小编Fer*_*res的帖子

我一直在尝试使用 SaveChangesAsync() 在 Entity Framework Core 中进行更新，但总是收到此错误：

DbUpdateConcurrencyException: Database operation expected to affect 1 row(s) but actually affected 0 row(s). Data may have been modified or deleted since entities were loaded. See http://go.microsoft.com/fwlink/?LinkId=527962 for information on understanding and handling optimistic concurrency exceptions.

我可以毫无麻烦地添加一个新的Employee，方法基本相同。

当我调用 SaveChangesAsync() 时发生错误。

堆栈跟踪

DbUpdateConcurrencyException: Database operation expected to affect 1 row(s) but actually affected 0 row(s). Data may have been modified or deleted since entities were loaded. See http://go.microsoft.com/fwlink/?LinkId=527962 for information on understanding and handling optimistic …