.NET(C#) 操作MySQL报错Character set 'utf8mb3' is not supported 解决方法

报错信息：

[21:15:49,107] Server Properties Lookup: Error While Initialization
DOL.Database.DatabaseException: Table DOL.Database.ServerProperty is not registered for Database Connection...
   at DOL.Database.ObjectDatabase.SelectAllObjects[TObject]()
   at DOL.GS.ServerProperties.Properties.get_AllDomainProperties()
   at DOL.GS.ServerProperties.Properties.InitProperties()
   at DOL.GS.GameServer.InitComponent(Action componentInitMethod, String text)```
also this error
[21:15:35,991] ExecuteSelectImpl: UnHandled Exception for Select Query "DESCRIBE `Specialization`"
System.NotSupportedException: Character set 'utf8mb3' is not supported by .Net Framework.
   at MySql.Data.MySqlClient.CharSetMap.GetCharacterSet(DBVersion version, String charSetName)
   at MySql.Data.MySqlClient.MySqlField.SetFieldEncoding()
   at MySql.Data.MySqlClient.NativeDriver.GetColumnData(MySqlField field)
   at MySql.Data.MySqlClient.NativeDriver.GetColumnsData(MySqlField[] columns)
   at MySql.Data.MySqlClient.Driver.GetColumns(Int32 count)
   at MySql.Data.MySqlClient.ResultSet.LoadColumns(Int32 numCols)
   at MySql.Data.MySqlClient.ResultSet..ctor(Driver d, Int32 statementId, Int32 numCols)
   at MySql.Data.MySqlClient.Driver.NextResult(Int32 statementId, Boolean force)
   at MySql.Data.MySqlClient.MySqlDataReader.NextResult()
   at MySql.Data.MySqlClient.MySqlDataReader.Close()
   at MySql.Data.MySqlClient.MySqlCommand.ResetReader()
   at MySql.Data.MySqlClient.MySqlCommand.ExecuteReader(CommandBehavior behavior)
   at MySql.Data.MySqlClient.MySqlCommand.ExecuteDbDataReader(CommandBehavior behavior)
   at System.Data.Common.DbCommand.ExecuteReader()
   at DOL.Database.SQLObjectDatabase.ExecuteSelectImpl(String SQLCommand, IEnumerable`1 parameters, Action`1 Reader)```

解决方法：

修改字符集和排序为utf8mb4。

修改数据：

ALTER DATABASE
    database_name
    CHARACTER SET = utf8mb4
    COLLATE = utf8mb4_unicode_ci;

修改表：

ALTER TABLE
    table_name
    CONVERT TO CHARACTER SET utf8mb4
    COLLATE utf8mb4_unicode_ci;

修改列：

ALTER TABLE
    table_name
    CHANGE column_name column_name
    VARCHAR(191)
    CHARACTER SET utf8mb4
    COLLATE utf8mb4_unicode_ci;