c#连接数据库sql

c#连接数据库sql的几种方式

c#连接数据库sql几种方式

首先引用

using System.Data;
using System.Data.SqlClient;
using System.Data.Odbc;

1.sa连接

        //1.sa连接
        SqlConnectionStringBuilder scsb = new SqlConnectionStringBuilder();
        scsb.DataSource = ".";//本地
        scsb.UserId = "sa";
        scsb.Password = "123456789";
        scsb.InitialCatalog = "Demo_db";

//or
scsb.ConnectionString = "Data Source=.;Initial Catalog=Demo_db;User ID=sa;Password = 123456789;"

//or
scsb.ConnectionString = "server=.;database=Demo_db;uid=sa;pwd = 123456789;"

2.windows连接

//直接定义字符串
string strconn = "Data Source=.;Initial Catalog=stu_db;Integrated Security=True";