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An item with the same key has already been added.

发布时间 2023-04-18 16:31:58作者: 0Behavior

开发环境：.Net Core 3.1，NPOI 2.6.0

前言：复制行数据时，提示错误如下：

An item with the same key has already been added. Key: 0
   at System.Collections.Generic.Dictionary`2.TryInsert(TKey key, TValue value, InsertionBehavior behavior)
   at System.Collections.Generic.Dictionary`2.Add(TKey key, TValue value)

解决方案：检查被复制的行不可以出现合并单元格。