Excel匯入匯出

using system;

using system.collections.generic;

using system.data;

using system.io;

using system.linq;

using system.text;

using system.web;

using npoi.ss.usermodel;

using npoi.hssf.usermodel;

using npoi.xssf.usermodel;

using system.data.oledb;

namespace bll

else if (fileext == ".xls") else

if (workbook == null)

isheet sheet = string.isnullorempty(workbook.getsheetname(0)) ? workbook.getsheet("sheet1") : workbook.getsheet(workbook.getsheetname(0));

sheet.forceformularecalculation = true;

//資料  

for (int i = 0; i < dt.rows.count; i++)

}//轉為位元組陣列  

///

///

public static void tabletoexcelfile(datatable dt, string filepath, string spath, int count)

else if (fileext == ".xls") else

if (workbook == null)

isheet sheet = string.isnullorempty(workbook.getsheetname(0)) ? workbook.getsheet("sheet1") : workbook.getsheet(workbook.getsheetname(0));

sheet.forceformularecalculation = true;

icellstyle cellstyle = getcellstyle(workbook);

//設定單元格上下左右邊框線  

cellstyle.bordertop = npoi.ss.usermodel.borderstyle.thin;

cellstyle.borderbottom = npoi.ss.usermodel.borderstyle.thin;

cellstyle.borderleft = npoi.ss.usermodel.borderstyle.thin;

cellstyle.borderright = npoi.ss.usermodel.borderstyle.thin;

//資料  

for (int i = 0; i < dt.rows.count; i++)

}//轉為位元組陣列  

workbook.write(stream);

var buf = stream.toarray();

//儲存為excel檔案  

using (filestream fs = new filestream(filepath, filemode.create, fileaccess.write))

}catch (exception ex)

finally

}protected static icellstyle getcellstyle(iworkbook workbook)

///

/// 讀取excel資料

///

///

///

///

public static datatable exceltotable(string filepath, string strsql)

catch (exception ex)

finally

}///

/// 將excel中的資料匯入到datatable中

///

/// 檔名稱

/// 表頭行數

/// 資料總列數

///

public static datatable exceltotable(string filename, int startrow, int cellcount)}}

if (startrow <= 0)

startrow = sheet.firstrownum + 1;

//最後一列的標號

int rowcount = sheet.lastrownum;

for (int i = startrow; i <= rowcount; ++i)

data.rows.add(datarow);}}

return data;

}catch (exception ex)

finally}}

}

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