导入Excel文件

选择文件

 #region
 //获取路径
 string FilePath = "";
 //选择文件
 OpenFileDialog openFileDialog1 = new OpenFileDialog();
 //获取本地启动路径
 string str = System.Windows.Forms.Application.StartupPath;
 openFileDialog1.InitialDirectory = str + "\\";
 openFileDialog1.Filter = "所有文件(*.*)|*.*";
 openFileDialog1.RestoreDirectory = false;
 if (openFileDialog1.ShowDialog() == DialogResult.OK)
 FilePath = openFileDialog1.FileName;
 //获得文件的扩展名
 string IsXls = System.IO.Path.GetExtension(FilePath).ToString().ToLower();
 if (!FilePath.Equals(""))
 {
 if (IsXls == ".xlsx" || IsXls == ".xls")
 {
 //调用方法
 方法名(FilePath);
 }
 else
 {
 MessageBox.Show("只可以选择Excel格式文件,请重新选择文件!");
 return;
 }
 }
 #endregion

读取excel到datatable

 #region 读取excel到datatable
 public static DataTable ExcelToDataTable(string FilePath)
 {
 DataTable dtExcel = new DataTable();
 try
 {
 if (RCExportExcel.isOfficeInstall("11.0") || RCExportExcel.isOfficeInstall("12.0")
 || RCExportExcel.isOfficeInstall("14.0") || RCExportExcel.isOfficeInstall("15.0"))
 {
 #region 安装Office
 dtExcel = OfficeExcel(FilePath);
 #endregion
 }
 else
 {
 #region 未安装Office
 dtExcel = NpoiExcel(FilePath);
 #endregion
 }
 }
 catch (Exception ex)
 {
 WriteLog(ex.Message + "，错误行号：" + ex.StackTrace);
 MessageBox.Show("Excel文件被占用，请关闭Excel文件再进行导入操作!");
 }
 return dtExcel;
 }
 #endregion

Office读取Excel

 #region Office读取Excel
 /// <param name="excelPath">excel地址</param>
 /// <returns>成功返回datatable，失败返回null</returns>
 public static DataTable OfficeExcel(string excelPath)
 {
 DataTable dtexcel = new DataTable();
 string strConn;
 try
 {
 FileInfo fileInfo = new FileInfo(excelPath);//判断文件是否存在
 if (fileInfo.Exists)
 {
 strConn = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + excelPath + ";Extended Properties='Excel
 12.0;HDR=Yes;IMEX=;'";
 OleDbConnection conn = new OleDbConnection(strConn);
 conn.Open();
 DataTable tbNames = conn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null); //得到所有工作簿名称
 string tbName = tbNames.Rows[]["TABLE_NAME"].ToString();
 OleDbDataAdapter oda = new OleDbDataAdapter("select * from [" + tbName + "]", conn);
 DataSet ds = new DataSet(); //必须要使用DataSet对象
 oda.Fill(ds, "tempExport");
 dtexcel = ds.Tables[];
 conn.Close();
 }
 }
 catch (Exception e)
 {
 WriteLog(e.Message + "，错误行号：" + e.StackTrace);
 MessageBox.Show("Excel文件被占用，请关闭Excel文件再进行导入操作!");
 return dtexcel;
 }
 finally
 {
 //释放资源
 if (dtexcel != null) { dtexcel.Dispose(); }
 }
 return dtexcel;
 }
 #endregion

NPOI 读取Excel

 #region NPOI 读取Excel
 /// <param name="excelPath">excel地址</param>
 /// <returns>成功返回datatable，失败返回null</returns>
 public static DataTable NpoiExcel(string excelPath)
 {
 IWorkbook workbook = null;//全局workbook
 ISheet sheet;//sheet
 DataTable table = null;
 try
 {
 FileInfo fileInfo = new FileInfo(excelPath);//判断文件是否存在
 if (fileInfo.Exists)
 {
 FileStream fileStream = fileInfo.OpenRead();//打开文件，得到文件流
 switch (fileInfo.Extension)
 {
 //xls是03，用HSSFWorkbook打开，.xlsx是07或者10用XSSFWorkbook打开
 case ".xls":
 workbook = new HSSFWorkbook(fileStream); break;
 case ".xlsx":
 workbook = new XSSFWorkbook(fileStream); break;
 default: break;
 }
 fileStream.Close();//关闭文件流
 }
 if (workbook != null)
 {
 sheet = workbook.GetSheetAt();//读取到指定的sheet
 table = new DataTable();//初始化一个table

 IRow headerRow = sheet.GetRow();//获取第一行，一般为表头
 int cellCount = headerRow.LastCellNum;//得到列数

 for (int i = headerRow.FirstCellNum; i < cellCount; i++)
 {
 DataColumn column = new DataColumn(headerRow.GetCell(i).StringCellValue);//初始化table的列
 table.Columns.Add(column);
 }
 //遍历读取cell
 for (int i = (sheet.FirstRowNum + ); i <= sheet.LastRowNum; i++)
 {
 NPOI.SS.UserModel.IRow row = sheet.GetRow(i);//得到一行
 DataRow dataRow = table.NewRow();//新建一个行

 for (int j = row.FirstCellNum; j < cellCount; j++)
 {
 ICell cell = row.GetCell(j);//得到cell
 if (cell == null)//如果cell为null，则赋值为空
 {
 dataRow[j] = "";
 }
 else
 {
 dataRow[j] = row.GetCell(j).ToString();//否则赋值
 }
 }

 table.Rows.Add(dataRow);//把行 加入到table中

 }
 }
 return table;

 }
 catch (Exception e)
 {
 WriteLog(e.Message + "，错误行号：" + e.StackTrace);
 MessageBox.Show("Excel文件被占用，请关闭Excel文件再进行导入操作!");
 return table;
 }
 finally
 {
 //释放资源
 if (table != null) { table.Dispose(); }
 workbook = null;
 sheet = null;
 }
 }
 #endregion

 验证身份证号，得到出生日期，性别

 #region 验证身份证号，得到出生日期，性别
 public static void AuthenticationIdcard(string idcard)
 {
 try
 {
 DateTime birthday = new DateTime();
 string sex = string.Empty;
 bool id = true;
 if (!Regex.IsMatch(idcard, @"^(^\d{15}$|^\d{18}$|^\d{17}(\d|X|x))$", RegexOptions.IgnoreCase))
 {
 id = false;
 }
 if (id)
 {
 if (idcard.Length == )
 {
 birthday = DateTime.Parse(idcard.Substring(, ).Insert(, "-").Insert(, "-"));
 sex = idcard.Substring(, );
 if (int.Parse(sex) %  == )//性别代码为偶数是女性奇数为男性
 sex = "女";
 else
 sex = "男";
 }
 else if (idcard.Length == )
 {
 string a = "";
 birthday = DateTime.Parse(a + idcard.Substring(, ).Insert(, "-").Insert(, "-"));
 string tmp = idcard.Substring(idcard.Length - );
 int sx = int.Parse(tmp);
 int outNum;
 Math.DivRem(sx, , out outNum);
 if (outNum == )
 sex = "女";
 else
 sex = "男";
 DataRow row = dtRightIdcard.NewRow();
 row["身份证号"] = idcard;
 row["出生日期"] = birthday;
 row["性别"] = sex;
 row["nationid"] = "";
 dtRightIdcard.Rows.Add(row);
 }
 else if (idcard.Length == )
 {
 birthday = DateTime.Parse("1950-01-01");
 sex = "";
 DataRow row = dtRightIdcard.NewRow();
 row["身份证号"] = idcard;
 row["出生日期"] = birthday;
 row["性别"] = sex;
 row["nationid"] = "";
 dtRightIdcard.Rows.Add(row);
 }
 }
 catch
 {

 throw;
 }
 }
 #endregion

转载请注明出入来源：https://www.cnblogs.com/famhuai/p/8257279.html