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  • WinForm Read Excel

    using System;
    using System.Collections.Generic;
    using System.ComponentModel;
    using System.Data;
    using System.Drawing;
    using System.Linq;
    using System.Text;
    using System.Windows.Forms;
    using System.Data;
    using System.Data.SqlClient;
    using Excel = Microsoft.Office.Interop.Excel;
    using System.Data.OleDb;
    
    
    namespace ReadExcel
    {
        public partial class Form1 : Form
        {
            public Form1()
            {
                InitializeComponent();
            }
    
            private void BtnShowDialog_Click(object sender, EventArgs e)
            {
                if (openFileDialog1.ShowDialog() == DialogResult.OK)
                {
                    using (SqlConnection sqlCon = new SqlConnection(""))
                    {
                        sqlCon.Open();
                        string fileName = openFileDialog1.FileName;
    
                        DataTable dt = ExcelToDataSet(fileName);
                        int numSucc = 0;
                        if (dt.Rows.Count > 0)
                        {
                            for (int i = 0; i < dt.Rows.Count; i++)
                            {
                                string strID = dt.Rows[i][0].ToString().Trim();
                                string strName = dt.Rows[i][1].ToString().Trim();
                                string strNum = dt.Rows[i][2].ToString().Trim();
                                string strUnit = dt.Rows[i][3].ToString().Trim();
                                string Price = dt.Rows[i][4].ToString().Trim();
    
                                string str = "";
                                SqlCommand sqlCmd = new SqlCommand(str, sqlCon);
                                numSucc += sqlCmd.ExecuteNonQuery();
                            }
                        }
                        MessageBox.Show("成功導入" + numSucc + "");
                    }
                }
            }
    
            public static DataTable ExcelToDataSet(string filename)
            {
                try
                {
                    //string strCon = " Provider = Microsoft.Jet.OLEDB.4.0 ; Data Source = " + filename + ";Extended Properties=Excel 8.0";
                    string strCon = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + filename + ";Extended Properties='Excel 8.0;HDR=NO;IMEX=1';";   // Office 07及以上版本 不能出现多余的空格 而且分号注意
                    OleDbConnection conn = new OleDbConnection(strCon);
                    conn.Open();
                    //返回Excel的架构,包括各个sheet表的名称,类型,创建时间和修改时间等 
                    DataTable dtSheetName = conn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, new object[] { null, null, null, "Table" });
                    //包含excel中表名的字符串数组
                    string[] strTableNames = new string[dtSheetName.Rows.Count];
                    for (int k = 0; k < dtSheetName.Rows.Count; k++)
                    {
                        strTableNames[k] = dtSheetName.Rows[k]["TABLE_NAME"].ToString();
                    }
                    OleDbDataAdapter myCommand = null;
                    DataTable dt = new DataTable();
                    //从指定的表明查询数据,可先把所有表明列出来供用户选择
                    string strExcel = "select * from [" + strTableNames[0] + "]";
                    myCommand = new OleDbDataAdapter(strExcel, strCon);
                    myCommand.Fill(dt);
    
                    return dt;
                }
                catch (Exception ex)
                {
                    Console.WriteLine(ex.ToString());
                    return null;
                }
            }
        }
    }
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  • 原文地址:https://www.cnblogs.com/siri/p/2861069.html
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