/// <summary>
 /// 设置命令参数对象的 DbType属性
 /// </summary>
 /// <param name="parameter">命令参数对象</param>
 /// <param name="dbType">DbType属性</param>
 public static void DbType(this SQLiteParameter parameter, object dbType)
 {
     if (dbType != null)
     {
         if (dbType is DbType)
         {
             parameter.DbType = (DbType)dbType;
         }
         else
         {
             SQLiteUtils.ThrowException(dbType);
         }
     }
 }
 /// <summary>
 /// 是否日期+时间+精度类型
 /// </summary>
 /// <param name="dbType">DbType属性</param>
 public static bool IsDateTime2(object dbType)
 {
     if (dbType == null)
     {
         return(false);
     }
     else if (dbType is DbType)
     {
         return(((DbType)dbType) == System.Data.DbType.DateTime2);
     }
     else
     {
         return(SQLiteUtils.ThrowException(dbType));
     }
 }