Question

我正在尝试将Excel数据导入SQL Server。以下代码适合我。

但我的问题是它重复了特定列名的数据行。我们称之为列名'1'，在我的存储过程中，我添加了一个参数（'01'），它可以过滤掉重复项，即使它不是一个唯一的键列，但它是一个主键不应该完全重复。

我不知道如何使用在C＃中插入select语句的参数（'01'）执行我的存储过程...所以我要做的是，只是添加一个'If语句'比较表'tblname'中的Excel ......这可能吗？

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 System.IO;
using Excel;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;

namespace RASImportExcelToSql
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            OpenFileDialog ope = new OpenFileDialog();
            ope.Filter = "Excel Files|*.xls;*.xlsx;*.xlsm";

            if(ope.ShowDialog() == DialogResult.Cancel)
                return;

            FileStream stream = new FileStream(ope.FileName,FileMode.Open);
            IExcelDataReader excelReader =  ExcelReaderFactory.CreateOpenXmlReader(stream);
            DataSet result = excelReader.AsDataSet();

            DataClasses1DataContext conn = new DataClasses1DataContext();

            foreach (DataTable table in result.Tables)
            {
                foreach (DataRow dr in table.Rows)
                {
                    tblname addtable = new tblname()
                    {       
                        1 = Convert.ToString(dr[1]),
                        2 = Convert.ToString(dr[2]),
                        3 = Convert.ToString(dr[3]),
                        4 = Convert.ToDateTime(dr[4]),
                        5 = Convert.ToDecimal(dr[5]),
                        6 = Convert.ToString(dr[6]),
                        7 = Convert.ToString(dr[7]),
                        8 = Convert.ToString(dr[8]),
                        9 = Convert.ToString(dr[9]),
                       10 = Convert.ToDateTime(dr[10]),
                       11 = Convert.ToString(dr[11]),
                       12 = Convert.ToBoolean(dr[12])
                    };

                    conn.tblname.InsertOnSubmit(addtable);
                }
            }

            conn.SubmitChanges();

            excelReader.Close();
            stream.Close();

            MessageBox.Show("Try");
        }
    }
}

这就是我要做的......

foreach (DataTable table in result.Tables)
{
    foreach (DataRow dr in table.Rows)
    {
        if((1 = Convert.ToString(dr[1)) <> tblname.1)
        {
            tblname addtable = new tblname()
                    {       
                        1 = Convert.ToString(dr[1]),
                        2 = Convert.ToString(dr[2]),
                        3 = Convert.ToString(dr[3]),
                        4 = Convert.ToDateTime(dr[4]),
                        5 = Convert.ToDecimal(dr[5]),
                        6 = Convert.ToString(dr[6]),
                        7 = Convert.ToString(dr[7]),
                        8 = Convert.ToString(dr[8]),
                        9 = Convert.ToString(dr[9]),
                       10 = Convert.ToDateTime(dr[10]),
                       11 = Convert.ToString(dr[11]),
                       12 = Convert.ToBoolean(dr[12])
                    };

            conn.tblname.InsertOnSubmit(addtable);
        }
        else 
        {  
            MessageBox.Show('None'); 
        }
    }

    conn.SubmitChanges();

    excelReader.Close();
    stream.Close();

    MessageBox.Show("Try");
}

这可能吗？如果没有，我应该尝试其他什么方法？与此类似的示例代码或链接非常有用。

将Excel数据导入SQL Server然后阻止从一列

0 个答案: