winform下如何锁定某单元格？

版主：
使用以下两条语句，为什么不能锁定Cells[1, 1]单元格？
             fpSpread1.ActiveSheet.Protect = true;
             fpSpread1.Sheets[0].Cells[1, 1].Locked = true;

您好，

我使用以下代码，没有能够重现这个问题。

1. fpSpread1.ActiveSheet.Protect = true;
2. fpSpread1.ActiveSheet.LockBackColor = Color.LightCyan;
3. fpSpread1.ActiveSheet.LockForeColor = Color.Green;
4. FarPoint.Win.Spread.Column columnobj;
5. columnobj = fpSpread1.ActiveSheet.Columns[0, 3];
6. columnobj.Locked = true;
7. FarPoint.Win.Spread.Cell cellobj;
8. cellobj = fpSpread1.ActiveSheet.Cells[1,1,1,2];
9. cellobj.Locked = false;
10. fpSpread1.ActiveSheet.Cells[1,0,1,4].Text = "First Five";

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