MySQL Keyword not supported: 'port' error in C# application

问题

I am trying to connect to MySQL database in my c# .Net application

I am getting this error when I try to connect: Keyword not supported: 'port'.

The error appears to indicate an issue with my connection string

<add name="mydataEntities" connectionString="server=myserver.com;port=3306;password=xxxx;user id=yyyy;database= mydatabase;persistsecurityinfo=True" providerName="MySql.Data.MySqlClient" />

I have reference added for: MySql.Data 6.9.7.0 (ADO.Net driver for MySQL) And MySql.Data.Entity.EF6 6.9.7.0(Entity Framework 6.0 supported)

In my config I have:

  <entityFramework>
    <defaultConnectionFactory type="System.Data.Entity.Infrastructure.LocalDbConnectionFactory, EntityFramework">
      <parameters>
        <parameter value="mssqllocaldb" />
      </parameters>
    </defaultConnectionFactory>
    <providers>
            <provider invariantName="MySql.Data.MySqlClient" type="MySql.Data.MySqlClient.MySqlProviderServices, MySql.Data.Entity.EF6, Culture=neutral, PublicKeyToken=c5687fc88969c44d">
      </provider>
    </providers>
  </entityFramework>

<dependentAssembly>
        <assemblyIdentity name="MySql.Data" publicKeyToken="c5687fc88969c44d" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-6.9.7.0" newVersion="6.9.7.0" />
 </dependentAssembly>

<system.data>
    <DbProviderFactories>
      <remove invariant="MySql.Data.MySqlClient" />
      <add name="MySQL Data Provider" invariant="MySql.Data.MySqlClient" description=".Net Framework Data Provider for MySQL" type="MySql.Data.MySqlClient.MySqlClientFactory, MySql.Data, Version=6.9.7.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d" />
    </DbProviderFactories>
  </system.data>

connection string is set here:

public class Repository
    {
        protected mydataEntities DbContext;

        public Repository()
        {

            DbContext = new mydataEntities (ConfigurationManager.ConnectionStrings["mydataEntities"].ConnectionString);
        }
}

I notice the stack trace appears to be using the System.Data.SqlClient provider as shown below:

I have removed the MySql.Data and MySql.Data.Entity.EF6 references, Clean solution , add back references then rebuild …..

Can anyone help me to figure out the source of this error?

Why isn’t the MySQL connector using providerName: MySql.Data.MySqlClient as specified in my config.

   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(DbConnectionPoolKey key, DbConnectionPoolGroupOptions poolOptions, DbConnectionOptions& userConnectionOptions)
   at System.Data.SqlClient.SqlConnection.ConnectionString_Set(DbConnectionPoolKey key)
   at System.Data.SqlClient.SqlConnection.set_ConnectionString(String value)
   at System.Data.SqlClient.SqlConnection..ctor(String connectionString, SqlCredential credential)
   at System.Data.SqlClient.SqlConnection..ctor(String connectionString)
   at System.Data.Entity.Infrastructure.SqlConnectionFactory.CreateConnection(String nameOrConnectionString)
   at System.Data.Entity.Infrastructure.LocalDbConnectionFactory.CreateConnection(String nameOrConnectionString)
   at System.Data.Entity.Internal.LazyInternalConnection.Initialize()
   at System.Data.Entity.Internal.LazyInternalConnection.get_ProviderName()
   at System.Data.Entity.Internal.LazyInternalContext.get_ProviderName()
   at System.Data.Entity.Internal.DefaultModelCacheKeyFactory.Create(DbContext context)
   at System.Data.Entity.Internal.LazyInternalContext.InitializeContext()
   at System.Data.Entity.Internal.InternalContext.Initialize()
   at System.Data.Entity.Internal.InternalContext.GetEntitySetAndBaseTypeForType(Type entityType)
   at System.Data.Entity.Internal.Linq.InternalSet`1.Initialize()
   at System.Data.Entity.Internal.Linq.InternalSet`1.GetEnumerator()
   at System.Data.Entity.Infrastructure.DbQuery`1.System.Collections.Generic.IEnumerable<TResult>.GetEnumerator()
   at System.Linq.Enumerable.WhereSelectEnumerableIterator`2.MoveNext()
   at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
   at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)

回答1:

Here is the solution:

I removed the following code from a partial class that overrides the connection string n the base.

public partial class mydataEntities
    {
        public mydataEntities(string connectionString) : base(connectionString) { }
    }

I am still confused by the solution but it appears that with this code the connection was attempting to use the Mssql data provider instead of MySql

来源：https://stackoverflow.com/questions/32686610/mysql-keyword-not-supported-port-error-in-c-sharp-application