如何使用Json读取文件中的Json集合。净在c#中

I have this json file :

我有一个json文件

{
   “transactions”:[
      {
         “type”:”deposit”,
         “account_id”:123456789012345,
         “amount”:20000.0
      },
      {
         “type”:”deposit”,
         “account_id”:555456789012345,
         “amount”:20000.0
      },
      {
         “type”:”payment”,
         “account_id”:123456789012345,
         “amount”:20000.0
      },
      {
         “type”:”transfer”,
         “from”:555456789012345,
         “to”:123456789012345,
         “amount”:20000.0
      }
   ]
}
{
   “tr