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ASP.NET MVC - Attaching an entity of type 'MODELNAME' failed because another entity of the same type
...g() should be called while querying the context.
// User -> Receipt validation
private bool canUserAccessA(int aID)
{
int userID = WebSecurity.GetUserId(User.Identity.Name);
int aFound = db.Model.AsNoTracking().Where(x => x.aID == aID && x.UserID==userID).Count();
return ...
Are there any side effects of returning from inside a using() statement?
Returning a method value from inside a using statement that gets a DataContext seems to always work fine , like this:
5 ...
How to remove padding around buttons in Android?
In my Android app, I have this layout:
17 Answers
17
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What are some common uses for Python decorators? [closed]
...
Great example! No idea what it does though. An explanation what you are doing there, and how the decorator solves the problem would be very nice.
– MeLight
Jun 15 '14 at 16:00
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Best way to implement keyboard shortcuts in a Windows Forms application?
...
You probably forgot to set the form's KeyPreview property to True. Overriding the ProcessCmdKey() method is the generic solution:
protected override bool ProcessCmdKey(ref Message msg, Keys keyData) {
if (keyData == (Keys.Control | Keys.F)) {
MessageBox.Show("What the Ctrl+F?");
return...
String comparison in Python: is vs. == [duplicate]
...x==y is also
True.
Not always. NaN is a counterexample. But usually, identity (is) implies equality (==). The converse is not true: Two distinct objects can have the same value.
Also, is it generally considered better to just use '==' by default, even
when comparing int or Boolean value...
How to trigger event in JavaScript?
...eady accepted and the person who wrote the question (@KoolKabin) probably didn't re-read the answers
– Dorian
Jul 16 '16 at 13:24
4
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How to use System.Net.HttpClient to post a complex type?
...questMessage<T> has been removed. This :
new HttpRequestMessage<Widget>(widget)
will no longer work.
Instead, from this post, the ASP.NET team has included some new calls to support this functionality:
HttpClient.PostAsJsonAsync<T>(T value) sends “application/json”
HttpCli...
How to implement the Java comparable interface?
... implement the compareTo(Animal other) method that way you like it.
@Override
public int compareTo(Animal other) {
return Integer.compare(this.year_discovered, other.year_discovered);
}
Using this implementation of compareTo, animals with a higher year_discovered will get ordered higher. I ho...
How do I iterate through table rows and cells in JavaScript?
...
If you want to go through each row(<tr>), knowing/identifying the row(<tr>), and iterate through each column(<td>) of each row(<tr>), then this is the way to go.
var table = document.getElementById("mytab1");
for (var i = 0, row; row = table.rows[i]; i++) ...