht.ChartArea.Fill.Visible = True
App.Visible = True

如果加上这行代码，就会提示以下错误：

此主题相关图片如下：11.jpg

是不是还要再引用其它文件？