C
C#•2y ago
kopuo

DbContext.SaveChangesAsync has no effect on the collection of changed objects

Hi. I get products collection from dbContext, change some values and want to save it in the database, but after SaveChangesAsync () is done in the database there are no changes. When previewing objects from dbContext at the end, I also cannot see the edited fields: 
var products = await _dbContext.Products.AsEnumerableAsync()

foreach(var p in products)
{
  if(p.Price == 0)
    p.Price = 10
}

await _dbContext.AddRangeAsync(products);

await _dbContext.SaveChangesAsync();
var products = await _dbContext.Products.AsEnumerableAsync()

foreach(var p in products)
{
  if(p.Price == 0)
    p.Price = 10
}

await _dbContext.AddRangeAsync(products);

await _dbContext.SaveChangesAsync();
Product is an entity btw.
5 Replies
Unknown User
Unknown User•2y ago
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kopuo
kopuo•2y ago
Without it, it also does'nt save changes to the database
Unknown User
Unknown User•2y ago
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Mayor McCheese
Mayor McCheese•2y ago
EF tracks this for you
kopuo
kopuo•2y ago
Ok, on the List works
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