ASP.NET use SqlConnection connect MySQL

问题

This is the connection string saved in web.config:

<appSettings>
    <add key=\"conn\" value=\"Driver={MySQL ODBC 5.1 Driver};server=127.0.0.1;uid=root;pwd=1234;database=gis_server;option=3\"/>
    </appSettings>

This is the code to connect to the database:

protected bool CheckPasswordBySqlServer(string strEmail, string strPsw)
{
    if (strEmail.ToLower() == \"admin\")
    {
        return false;
    }
    string str = \"select id,Rank,RankEnc,ParentUser,Company from tbl_User where userName=@UserName and password1=@password\";
    private string strConn = ConfigurationManager.AppSettings[\"conn\"].ToString();
    SqlConnection sqlConnection = new SqlConnection(strConn);
    bool flag = false;
    try
    {
        try
        {
            sqlConnection.Open();
            SqlCommand sqlCommand = new SqlCommand(str, sqlConnection);
            sqlCommand.Parameters.AddWithValue(\"UserName\", strEmail);
            sqlCommand.Parameters.AddWithValue(\"Password\", strPsw);
            SqlDataReader sqlDataReader = sqlCommand.ExecuteReader();
            if (!sqlDataReader.Read())
            {
                flag = false;
            }
            else
            {
                this.Session[\"UserName\"] = strEmail;
                this.Session[\"Password\"] = strPsw;
                this.Session[\"LoginType\"] = \"Group\";
                this.Session[\"FullName\"] = sqlDataReader[\"Company\"].ToString();
                if (FormsAuthentication.HashPasswordForStoringInConfigFile(string.Concat(strEmail, (char)43, sqlDataReader[\"Rank\"].ToString()).ToLower(), \"MD5\") != sqlDataReader[\"RankEnc\"].ToString().Trim())
                {
                    flag = false;
                }
                this.Session[\"ClientID\"] = sqlDataReader[\"id\"].ToString();
                this.Session[\"MyLanguage\"] = base.Request.Cookies[\"Language\"].Value;
                this.Session[\"ParentUser\"] = sqlDataReader[\"ParentUser\"].ToString().Trim();
                this.Session[\"Rank\"] = sqlDataReader[\"Rank\"].ToString();
                this.Session[\"strConnection\"] = this.strConn;
                flag = true;
            }
            sqlDataReader.Close();
        }
        catch (Exception exception)
        {
            this.SetlblInfoHtml(exception.Message);
        }
    }
    finally
    {
        sqlConnection.Close();
    }
    return flag;
}

But it fails to connect MySQL, with this return error:

System.ArgumentException: Keyword not supported: \'driver\'. at System.Data.Common.DbConnectionOptions.ParseInternal(Hashtable parsetable, String connectionString, Boolean buildChain, Hashtable synonyms, Boolean firstKey) at System.Data.Common.DbConnectionOptions..ctor(String connectionString, Hashtable synonyms, Boolean useOdbcRules) at System.Data.SqlClient.SqlConnectionString..ctor(String connectionString) at System.Data.SqlClient.SqlConnectionFactory.CreateConnectionOptions(String connectionString, DbConnectionOptions previous) at System.Data.ProviderBase.DbConnectionFactory.GetConnectionPoolGroup(String connectionString, DbConnectionPoolGroupOptions poolOptions, DbConnectionOptions& userConnectionOptions) at System.Data.SqlClient.SqlConnection.ConnectionString_Set(String value) at System.Data.SqlClient.SqlConnection.set_ConnectionString(String value) at System.Data.SqlClient.SqlConnection..ctor(String connectionString) at Source_LoginFrm.CheckPasswordBySqlServer(String strEmail, String strPsw) at Source_LoginFrm.btnLogin_Click(String strLang)

Is that possible SqlConnection to connect MySQL database?

回答1:

SqlConnection is for SQL Server. You need MySqlConnection - this is not part of the .NET Framework, so you will have to download it and reference it in your project. You can then create a MySqlConnection object and connect to MySQL in your application:

MySqlConnection connection = new MySqlConnection(myConnString);

You will also have to use the MySqlCommand object rather than the SqlCommand object.

http://dev.mysql.com/doc/refman/5.0/es/connector-net-examples-mysqlconnection.html

回答2:

Not that I know of, and even if it would, why would you want to? You are using a connection object specifically created for Microsoft SQL Server, so it wouldn't connect in the same fashion MySQL does.

For accessing a MySQL database, you should use the MySQL .NET connector which you can find here.

回答3:

as Darren seid "SqlConnection is for SQL Server." you need to install MySql.Data from NuGet: mySql.Data

also you can use Install-Package MySql.Data in your Package Manager Console

then you can create MySqlConnection object and connect to your database:

var cnn = new MySqlConnection("my Connection String");

来源：https://stackoverflow.com/questions/18253120/asp-net-use-sqlconnection-connect-mysql

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