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Update Row if it Exists Else Insert Logic with Entity Framework
... modifications automatically
context.SaveChanges();
If you can use any knowledge about the object's key you can use something like this:
if (myEntity.Id != 0)
{
context.MyEntities.Attach(myEntity);
context.ObjectStateManager.ChangeObjectState(myEntity, EntityState.Modified);
}
else
{
...
How do I fix the “You don't have write permissions into the /usr/bin directory” error when installin
...following content:
:gemdir:
- ~/.gem/ruby
install: -n /usr/local/bin
Now you can run your command normally without the -n flag.
Enjoy!
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How to select from subquery using Laravel Query Builder?
...misspelt the name, it should have been selectSub. I've updated my response now.
– Sasa Blagojevic
Sep 26 '18 at 7:39
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DbEntityValidationException - How can I easily tell what caused the error?
...riden SaveChanges without any refactor work.
Your exception message will now look like this:
System.Data.Entity.Validation.DbEntityValidationException: Validation
failed for one or more entities. See 'EntityValidationErrors' property
for more details. The validation errors are: The field P...
How to count items in a Go map?
...ents queued in channel buffer
Here are a couple examples ported from the now-retired SO documentation:
m := map[string]int{}
len(m) // 0
m["foo"] = 1
len(m) // 1
If a variable points to a nil map, then len returns 0.
var m map[string]int
len(m) // 0
Excerpted from Maps - Counting map ele...
How do you assert that a certain exception is thrown in JUnit 4 tests?
...d add is that in this case I would test for a custom exception, so that I know I am getting the exception I really want.
– nickbdyer
May 3 '16 at 12:22
...
Regex match everything after question mark?
...am using Yahoo Pipes which excepts regex. I got this question answered and now looking for a regex that select 6 chars behind a colon and as many (all) forwards..
– Mark
Dec 11 '10 at 21:39
...
How can I reset or revert a file to a specific revision?
...file which has been committed a few times as part of a group of files, but now want to reset/revert the changes on it back to a previous version.
...
How do I scroll to an element within an overflowed Div?
...at a time. What is a good way to scroll to item #10, and then item #20? I know the height of all the items.
7 Answers
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Programmatically Hide/Show Android Soft Keyboard [duplicate]
...
Well Dyarish, Your solutions certainly hide the keyboard. Now let me play with this to show keyboard on startup
– Krishnabhadra
Sep 1 '11 at 3:28
...