1 static void Main(string[] args) 2 { 3 int resLine = 0; 4 //鏈接字符串 5 string temp = @"ZZ-NBPC0003\AMSSQLSERVER"; 6 string str = "Data Source=" + temp + ";Initial Catalog=dbtest;Integrated Security=True;"; 7 using (SqlConnection sqlConn = new SqlConnection(str)) //1.創建鏈接 8 { 9 //string sql = "select * from test update test set cTitle='數學' where CID BETWEEN 17 AND 20"; 10 string sql = "select * from test update test set cTitle='英語' where CID<5"; 11 string sql1 = "select COUNT(*) from test"; 12 string sql2 = "select * from test"; 13 using (SqlCommand cmd = new SqlCommand(sql, sqlConn)) //2.建立Command對象 14 { 15 16 sqlConn.Open(); //3.打開並執行 17 18 resLine = cmd.ExecuteNonQuery(); 19 //SqlDataReader srd = cmd.ExecuteReader(); //insert/delete/update 20 21 //cmd.ExecuteReader();// 查詢多行多列的時候 默認狀況下獨佔一個sqlConn鏈接對象 22 23 //cmd.ExecuteScalar();//返回單個結果 24 25 //cmd.Dispose(); 26 27 }