Question

怎么用c#控件查询access数据库添加删除

Answer 1

我使用了控件datagridview，访问sqlite数据库，实现增删改与数据库同步。代码如下：
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 System.Data.SQLite;

namespace CplusData
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
       static SQLiteConnection conn = new SQLiteConnection(@"Data Source=F:\Project\Data\test;Version=3;");
       SQLiteCommand cmd = new SQLiteCommand("select * from usertab", conn);
        SQLiteDataAdapter sda = new SQLiteDataAdapter(); 
        DataSet ds=new DataSet();
        private void Form1_Load(object sender, EventArgs e)
        {
            conn.Open(); 
            sda.SelectCommand = cmd;
            sda.Fill(ds,"usertab");
            this.dataGridView1.DataSource = ds;
           this.dataGridView1.DataMember = "usertab";
           conn.Close();

        }
        private void button1_Click(object sender, System.EventArgs e)
        {
            SQLiteCommandBuilder scb = new SQLiteCommandBuilder(sda);
            scb.GetUpdateCommand();
            sda.Update(ds,"usertab");
        }

    }
}