EF 带外键关系更新实体问题
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[已解决问题]
解决于 2020-08-17 14:57
最佳答案
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https://stackoverflow.com/questions/25417849/unable-to-update-foreign-key-in-entity-framework-6
Basically this happens because EntryState.Modified just looks for scalar properties (primitive types) and with independent association (your case) you don't have it.
GraphDiff
using (var context = new Context())
{
var customer = new Customer()
{
Id = 12503,
Name = "Jhon Doe",
City = new City() { Id = 8, Name = "abc" }
};
context.UpdateGraph(customer, map => map.AssociatedEntity(p => p.City));
context.Configuration.AutoDetectChangesEnabled = true;
context.SaveChanges();
}
其他回答(2)
0
我替你at去
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最后一个没at到
大侠，瞅瞅问题啊
0
好久没用了，我有空试试，你用版本是什么？
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6.4
找了个库，大概是解决了，会长
@猝不及防: 赞
