我从读者那里读取架构时没有得到DataTypeName

Question

我可以找到所有值，但特定列字段的数据名称

MySqlConnection con = new MySqlConnection(connectionString)
con.Open();

var QueryCommand = new MySqlCommand("Select * from Customers", con);
var ResultReader = QueryCommand.ExecuteReader(CommandBehavior.SchemaOnly);

var dt = ResultReader.GetSchemaTable();