MySqlException: There is already an open DataReader associated with this Connection which must be closed first.
Parallel.ForEach 然后报了上面的错误,怎么处理
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male110 OP System.Data.Entity.Core.EntityException:“基础提供程序在 EnlistTransaction 上失败。”
内部异常 InvalidOperationException: Nested transactions are not supported. |
2
Presbyter 2018-04-04 22:40:16 +08:00
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3
beginor 2018-04-05 09:55:08 +08:00 via Android
一个 connection 通常只能有一个 reader 在用
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