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=1;'";
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[0]["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[0];
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(0);//读取到指定的sheet
table = new DataTable();//初始化一个table

IRow headerRow = sheet.GetRow(0);//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 + 1); 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 == 18)
{
birthday = DateTime.Parse(idcard.Substring(6, 8).Insert(6, "-").Insert(4, "-"));
sex = idcard.Substring(14, 3);
if (int.Parse(sex) % 2 == 0)//性别代码为偶数是女性奇数为男性
sex = "女";
else
sex = "男";
}
else if (idcard.Length == 15)
{
string a = "19";
birthday = DateTime.Parse(a + idcard.Substring(6, 6).Insert(4, "-").Insert(2, "-"));
string tmp = idcard.Substring(idcard.Length - 3);
int sx = int.Parse(tmp);
int outNum;
Math.DivRem(sx, 2, out outNum);
if (outNum == 0)
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"] = "01";
dtRightIdcard.Rows.Add(row);
}
else if (idcard.Length == 12)
{
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"] = "01";
dtRightIdcard.Rows.Add(row);
}
}
catch
{

throw;
}
}
#endregion

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