我有一个与 Access 数据库 (accdb) 交互的 C# Windows 窗体项目。我有一个表格可以很好地读取数据库，并将其显示到 DataGridView 中。我有另一个表单，可以将文本框信息提交到数据库中。
我有另一个表单（见下图），它允许用户单击按钮（按钮 1）以使用“openFileDialog”打开 CSV 文件，并在表单上的 dataGridView 中显示所选文件的内容（示例如下所示）。
我的目标：我想要一个按钮（按钮 3），在同一个表单上，将 dataGridView 的显示结果提交到前面提到的 Access 数据库中。
似乎我拥有我需要的所有组件。感觉好像我离得太远了，但我的代码中似乎仍然存在错误和/或缺失。几周以来，我一直在努力实现这一目标。请帮忙！！！
这是表单的屏幕截图和表单的完整代码。非常感谢所有帮助！
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.IO;
using System.Globalization;
using System.Configuration;
using System.Data.OleDb;
namespace csvToGrid
{
public partial class Import : Form
{
public Import()
{
InitializeComponent();
}
public void button1_Click(object sender, EventArgs e)
{
string delimiter = ",";
string tablename = "medTable";
DataSet dataset = new DataSet();
OpenFileDialog openFileDialog1 = new OpenFileDialog();
openFileDialog1.Filter = "CSV Files (*.csv)|*.csv|All Files (*.*)|*.*";
openFileDialog1.FilterIndex = 1;
if (openFileDialog1.ShowDialog() == DialogResult.OK)
{
if (MessageBox.Show("Are you sure you want to import the data from \n " + openFileDialog1.FileName + "?", "Are you sure?", MessageBoxButtons.YesNo) == DialogResult.Yes)
{
filename = openFileDialog1.FileName;
StreamReader sr = new StreamReader(filename);
string csv = File.ReadAllText(openFileDialog1.FileName);
dataset.Tables.Add(tablename);
dataset.Tables[tablename].Columns.Add("Prescription");
dataset.Tables[tablename].Columns.Add("Customer Name");
dataset.Tables[tablename].Columns.Add("Medication");
dataset.Tables[tablename].Columns.Add("Quantity");
dataset.Tables[tablename].Columns.Add("Date Filled");
string allData = sr.ReadToEnd();
string[] rows = allData.Split("\r".ToCharArray());
foreach (string r in rows)
{
string[] items = r.Split(delimiter.ToCharArray());
dataset.Tables[tablename].Rows.Add(items);
}
this.dataGridView1.DataSource = dataset.Tables[0].DefaultView;
MessageBox.Show(filename + " was successfully imported. \n Please review all data before sending it to the database.", "Success!", MessageBoxButtons.OK);
}
else
{
this.Close();
}
}
}
public string filename { get; set; }
private void openFileDialog1_FileOk(object sender, CancelEventArgs e)
{
}
private void Import_Load(object sender, EventArgs e)
{
}
private void button4_Click(object sender, EventArgs e)
{
Application.Exit();
}
private void button2_Click(object sender, EventArgs e)
{
this.Close();
}
private void button3_Click(object sender, EventArgs e)
//remove the semicolon, and add brackets below after line
{
//create the connection string
string connString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\\Search\\Database.accdb";
//create the database query
string query = "SELECT * FROM script_Orders";
//create an OleDbDataAdapter to execute the query
OleDbDataAdapter dAdapter = new OleDbDataAdapter(query, connString);
//create a command builder
OleDbCommandBuilder cBuilder = new OleDbCommandBuilder(dAdapter);
//create a DataTable to hold the query results
DataTable dTable = new DataTable();
//fill the DataTable
dAdapter.Fill(dTable);
//the DataGridView
DataGridView dataGridView1 = new DataGridView();
//BindingSource to sync DataTable and DataGridView
BindingSource bSource = new BindingSource();
//set the BindingSource DataSource
bSource.DataSource = dTable;
//set the DataGridView DataSource
dataGridView1.DataSource = bSource;
// An update function to get the changes back into the database.
dAdapter.Update(dTable);
}
}
}
例子非常受欢迎！