Question
When I run the following code in my Seed method, the Package manager Console keeps throwing a "Sequence contains no elements" error.
context.Countries.AddOrUpdate(c => c.Name,
new Country { IsInUse = true, Name = "Botswana", Alpha2 = "BW", Alpha3 = "BWA" },
new Country { IsInUse = true, Name = "Lesotho", Alpha2 = "LS", Alpha3 = "LSO" },
new Country { IsInUse = true, Name = "Mozambique", Alpha2 = "MZ", Alpha3 = "MOZ" },
new Country { IsInUse = true, Name = "South Africa", Alpha2 = "ZA", Alpha3 = "ZAF" },
new Country { IsInUse = true, Name = "Swaziland", Alpha2 = "SZ", Alpha3 = "SWZ" },
new Country { IsInUse = true, Name = "Zimbabwe", Alpha2 = "ZW", Alpha3 = "ZWE" }
);
Country za = context.Countries.Where(x => x.Name == "South Africa").First();
I need to get the South Africa country object to perform the rest of the steps (not shown).
If I use FirstOrDefault or SingleOrDefault the system returns a null, which breaks the rest of the steps.
Why is my context returning null when I clearly added the data.
I have tried SaveChanges, but that causes other errors.
Thanks
Accepted Answer
you'll need to call SaveChanges() to apply the changes to the database. Until you do that, nothing is actually being written.
context.SaveChanges();
Country za = context.Countries.Where(x => x.Name == "South Africa").First();
If SaveChanges() is throwing an error, then that's your real problem, and you should post that.
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