Epplus跨工作本复制格式

　最近在做一个excel合并的功能，使用epplus，当涉及到复制格式时困扰了好久，终于搞好了，记录下。

    ExcelRange cOld = stOld.Cells[r, c];
    ExcelRange cNew = stNew.Cells[irow, c];

    cNew.Value = cOld.Value;
    //1.这样笨笨的挨个属性复制根本不好使
    //cNew.Style.Border = cOld.Style.Border;
    //cNew.Style.Fill = cOld.Style.Fill;
    //cNew.Style.Font = cOld.Style.Font;
    //cNew.Style.Hidden = cOld.Style.Hidden;
    //cNew.Style.HorizontalAlignment = cOld.Style.HorizontalAlignment;
    //cNew.Style.Indent = cOld.Style.Indent;
    //cNew.Style.Locked = cOld.Style.Locked;
    //cNew.Style.Numberformat = cOld.Style.Numberformat;
    //cNew.Style.QuotePrefix = cOld.Style.QuotePrefix;
    //cNew.Style.ShrinkToFit = cOld.Style.ShrinkToFit;
    //cNew.Style.TextRotation = cOld.Style.TextRotation;
    //cNew.Style.VerticalAlignment = cOld.Style.VerticalAlignment;
    //cNew.Style.WrapText = cOld.Style.WrapText;

    //2.在同一个workbook下可以这样做，但是跨表的话，有可能两个表里StyleID值一样，但是其实含义不一样
    //这样就有可能复制失败，如Old中StyleID=1表示红色，但是New中StyleID表示蓝色，那么只复制id，就会
    //把本来是红色的单元格复制成蓝色的
    //cNew.StyleID = cOld.StyleID;

    //3.先克隆旧表中的样式，再把它的StyleID赋给新表，这样就可以了！
    cNew.StyleID = wkNew.Workbook.Styles.CloneStyle(wkOld.Workbook.Styles, cOld.StyleID);