在C#中如何实现用代码将excel导入到sql数据库中
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发布时间：2022-04-09 22:17
共5个回答
懂视网
时间：2022-04-10 02:39
前台相关：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title>上传数据</title>
<script src="../../../res/js/jquery.js" type="text/javascript"></script>
<script type="text/javascript">
$(document).ready(function () {
//上传按钮对文件格式进行判断
$(‘#Button_up‘).click(function () {
var filename = $(‘#FileUpload1‘).val();
if (filename == ‘‘) {
alert(‘请上传文件‘);
return false;
}
else {
var exec = (/[.]/.exec(filename)) ? /[^.]+$/.exec(filename.toLowerCase()) : ‘‘;
if (!(exec == "xlsx" || exec == "xls")) {
alert(‘文件格式不正确，请上传excel文件！‘);
return false;
}
}
return true;
});
});
</script>
</head>
<body>
<form id="form1" runat="server">
<div style="height:50px;line-height:50px;text-align:center;">
<asp:FileUpload ID="FileUpload1" runat="server" Height="25px"/>
<asp:Button ID="Button_up" runat="server" Text="上 传" OnClick="ButtonUpClick" Height="25px" />
</div>
</form>
</body>
</html>
后台
using System.Data;
using System.IO;
using NPOI.SS.UserModel;
using NPOI.XSSF.UserModel;
using NPOI.HSSF.UserModel;
using System.Data.SqlClient;
using Maticsoft.DBUtility;
/// <summary>
/// 将EXCEL文件上传到服务器，并插入数据库
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void ButtonUpClick(object sender, EventArgs e)
{
int id = ConvertHelper.Cint0(hidId.Text);
if (id == 0)
{
try
{
#region 后台对文件格式进行校验
var filename = this.FileUpload1.FileName;
if (string.IsNullOrEmpty(filename))
{
FineUI.Alert.ShowInParent("请选择上传的文件！", FineUI.MessageBoxIcon.Warning);
return;
}
if (!(filename.IndexOf(".xls") > 0 || filename.IndexOf(".xlsx") > 0))
{
FineUI.Alert.ShowInParent("文件格式有误，请上传EXCEL文件", FineUI.MessageBoxIcon.Warning);
return;
}
#endregion
//上传路径
string path = Server.MapPath("~/") + "WebManage\BaseTotalWeb\UploadWeb\FileTmp\";
//将文件保存到临时路径下
string timeStamp = System.DateTime.Now.ToString("yyyyMMddHHmmssfff");
string retStr = UpLoadFiles.FileUpload(path, this.FileUpload1, timeStamp);
if (retStr.Equals("上传失败"))
{
FineUI.Alert.ShowInParent("服务忙，请稍后重试", FineUI.MessageBoxIcon.Warning);
return;
}
//获取DataTable
DataTable dt = this.ExcelToDataTable(path + timeStamp + this.FileUpload1.FileName, true);
//删除该临时文件
DirFileHelper.DeleteFile(path + timeStamp + this.FileUpload1.FileName);
if (dt == null)
{
FineUI.Alert.ShowInParent("无法获取文件内容", FineUI.MessageBoxIcon.Error);
return;
}
//上传订单号
DateTime dtime = System.DateTime.Now;
string strno ="up"+ BaseTotalBll.GetInstence().NextCheckCard(dtime);
#region 添加相应的列
//添加一列upOrderNum 并赋值
DataColumn dc = new DataColumn("upOrderNum", typeof(string));
dc.DefaultValue = strno;
dt.Columns.Add(dc);
//添加upMan 上传人
DataColumn dcUpMan = new DataColumn("upMan", typeof(string));
dcUpMan.DefaultValue = OnlineUsersBll.GetInstence().GetOnlineUsersModel().Manager_LoginName;//获取系统当前用户名
dt.Columns.Add(dcUpMan);
//添加isOk 是否使用
DataColumn dcisOk = new DataColumn("isOk", typeof(int));
dcisOk.DefaultValue =0;
dt.Columns.Add(dcisOk);
//添加cardType 卡类型 0 为设定 1 1年卡 2、2年卡 3、3年卡
DataColumn dccardType = new DataColumn("cardType", typeof(int));
dccardType.DefaultValue = 0;
dt.Columns.Add(dccardType);
//添加isBegin是否激活
DataColumn dcisBegin = new DataColumn("isBegin", typeof(int));
dcisBegin.DefaultValue = 0;
dt.Columns.Add(dcisBegin);
//添加isDown 是否导出
DataColumn dcisDown = new DataColumn("isDown", typeof(int));
dcisDown.DefaultValue = 0;
dt.Columns.Add(dcisDown);
//添加isDel 是否删除
DataColumn dcisDel = new DataColumn("isDel",typeof(int));
dcisDel.DefaultValue = 0;
dt.Columns.Add(dcisDel);
//添加上传人createMan
DataColumn dccreateMan = new DataColumn("createMan",typeof(string));
dccreateMan.DefaultValue = OnlineUsersBll.GetInstence().GetOnlineUsersModel().Manager_LoginName;
dt.Columns.Add(dccreateMan);
#endregion
SqlTransaction tran = null;
using (SqlConnection conn = new SqlConnection(DbHelperSQL.connectionString))
{
conn.Open();//打开链接
using (tran = conn.BeginTransaction())
{
using (SqlBulkCopy copy = new SqlBulkCopy(conn, SqlBulkCopyOptions.KeepIdentity, tran))
{
copy.BulkCopyTimeout = 60;
copy.BatchSize = dt.Rows.Count;
copy.DestinationTableName = "SLWIFI.dbo.[T_Base_CardList]";
copy.ColumnMappings.Add("upOrderNum", "upOrderNum");
copy.ColumnMappings.Add("ICCID号", "cardCTCC");
copy.ColumnMappings.Add("接入号码", "cardAccess");
copy.ColumnMappings.Add("upMan", "upMan");
copy.ColumnMappings.Add("isOk", "isOk");
copy.ColumnMappings.Add("cardType", "cardType");
copy.ColumnMappings.Add("isBegin", "isBegin");
copy.ColumnMappings.Add("isDown", "isDown");
copy.ColumnMappings.Add("isDel", "isDel");
copy.ColumnMappings.Add("createMan", "createMan");
copy.WriteToServer(dt);
tran.Commit();
copy.Close();
}
}
conn.Close();
}
}
catch (Exception ex)
{
string str = ex.ToString();
FineUI.Alert.ShowInParent("上传失败", FineUI.MessageBoxIcon.Error);
return;
}
FineUI.Alert.ShowInParent("上传成功", FineUI.MessageBoxIcon.Information);
return;
}
}
/// <summary>
/// 将excel导入到datatable
/// </summary>
/// <param name="filePath">excel路径</param>
/// <param name="isColumnName">第一行是否是列名</param>
/// <returns>返回datatable</returns>
public DataTable ExcelToDataTable(string filePath, bool isColumnName)
{
DataTable dataTable = null;
FileStream fs = null;
DataColumn column = null;
DataRow dataRow = null;
IWorkbook workbook = null;
ISheet sheet = null;
IRow row = null;
ICell cell = null;
int startRow = 0;
try
{
using (fs = File.OpenRead(filePath))
{
// 2007版本
if (filePath.IndexOf(".xlsx") > 0)
workbook = new XSSFWorkbook(fs);
// 2003版本
else if (filePath.IndexOf(".xls") > 0)
workbook = new HSSFWorkbook(fs);
if (workbook != null)
{
sheet = workbook.GetSheetAt(0);//读取第一个sheet，当然也可以循环读取每个sheet
dataTable = new DataTable();
if (sheet != null)
{
int rowCount = sheet.LastRowNum;//总行数
if (rowCount > 0)
{
IRow firstRow = sheet.GetRow(0);//第一行
int cellCount = firstRow.LastCellNum;//列数
//构建datatable的列
if (isColumnName)
{
startRow = 1;//如果第一行是列名，则从第二行开始读取
for (int i = firstRow.FirstCellNum; i < cellCount; ++i)
{
cell = firstRow.GetCell(i);
if (cell != null)
{
if (cell.StringCellValue != null)
{
column = new DataColumn(cell.StringCellValue);
dataTable.Columns.Add(column);
}
}
}
}
else
{
for (int i = firstRow.FirstCellNum; i < cellCount; ++i)
{
column = new DataColumn("column" + (i + 1));
dataTable.Columns.Add(column);
}
}
//填充行
for (int i = startRow; i <= rowCount; ++i)
{
row = sheet.GetRow(i);
if (row == null) continue;
dataRow = dataTable.NewRow();
for (int j = row.FirstCellNum; j < cellCount; ++j)
{
cell = row.GetCell(j);
if (cell == null)
{
dataRow[j] = "";
}
else
{
//CellType(Unknown = -1,Numeric = 0,String = 1,Formula = 2,Blank = 3,Boolean = 4,Error = 5,)
switch (cell.CellType)
{
case CellType.Blank:
dataRow[j] = "";
break;
case CellType.Numeric:
short format = cell.CellStyle.DataFormat;
//对时间格式（2015.12.5、2015/12/5、2015-12-5等）的处理
if (format == 14 || format == 31 || format == 57 || format == 58)
dataRow[j] = cell.DateCellValue;
else
dataRow[j] = cell.NumericCellValue;
break;
case CellType.String:
dataRow[j] = cell.StringCellValue;
break;
}
}
}
dataTable.Rows.Add(dataRow);
}
}
}
}
}
return dataTable;
}
catch (Exception)
{
if (fs != null)
{
fs.Close();
}
return null;
}
}
用NOPI将上传的EXCEL，转换得到DataTable，用SqlBulkCopy将数据写入数据库表中,配置添加默认列及值，对应数据库字段写入数据
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热心网友
时间：2022-04-09 23:47
2.按照向导 选择数据源 [micrsoft excel 97-2000] 选择要导入的文件
3.接下来的向导选择要导入到的数据库，该导入支持新建表，和表数据追加都可以，按照向导步骤操作就可以啦！
热心网友
时间：2022-04-10 01:05
/// 从Excel读取数据
/// </summary>
/// <param name="filePath">路径</param>
/// <returns>DataSet</returns>
public DataSet ImportFromExcel(string filePath)
{
DataSet ds = new DataSet();
string connString = "Provider = Microsoft.Jet.OLEDB.4.0 ; Data Source = " + filePath + ";Extended Properties=\"Excel 8.0;HDR=Yes;IMEX=1\"";
DataTable table = OleDbHelper.GetExcelTables(connString);
if(table == null || table.Rows.Count <= 0)
{
return null;
}
foreach(DataRow dr in table.Rows)
{
string cmdText = "select * from [" + dr["TABLE_NAME"].ToString() + "]";
DataTable dt = OleDbHelper.FillDataTable(connString, cmdText);
dt.TableName = dr["TABLE_NAME"].ToString();
ds.Tables.Add(dt);
}
return ds;
}
接下来只要把DataSet写入数据库
热心网友
时间：2022-04-10 02:39
using System.Data.SqlClient;
using System.Data.Common;//use for converting excel file to SQL table by OleDb
using System.Data.OleDb;
private void btnConvert_Click(object sender, EventArgs e)
{
//convert Excel to SQL using OLEDB
string path = txtExcel.Text;
string execelConnectionStr = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=book_edited2.xls;Extended Properties=""Excel 8.0;HDR=YES;""";
using (OleDbConnection conn = new OleDbConnection(execelConnectionStr))
{
OleDbCommand cmd = new OleDbCommand("select Typlabel, Proct,ProdIndex FROM [Sheet1$]", conn);
conn.Open();
using (DbDataReader dr = cmd.ExecuteReader())
{
// SQL Server Connection String
string sqlConnectionString = "Data Source=yy;Initial Catalog=wincorhighpot ;Integrated Security=True";
// Bulk Copy to SQL Server
using (SqlBulkCopy bulkCopy = new SqlBulkCopy(sqlConnectionString))
{
bulkCopy.DestinationTableName = "ModelTable";
bulkCopy.WriteToServer(dr);
}
}
}
MessageBox.Show("Update ModelTable Completed.");
}
热心网友
时间：2022-04-10 04:31
