第一步，先建立與資料庫的連線

第二步，在program.cs裡面寫程式

using System;

using System.Collections.Generic;

using System.Configuration;

using System.Data;

using System.Data.SqlClient;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

namespace CaterDal

{

public static class SqliteHelper

{

//從配置文字中讀取連線字串

private static string connStr = "Data Source=資料庫的名稱;Initial Catalog=SWALL;User ID=SA;Password=666";//是這個資料庫沒錯吧？

public static DataTable GetDataTable(string sql,params SqlParameter[] ps)

{

using (SqlConnection conn=new SqlConnection(connStr))

{

//構造介面卡物件

SqlDataAdapter pter=new SqlDataAdapter(sql,conn);

//構造資料表，用於接收查詢結果

DataTable dt=new DataTable();

//新增引數

pter.SelectCommand.Parameters.AddRange(ps);

//執行結果

pter.Fill(dt);

//返回結果集

return dt;

}

}

}

}

第三步，在專案裡面寫程式

private void button4_Click(object sender, EventArgs e)

{

DataTable Dt = SqliteHelper.GetDataTable("select * from jjjj");

dataGridView1.DataSource = Dt;

}

}

}

private void button4_Click(object sender, EventArgs e)

{

DataTable Dt = SqliteHelper.GetDataTable("select * from jjjj");

dataGridView1.DataSource = Dt;

}

}

}

private void button4_Click(object sender, EventArgs e)

{

DataTable Dt = SqliteHelper.GetDataTable("select * from lishiji");

dataGridView1.DataSource = Dt;

}

}

}

Form1.cs專案名

1

private void button4_Click(object sender, EventArgs e)

{

DataTable Dt = SqliteHelper.GetDataTable("select * from jjjj");

dataGridView1.DataSource = Dt;

}

}

}

FROM2.CS專案名

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.OleDb;

using CaterDal;

namespace sqlssss

public partial class Form2 : Form

{

public Form2()

{

InitializeComponent();

}

private void button1_Click(object sender, EventArgs e)

{

DataTable Dt = new DataTable();

Dt = SqliteHelper.GetDataTable("select * from lishiji");

DgvQueue.DataSource = Dt;

}

}

}