Question

我该怎么做才能连接到MySql？

string constr = "Data Source=steve-pc;Initial Catalog=itcast2014;Integrated Security=True";

using (SqlConnection con = new SqlConnection(constr))
{
    string sql = "select count(*) from TblPerson";

    using (SqlCommand cmd = new SqlCommand(sql, con))
    {
        con.Open();

        //object count = (int)cmd.ExecuteScalar();

        object count = Convert.ToInt32(cmd.ExecuteScalar());
        Console.WriteLine("TblPerson表中共有{0}条数据。", count);
    }
}

Answer 1

安装Oracle的MySql.Data NuGet软件包，将其添加为软件包，这是最简单的方法。您无需其他任何操作即可使用MySQL数据库。

或者您可以在Package Manager控制台中运行以下命令

PM> Install-Package MySql.Data

此答案可以帮助您：How to connect to MySQL Database?

Answer 2

您将必须安装mysql数据包。一旦安装并添加了引用，就可以这样：

string server = "steve-pc";
string database = "itcast2014";
string username = "YourMysqlUsername";
string password = "YourMysqlPassword";
string connstring = string.Format("Server={0}; database={1}; UID={2}; password={3}",server, database, username, password);


using(var connection = new MySqlConnection(connstring);
{  
    connection.Open();

    string query = "select count(*) from TblPerson";
    var cmd = new MySqlCommand(query, dbCon.Connection);
    var reader = cmd.ExecuteReader();
    while(reader.Read())
    {
        string personsCount = reader.GetString(0);
        Console.WriteLine(personsCount);
    }
    connection.Close();
}

对此更详细，更好的答案在How to connect to MySQL Database?

如何使用C＃连接mysql8.0

2 个答案: