About NPOI style units CellStyle problem

problem appear:

When the cell styles (to keep the original style) modified again (to modify certain ranks of the table), a modified style will be applied to the entire table, as follows:

Here only modify the background color of certain circulating cells lines

 

 Or the way the code below:

 

 result:

 

The right way is as follows:

• We need to clone the conventional format to the new style inside
• To modify the style in which the new style
• Finally, the new style assigned to the cell Cell

 

 

result:

 

 

 note:

Each cell styles are created using the new CreateCellStyle (), after cell styles to create a workbook will be placed in a queue to maintain, can only create the 4000 style, than it does not create,

Thus using the same unit for the format, to be cached, repeat use.