C# winform 讀取資料庫並顯示成datagrid
阿新 • • 發佈:2019-01-03
using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Data.SqlClient; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; namespace WindowsFormsApplication2 { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { } private void button1_Click(object sender, EventArgs e) { //string sql = "select * from persons"; //string connectstr = @"Password=myPassword;Persist Security Info=True;User ID=sa;Initial Catalog=TESTDB;Data Source=IETEST\SQLEXPRESS"; //using (SqlConnection conn = new SqlConnection(connectstr)) { // conn.Open(); // SqlDataAdapter ada = new SqlDataAdapter(sql, conn); // DataSet ds = new DataSet(); // ada.Fill(ds); // dataGridView1.DataSource = ds.Tables[0]; //}; string sql = "select * from persons"; string conectionStr = @"Password=sa123456;Persist Security Info=True;User ID=sa;Initial Catalog=TESTDB;Data Source=IEGUORENJIE\SQLEXPRESS"; using (SqlConnection conn = new SqlConnection(conectionStr)) { conn.Open(); SqlDataAdapter ada = new SqlDataAdapter(sql, conn); DataSet ds = new DataSet(); ada.Fill(ds); dataGridView1.DataSource = ds.Tables[0]; } } private void toolStripMenuItem1_Click(object sender, EventArgs e) { } private void 圖1ToolStripMenuItem_Click(object sender, EventArgs e) { } } }