C web 利用NPOI進行生成excel

第一步：引用npoi.dll，命名空間引用

using npoi.hssf.usermodel;

using npoi.ss.usermodel;
using npoi.ss.util;

@1單純的以行匯出的格式datatable，作為引數，得到資料流

/// /// 資料匯出到excel

/// 
/// 資料表集合
/// 輸出流
public static memorystream excelout(listdts)
hssfsheet sheet = (hssfsheet)wb.createsheet(dts[i].tablename);
sheet.defaultcolumnwidth = 15;
sheet.defaultrowheight = 22 * 20;
hssfrow row = (hssfrow)sheet.createrow(0);
hssfcellstyle cellstyle = (hssfcellstyle)wb.createcellstyle();
cellstyle.alignment = horizontalalignment.center;
cellstyle.verticalalignment = verticalalignment.center;
cellstyle.bordertop = borderstyle.medium;
cellstyle.borderright = borderstyle.medium;
cellstyle.borderbottom = borderstyle.medium;
cellstyle.borderleft = borderstyle.medium;
hssffont font = (hssffont)wb.createfont();
font.isbold = true;
cellstyle.setfont(font);
for (int j = 0; j < dts[i].columns.count; j++)
hssfcellstyle cellstyle2 = (hssfcellstyle)wb.createcellstyle();
cellstyle2.verticalalignment = verticalalignment.center;
cellstyle2.bordertop = borderstyle.thin;
cellstyle2.borderright = borderstyle.thin;
cellstyle2.borderbottom = borderstyle.thin;
cellstyle2.borderleft = borderstyle.thin;
for (int k = 0; k < dts[i].rows.count; k++)}}
memorystream ms = new memorystream();
wb.write(ms);
return ms;
}

/// /// 複雜資料匯出到excel

/// 
/// 資料表集合
/// 輸出流
public static memorystream excelout2(listdts)
sheet.defaultcolumnwidth = 15;
sheet.defaultrowheight = 22 * 20;
hssfrow row = (hssfrow)sheet.createrow(0);
hssfcellstyle cellstyle = (hssfcellstyle)wb.createcellstyle();
cellstyle.alignment = horizontalalignment.center;
cellstyle.verticalalignment = verticalalignment.center;
cellstyle.bordertop = borderstyle.medium;
cellstyle.borderright = borderstyle.medium;
cellstyle.borderbottom = borderstyle.medium;
cellstyle.borderleft = borderstyle.medium;
hssffont font = (hssffont)wb.createfont();
font.isbold = true;
cellstyle.setfont(font);
for (int j = 0; j < dts[i].columns.count; j++)
hssfcellstyle cellstyle2 = (hssfcellstyle)wb.createcellstyle();
cellstyle2.verticalalignment = verticalalignment.center;
cellstyle2.bordertop = borderstyle.thin;
cellstyle2.borderright = borderstyle.thin;
cellstyle2.borderbottom = borderstyle.thin;
cellstyle2.borderleft = borderstyle.thin;
for (int k = 0; k < dts[i].rows.count; k++)}}
#endregion
#region 合併行
datatable dt = new datatable();
dt = dts[0];
//合併行
for(int i = 1; i < dt.rows.count + 1; i++)
else if(value==value1 && j == dt.rows.count)
}sheet.addmergedregion(new cellrangeaddress(i, end, 0, 0));
sheet.addmergedregion(new cellrangeaddress(i, end, 1, 1));
i = end;
} 
#endregion 
memorystream ms = new memorystream();
wb.write(ms);
return ms;}}

// 設定編碼和附件格式

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