c#将Excel数据导入到数据库的实现代码
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2022-04-25 19:45:48
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c#将Excel数据导入到数据库的实现代码
假如Excel中的数据如下:
数据库建表如下:
其中Id为自增字段:
代码:
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; using System.Data; using System.Data.OleDb; using System.Configuration; using System.Data.SqlClient; namespace InExcelOutExcel { public partial class ExcelToDB : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { FileSvr fileSvr = new FileSvr(); System.Data.DataTable dt = fileSvr.GetExcelDatatable ("C:\\Users\\NewSpring\\Desktop\\Demo\\InExcelOutExcel\\InExcelOutExcel\\excel\\ExcelToDB.xlsx", "mapTable"); fileSvr.InsetData(dt); } } class FileSvr { /// <summary> /// Excel数据导入Datable /// </summary> /// <param name="fileUrl"></param> /// <param name="table"></param> /// <returns></returns> public System.Data.DataTable GetExcelDatatable(string fileUrl, string table) { //office2007之前 仅支持.xls //const string cmdText = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source={0};Extended Properties='Excel 8.0;IMEX=1';"; //支持.xls和.xlsx,即包括office2010等版本的 HDR=Yes代表第一行是标题,不是数据; const string cmdText = "Provider=Microsoft.Ace.OleDb.12.0;Data Source={0};Extended Properties='Excel 12.0; HDR=Yes; IMEX=1'"; System.Data.DataTable dt = null; //建立连接 OleDbConnection conn = new OleDbConnection(string.Format(cmdText, fileUrl)); try { //打开连接 if (conn.State == ConnectionState.Broken || conn.State == ConnectionState.Closed) { conn.Open(); } System.Data.DataTable schemaTable = conn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null); //获取Excel的第一个Sheet名称 string sheetName = schemaTable.Rows[0]["TABLE_NAME"].ToString().Trim(); //查询sheet中的数据 string strSql = "select * from [" + sheetName + "]"; OleDbDataAdapter da = new OleDbDataAdapter(strSql, conn); DataSet ds = new DataSet(); da.Fill(ds, table); dt = ds.Tables[0]; return dt; } catch (Exception exc) { throw exc; } finally { conn.Close(); conn.Dispose(); } } /// <summary> /// 从System.Data.DataTable导入数据到数据库 /// </summary> /// <param name="dt"></param> /// <returns></returns> public int InsetData(System.Data.DataTable dt) { int i = 0; string lng = ""; string lat = ""; string offsetLNG = ""; string offsetLAT = ""; foreach (DataRow dr in dt.Rows) { lng = dr["LNG"].ToString().Trim(); lat = dr["LAT"].ToString().Trim(); offsetLNG = dr["OFFSET_LNG"].ToString().Trim(); offsetLAT = dr["OFFSET_LAT"].ToString().Trim(); //sw = string.IsNullOrEmpty(sw) ? "null" : sw; //kr = string.IsNullOrEmpty(kr) ? "null" : kr; string strSql = string.Format("Insert into DBToExcel (LNG,LAT,OFFSET_LNG,OFFSET_LAT) Values ('{0}','{1}',{2},{3})", lng, lat, offsetLNG, offsetLAT); string strConnection = ConfigurationManager.ConnectionStrings["ConnectionStr"].ToString(); SqlConnection sqlConnection = new SqlConnection(strConnection); try { // SqlConnection sqlConnection = new SqlConnection(strConnection); sqlConnection.Open(); SqlCommand sqlCmd = new SqlCommand(); sqlCmd.CommandText = strSql; sqlCmd.Connection = sqlConnection; SqlDataReader sqlDataReader = sqlCmd.ExecuteReader(); i++; sqlDataReader.Close(); } catch (Exception ex) { throw ex; } finally { sqlConnection.Close(); } //if (opdb.ExcSQL(strSql)) // i++; } return i; } } }
运行结果:
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