作 為財務數據核算人員，面對大量的業務與財務數據，借助于傳統的EXCEL表格，已經力不從心。最近幾個月，利用周末及下班的空閑時間，寫了一個數據庫導入 導出工具，以方便業務邏輯密集型的數據處理。目前，DataPie支持百萬級別的數據導出，對于幾十萬的數據導入，也輕松應付。源碼及安裝包下載地址：http://datapie.codeplex.com/

先看看界面。

登錄界面：

主界面：

主要代碼：

1.把excel文件讀到DataTable

?? ?????/// <summary>

??????? /// 根據excel路徑和sheet名稱，返回excel的DataTable

??????? /// </summary>

??????? public static DataTable GetExcelDataTable(string path, string tname)

??????? {

??????????? /*Office 2007*/

??????????? string ace = "Microsoft.ACE.OLEDB.12.0";

??????????? /*Office 97 - 2003*/

??????????? string jet = "Microsoft.Jet.OLEDB.4.0";

??????????? string xl2007 = "Excel 12.0 Xml";

??????????? string xl2003 = "Excel 8.0";

??????????? string imex = "IMEX=1";

??????????? /* csv */

??????????? string text = "text";

??????????? string fmt = "FMT=Delimited";

??????????? string hdr = "Yes";

??????????? string conn = "Provider={0};Data Source={1};Extended Properties=\"{2};HDR={3};{4}\";";

??????????? string select = string.Format("SELECT * FROM [{0}$]", tname);

??????????? //string select = sql;

??????????? string ext = Path.GetExtension(path);

??????????? OleDbDataAdapter oda;

?? ?????????DataTable dt = new DataTable("data");

??????????? switch (ext.ToLower())

??????????? {

??????????????? case ".xlsx":

??????????????????? conn = String.Format(conn, ace, Path.GetFullPath(path), xl2007, hdr, imex);

??????????????????? break;

??????????????? case ".xls":

??????????????????? conn = String.Format(conn, jet, Path.GetFullPath(path), xl2003, hdr, imex);

??????????????????? break;

??????????????? case ".csv":

??????????????????? conn = String.Format(conn, jet, Path.GetDirectoryName(path), text, hdr, fmt);

??????????????????? //sheet = Path.GetFileName(path);

??????????????????? break;

??????????????? default:

??????????????????? throw new Exception("File Not Supported!");

??????????? }

??????????? OleDbConnection con = new OleDbConnection(conn);

??????????? con.Open();

??????????? //select = string.Format(select, sql);

??????????? oda = new OleDbDataAdapter(select, con);

??????????? oda.Fill(dt);

??????????? con.Close();

??????????? return dt;

??????? }

2.批量把數據導入到數據庫

1)SQL SERVER版本

??? public bool SqlBulkCopyImport(IList<string> maplist, string TableName, DataTable dt)

??????? {

??????????? using (SqlConnection connection = new SqlConnection(connectionString))

??????????? {

??????????????? connection.Open();

??????????????? using (SqlBulkCopy bulkCopy = new SqlBulkCopy(connection))

??????????????? {

??????????????????? bulkCopy.DestinationTableName = TableName;

??????????????????? foreach (string a in maplist)

??????????????????? {

??????????????????????? bulkCopy.ColumnMappings.Add(a, a);

???????? ???????????}

??????????????????? try

??????????????????? {

??????????????????????? bulkCopy.WriteToServer(dt);

??????????????????????? return true;

??????????????????? }

??????????????????? catch (Exception e)

??????????????????? {

??????????????????????? throw e;

??????????????????? }

??????????????? }

??????????? }

??????? }

2)oracle版本?

public bool SqlBulkCopyImport(IList<string> maplist, string TableName, DataTable dt)

??????? {

??????????? using (OracleConnection connection = new OracleConnection(connectionString))

??????????? {

??????????????? connection.Open();

??????????????? using (OracleBulkCopy bulkCopy = new OracleBulkCopy(connection))

??????????????? {

??????????????????? bulkCopy.DestinationTableName = TableName;

??????????????????? foreach (string a in maplist)

??????????????????? {

??????????????????????? bulkCopy.ColumnMappings.Add(a, a);

??????????????????? }

??????????????????? try

??????????????????? {

?????? ?????????????????bulkCopy.WriteToServer(dt);

??????????????????????? return true;

??????????????????? }

??????????????????? catch (Exception e)

??????????????????? {

??????????????????????? throw e;

??????????????????? }

??????????????? }

? ??????????}

??????? }

3)ACCESS版本

public bool SqlBulkCopyImport(IList<string> maplist, string TableName, DataTable dt)

??????? {

??????????? try

??????????? {

??????????????? using (OleDbConnection connection = new OleDbConnection(connectionString))

??????????????? {

??????????????????? connection.Open();

??????????????????? OleDbDataAdapter adapter = new OleDbDataAdapter("select * from " + TableName + "? where 1=0", connection);

??????????????????? OleDbCommandBuilder builder = new OleDbCommandBuilder(adapter);

??????????????????? int rowcount = dt.Rows.Count;

??????????????????? for (int n = 0; n < rowcount; n++)

??????????????????? {

??????????????????????? dt.Rows[n].SetAdded();

??????????????????? }

??????????????????? //adapter.UpdateBatchSize = 1000;

??????????????????? adapter.Update(dt);

??????????????? }

??????????????? return true;

??????????? }

??????????? catch (Exception e)

??????????? {

??????????????? throw e;

??????????? }

??????? }

3．導出EXCEL文件

/// <summary>

??????? /// 保存excel文件，覆蓋相同文件名的文件

??????? /// </summary>

??????? public static bool SaveExcel(string SheetName, DataTable dt, ExcelPackage package)

??????? {

??????????? try

??????????? {??????????????

??????????????? ExcelWorksheet ws = package.Workbook.Worksheets.Add(SheetName);

??????????????? ws.Cells["A1"].LoadFromDataTable(dt, true);

??????????????? return true;

??????????? }

??????????? catch (Exception ex)

??????????? {

??????????????? throw ex;

??????????? }

??????? }

??????? /// <summary>

??????? /// 多個表格導出到一個excel工作簿

??????? /// </summary>

??????? public static void export(IList<string> SheetNames, string filename, DBConfig db, IList<string> sqls)

??????? {

??????????? DataTable dt = new DataTable();

??????????? FileInfo newFile = new FileInfo(filename);

??????????? if (newFile.Exists)

??????????? {

??????????????? newFile.Delete();

??????????????? newFile = new FileInfo(filename);

??????????? }

??????????? using (ExcelPackage package = new ExcelPackage(newFile))

??????????? {

??????????????? for (int i = 0; i < sqls.Count; i++)

??????????????? {

??????????????????? dt = db.DB.ReturnDataTable(sqls[i]);

??????????????????? SaveExcel(SheetNames[i], dt, package);

??????????????? }

??????????????? package.Save();

??????????? }

???? ???}

??????? /// <summary>

??????? /// 單個表格導出到一個excel工作簿

??????? /// </summary>

??????? public static void export(string SheetName, string filename, DBConfig db, string sql)

??????? {

??????????? DataTable dt = new DataTable();

??????????? FileInfo newFile = new FileInfo(filename);

??????????? if (newFile.Exists)

??????????? {

??????????????? newFile.Delete();

??????????????? newFile = new FileInfo(filename);

??????????? }

??????????? using (ExcelPackage package = new ExcelPackage(newFile))

??????? ????{

??????????????? dt = db.DB.ReturnDataTable(sql);

??????????????? SaveExcel(SheetName, dt, package);

??????????????? package.Save();

??????????? }

??????? }

??????? /// <summary>

??????? /// 單個表導出到多個excel工作簿(分頁)

??????? /// </summary>

??????? public static void export(string SheetName, string filename, DBConfig db, string sql, int num, int pagesize)

??????? {

??????????? DataTable dt = new DataTable();

??????????? FileInfo newFile = new FileInfo(filename);

??????????? int numtb = num / pagesize + 1;

??????????? for (int i = 1; i <= numtb; i++)

??????????? {

??????????????? string s = filename.Substring(0, filename.LastIndexOf("."));

??????????????? StringBuilder newfileName = new StringBuilder(s);

??????????????? newfileName.Append(i + ".xlsx");

???? ???????????newFile = new FileInfo(newfileName.ToString());

??????????????? if (newFile.Exists)

??????????????? {

??????????????????? newFile.Delete();

??????????????????? newFile = new FileInfo(newfileName.ToString());

??????????????? }

??????????????? using (ExcelPackage package = new ExcelPackage(newFile))

??????????????? {

??????????????????? dt = db.DB.ReturnDataTable(sql, pagesize * (i - 1), pagesize);

??????????????????? SaveExcel(SheetName, dt, package);

??????????????????? package.Save();

????????? ??????}

??????????? }

??????? }

4.DataPie下載地址

http://datapie.codeplex.com/releases/view/88081

總結

以上是生活随笔為你收集整理的C#开发的高性能EXCEL导入、导出工具DataPie（支持MSSQL、ORACLE、ACCESS，附源码下载地址）...的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。