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The object cannot be deleted because it was not found in the ObjectStateManager
... instance). Try this:
protected MyEntities sqlEntities;
public virtual void Delete(TEntity entity)
{
sqlEntities.Attach(entity);
sqlEntities.DeleteObject(entity);
sqlEntities.SaveChanges();
}
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How can I set focus on an element in an HTML form using JavaScript?
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Do this.
If your element is something like this..
<input type="text" id="mytext"/>
Your script would be
<script>
function setFocusToTextBox(){
document.getElementById("mytext").focus();
}
</script>
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Check if a temporary table exists and delete if it exists before creating a temporary table
...e the columns. If I add a column later, it will give an error saying "invalid column". Please let me know what I am doing wrong.
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How does autowiring work in Spring?
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First, and most important - all Spring beans are managed - they "live" inside a container, called "application context".
Second, each application has an entry point to that context. Web applications have a Servlet, JSF uses a el-resolver, etc. Also, there is a place where the application context i...
WebDriver: check if an element exists? [duplicate]
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You could alternatively do:
driver.findElements( By.id("...") ).size() != 0
Which saves the nasty try/catch
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What are the differences between the different saving methods in Hibernate?
...OrUpdate
Calls either save or update depending on some checks. E.g. if no identifier exists, save is called. Otherwise update is called.
save
Persists an entity. Will assign an identifier if one doesn't exist. If one does, it's essentially doing an update. Returns the generated ID of the entit...
Check if value exists in Postgres array
...Thanks. Must have skipped that part of manual. This works great. It has a side effect of automatic casting. Ex: SELECT 1::smallint = ANY ('{1,2,3}'::int[]) works. Just make sure to put ANY() on the right side of expression.
– Mike Starov
Jun 27 '12 at 23:52
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Using SSH keys inside docker container
...d command
$ docker build -t example --build-arg ssh_prv_key="$(cat ~/.ssh/id_rsa)" --build-arg ssh_pub_key="$(cat ~/.ssh/id_rsa.pub)" --squash .
Dockerfile
FROM python:3.6-slim
ARG ssh_prv_key
ARG ssh_pub_key
RUN apt-get update && \
apt-get install -y \
git \
openss...
How to set value of input text using jQuery
...rounding <div class='textBoxEmployeeNumber'> instead of the input inside it.
// Access the input inside the div with this selector:
$(function () {
$('.textBoxEmployeeNumber input').val("fgg");
});
Update after seeing output HTML
If the ASP.NET code reliably outputs the HTML <input>...
Jackson and generic type reference
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It works : I did the following: JavaType topMost = mapper.getTypeFactory().constructParametricType(MyWrapper.class, ActualClassRuntime.class); and then did the readValue and it finally worked :)
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