system.date.sqlitesystem.date.sqlite.linq //導入--Excel導入sqliteprivate void button2_Click(object sender, EventArgs e){  DAL.Sqlite da = new DAL.Sqlite("DataByExcel.db");  if (chk_sfzj.Checked==false)  { //刪除全部數據 if (da.SqlExSQLiteCommand("delete from sqllitebyexcel")) { } else {   MessageBox.Show("刪除原失敗，請聯系管理員！"); }  }  OpenFileDialog ofg = new OpenFileDialog();  ofg.Filter = "*.xls|*.xls";  if (ofg.ShowDialog() == System.Windows.Forms.DialogResult.OK)  { string sName = ofg.FileName; if (new BLL.Excelcs().OutExcel(sName, da)) {   MessageBox.Show("導入成功");   //bdData(""); } else {   MessageBox.Show("導入失敗"); }  }}/// <summary>/// 初始化數據庫/// </summary>/// <param name="strSqlitePath">數據庫文件路徑</param> SQLiteConnection SQLCon;public Sqlite(string dataName){    SQLCon = new SQLiteConnection(string.Format("Data Source={0}{1}", System.AppDomain.CurrentDomain.BaseDirectory, dataName));} /// <summary>/// 執行sql語句/// </summary>/// <param name="strSql">sql語句</param>/// <returns>是否執行成功</returns>public bool SqlExSQLiteCommand(string strSql){  SqlOpen();  SQLiteCommand cmd = new SQLiteCommand();  cmd.Connection = SQLCon;  cmd.CommandText = strSql;  try  { int i = cmd.ExecuteNonQuery(); return true;  }  catch (Exception ex)  { return false;  }}/// <summary>/// 導入數據到數據庫/// </summary>    /// <param name="outFile">文件</param>/// <param name="sql">數據庫操作對象</param>/// <returns></returns>public bool OutExcel(string outFile,DAL.Sqlite sql){  DataTable dt = DAL.Excel.TransferData(outFile, "Sheet1").Tables[0];  try  { foreach (DataRow item in dt.Rows) {   string strSql = @"insert into sqllitebyexcel  (No,BUSINESS_NO,BUSINESS_TYPE_NAME,VESSEL_NAME_C,VOYAGE,BILL_NO,CTNW1,CTNW2,    CTNW3,TXDD,XXDD,CTN_NO,CTN_TYPE,NAME1,NAME2,NAME3,IN_DATE,JFJSSJ,JFSC,DYPCD,TXPCSJ,TXPCSC,JCSJ,TXSC,H986JJYCSJ,YFYXSJ,LXSJ,LXSC,CCJFSJ,TXJCSJ,TXCCSJ,DCTXSC,TimeNow,DDTXSC)    values('{0}','{1}','{2}','{3}','{4}','{5}','{6}','{7}','{8}','{9}','{10}','{11}','{12}','{13}','{14}','{15}','{16}','{17}','{18}','{19}','{20}','{21}','{22}','{23}','{24}','{25}','{26}','{27}','{28}','{29}','{30}','{31}','{32}','{33}')";   string strEnd = string.Format(strSql, item[0], item[1], item[2], item[3], item[4], item[5], item[6], item[7], item[8], item[9], item[10], item[11], item[12], item[13], item[14], item[15], item[16].ToDate(), item[17].ToDate(), item[18], item[19].ToDate(), item[20].ToDate(), item[21], item[22].ToDate(), item[23], item[24].ToDate(), item[25].ToDate(), item[26].ToDate(), item[27], item[28].ToDate(), item[29].ToDate(), item[30].ToDate(), item[31], DateTime.Now.ToDate(), "");   sql.SqlExSQLiteCommand(strEnd); }    return true;  }  catch (Exception ex)  {    // MessBox.Show(""); string aa = ex.Message; return false;  }}public static string ToDate(this object obj){  // if (obj == null || string.IsNullOrEmpty(obj.ToString()))  if(string.IsNullOrEmpty(obj.ToString().Trim()))  { return "null";  }  return ((DateTime)obj).ToString("yyyy-MM-dd HH:mm:ss");}/// <summary>/// 獲取excel表數據/// </summary>/// <param name="excelFile">excel文件路徑</param>/// <param name="sheetName">excel工作表名</param>/// <returns></returns>public static DataSet TransferData(string excelFile, string sheetName){  DataSet ds = new DataSet();  //獲取全部數據    string strConn = "Provider=Microsoft.Jet.OLEDB.4.0;" + "Data Source=" + excelFile + ";" + "Extended Properties=Excel 8.0;";  OleDbConnection conn = new OleDbConnection(strConn);  try  {     conn.Open(); string strExcel = ""; OleDbDataAdapter myCommand = null; strExcel = string.Format("select * from [{0}$]", sheetName); myCommand = new OleDbDataAdapter(strExcel, strConn); myCommand.Fill(ds);  }  catch (Exception ex)  { throw new Exception(ex.Message);  }  finally   { conn.Close();  }  return ds;}