C# 将文件存入数据库 EF 版

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;

namespace ReportManage
{
public partial class frmMain : Form
{
public frmMain()
{
InitializeComponent();
}

    private void button1_Click(object sender, EventArgs e)
    {
        using (OpenFileDialog dialog = new OpenFileDialog())
        {
            //只能单选一个文件
            dialog.Multiselect = false;
            //选择一个文件
            if (dialog.ShowDialog() == DialogResult.OK)
            {
                try
                {
                    //把选择的文件路径给txtPath
                    this.textBox1.Text = dialog.FileName;
                }