需要讀取excel表C＃並導入到mySQL只有3列

Question

我想讀取Excel表格中的3列並將它們導入到mySQL數據庫中。我對C＃非常新，需要儘可能詳細的幫助。我使用塊中的MySQL_DB_Management是一個朋友的類，它基本上用來創建我的連接字符串。我到目前爲止的代碼如下：

using System; 
using System.Collections.Generic; 
using System.ComponentModel; 
using System.Data; 
using System.Drawing; 
using System.Linq; 
using System.Text; 
using System.Threading.Tasks; 
using System.Windows.Forms; 
using Excel = Microsoft.Office.Interop.Excel; 
using MySQL_DB_Management; 
using System.Data.SqlClient; 
using System.Data.OleDb; 

namespace Class_Code_Discrepancy 
{ 
    public partial class CC_Disc_Fixer : Form 
    { 
    MySqlDB mysql; 
    SqlConnection sql; 

    public CC_Disc_Fixer() 
    { 
     InitializeComponent(); 
     //create connection strings 
     sql = new SqlConnection(@"server=1.1.1.1;" + @"Trusted_Connection=false;" + @"uid=RO_agent;" + 
           @"password=mypass;" + @"database=Depot;"); 
     mysql = new MySqlDB("1.1.1.1", "platform", "root", "password"); 
    } 

private void Upload_Click(object sender, EventArgs e) 
    {   
     string excelconn = @"Provider=Microsoft.Ace.OLEDB.12.0;" + 
           @"Data Source=c:\Notebook Classcode Master 20121024.xlsx;" + 
           @"Extended Properties=Excel 12.0;HDR=NO;FirstRowHasNames=NO"; 
     OleDbConnection xlconn = new OleDbConnection(excelconn); 

     //DataSet xldataset = new DataSet(); 
     //OleDbDataAdapter xladaptor = new OleDbDataAdapter(); 
     xlconn.Open(); 
     OleDbCommand sel = new OleDbCommand(); 
     sel.Connection = xlconn; 
     DataTable dtsheet = xlconn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null); 
    } 

任何幫助，我需要做的下一個將不勝感激。

Answer 1

嘗試查看ExcelDataReader庫，使用該庫，可以將Excel文件讀取到DataSet中，就像在其頁面上顯示的一樣。

FileStream stream = File.Open(filePath, FileMode.Open, FileAccess.Read); 

//1. Reading from a binary Excel file ('97-2003 format; *.xls) 
IExcelDataReader excelReader = ExcelReaderFactory.CreateBinaryReader(stream); 
//... 
//2. Reading from a OpenXml Excel file (2007 format; *.xlsx) 
IExcelDataReader excelReader = ExcelReaderFactory.CreateOpenXmlReader(stream); 
//... 
//3. DataSet - The result of each spreadsheet will be created in the result.Tables 
DataSet result = excelReader.AsDataSet(); 
//... 
//4. DataSet - Create column names from first row 
excelReader.IsFirstRowAsColumnNames = true; 
DataSet result = excelReader.AsDataSet(); 

然後你就可以用foreach循環遍歷它

foreach (DataTable dt in result.Tables) 
{ 
    foreach (DataRow dr in dt.Rows) 
    { 
     foreach (DataColumn dc in dt.Columns) 
      { 
       // do something 
      } 
    } 
} 

如果你想進入電影只有前三欄，你可以不喜歡它

result.Tables[0].Rows[0][0]; 
result.Tables[0].Rows[0][1]; 
result.Tables[0].Rows[0][2];