C#简单的连接本地SQL Server

代码展示：

    public partial class Form1 : Form{string connStr = "Server=localhost;Database=MyFirstDB;Uid=sa;Pwd=123456";public Form1(){InitializeComponent();SqlConnection connection = new SqlConnection(connStr);connection.Open();MessageBox.Show(connection.State.ToString());connection.Close();}}

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连接成功的话会弹出一个提示：open