利用Aspose.Cells实现万能导出功能
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2022-06-25 08:58:08
最近做了个项目,客户对导出excel功能情有独钟,几乎要求每一个列表数据都支持导出excel功能,为了避免代码重复,万能粉嫩的小码农开发了万能导出qaq.
导出exc...
最近做了个项目,客户对导出excel功能情有独钟,几乎要求每一个列表数据都支持导出excel功能,为了避免代码重复,万能粉嫩的小码农开发了万能导出qaq.
导出excel无非就是取出数据,然后利用aspose.cells插件填充到excel文件中,datatable类型的数据是最适合填充excel不过了.唯一的问题就是datatable数据的列头一般是英文,突然就想出了利用sql server每一列的说明来替换掉英文列头的方法,我太tm机智了.
/// <summary> /// 导出 /// </summary> /// <param name="dt">导出的数据表</param> /// <param name="dic">字段名称,字段中文名称</param> /// <param name="title">导出第一行标题</param> /// <returns></returns> public workbook exportdata(datatable table, dictionary<string, string> dic, string title = "") { title = string.isnullorempty(title) ? "导出数据" : title; workbook workbook = new workbook(); workbook.worksheets.removeat(0);//移除第一个sheet var tempstrarray = system.activator.createinstance<t>().gettype().fullname.split('.');// string tablename = tempstrarray[tempstrarray.count() - 1];//这两句是反射生成要操作的表格名称的, var basedic = getcolumnsbytable(tablename, ""); foreach (datacolumn item in table.columns) { string chscolumnname = ""; if (basedic.trygetvalue(item.columnname, out chscolumnname) && !string.isnullorempty(chscolumnname)) item.columnname = chscolumnname; if (dic.trygetvalue(item.columnname, out chscolumnname) && !string.isnullorempty(chscolumnname)) item.columnname = chscolumnname; } int colnum = table.columns.count;//表格列数 int rownum = table.rows.count;//表格行数 worksheet sheet = workbook.worksheets.add(title); cells cells = sheet.cells;//单元格 //为标题设置样式 style styletitle = workbook.styles[workbook.styles.add()];//新增样式 styletitle.horizontalalignment = textalignmenttype.center;//文字居中 styletitle.font.name = "宋体";//文字字体 styletitle.font.size = 18;//文字大小 styletitle.font.isbold = true;//粗体 //样式2 style style2 = workbook.styles[workbook.styles.add()];//新增样式 style2.horizontalalignment = textalignmenttype.center;//文字居中 style2.font.name = "宋体";//文字字体 style2.font.size = 13;//文字大小 style2.font.isbold = true;//粗体 style2.istextwrapped = true;//单元格内容自动换行 style2.borders[bordertype.leftborder].linestyle = cellbordertype.thin; style2.borders[bordertype.rightborder].linestyle = cellbordertype.thin; style2.borders[bordertype.topborder].linestyle = cellbordertype.thin; style2.borders[bordertype.bottomborder].linestyle = cellbordertype.thin; //样式3 style style3 = workbook.styles[workbook.styles.add()];//新增样式 style3.horizontalalignment = textalignmenttype.center;//文字居中 style3.font.name = "宋体";//文字字体 style3.font.size = 12;//文字大小 style3.borders[bordertype.leftborder].linestyle = cellbordertype.thin; style3.borders[bordertype.rightborder].linestyle = cellbordertype.thin; style3.borders[bordertype.topborder].linestyle = cellbordertype.thin; style3.borders[bordertype.bottomborder].linestyle = cellbordertype.thin; //生成行1 标题行 cells.merge(0, 0, 1, colnum);//合并单元格 cells[0, 0].putvalue(title);//填写内容 cells[0, 0].setstyle(styletitle); cells.setrowheight(0, 38); //生成行2 列名行 for (int i = 0; i < colnum; i++) { cells[1, i].putvalue(table.columns[i].columnname); cells[1, i].setstyle(style2); cells.setrowheight(1, 25); cells.setcolumnwidth(i, 30); } //生成数据行 for (int i = 0; i < rownum; i++) { for (int k = 0; k < colnum; k++) { cells[2 + i, k].putvalue(table.rows[i][k].tostring()); if (k == colnum - 1) { style3.horizontalalignment = textalignmenttype.left;//文字居中 } else { style3.horizontalalignment = textalignmenttype.center;//文字居中 } cells[2 + i, k].setstyle(style3); } cells.setrowheight(2 + i, 24); } return workbook; }
/// <summary> /// 获取某个表下面的所有列名和说明 /// </summary> /// <param name="tbname">表名</param> /// <param name="orderrule">排序规则</param> /// <returns></returns> public dictionary<string, string> getcolumnsbytable(string tbname, string orderrule) { stringbuilder sqlsb = new stringbuilder(); sqlsb.append("select distinct columnsname = c.name,description = isnull(ex.value,'') "); sqlsb.append("from sys.columns c left outer join sys.extended_properties ex "); sqlsb.append("on ex.major_id = c.object_id and ex.minor_id = c.column_id and ex.name = 'ms_description' "); sqlsb.append("left outer join systypes t on c.system_type_id=t.xtype "); sqlsb.append("where objectproperty(c.object_id, 'ismsshipped')=0 and "); sqlsb.append("object_name(c.object_id) ='{0}' "); if (!string.isnullorempty(orderrule)) { sqlsb.append("order by columnsname {1}"); } else { sqlsb.append("order by columnsname asc"); } string exsql = string.format(sqlsb.tostring(), tbname, orderrule); datatable dt = db.fromsql(exsql).totable() as datatable;//用了mysoft框架qaq dictionary<string, string> dic = new dictionary<string, string>(); if (dt != null && dt.rows.count > 0) { for (int i = 0; i < dt.rows.count; i++) { dic.add(dt.rows[i][0].tostring(), dt.rows[i][1].tostring()); } } return dic; }
两个搞定了,能实现绝大部分的导出业务。
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持。