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WPF Data Binding and Validation Rules Best Practices
I have a very simple WPF application in which I am using data binding to allow editing of some custom CLR objects. I am now wanting to put some input validation in when the user clicks save. However, all the WPF books I have read don't really devote any space to this issue. I see that you can create...
Is it unnecessary to put super() in constructor?
Isn't this one automatically put by the compiler if I don't put it in a subclass's constructor?
6 Answers
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SQL Server dynamic PIVOT query?
...edure is going to take in the key variables of a pivot statement to dynamically create pivot statements for varying tables, column names and aggregates. The Static column is used as the group by / identity column for the pivot(this can be stripped out of the code if not necessary but is pretty commo...
What framework for MVVM should I use? [closed]
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It really depends on what you are trying to achieve, and how much infrastructure you want in place already, plus the ease with which you can find samples that help you out. I'm going to declare an interest here, because I've been ...
Sleep Command in T-SQL?
... want to be able to run some tests to see if the asynchronous pattern is really going to make it more scalable. In order to "mock" an external service that is slow, I want to be able to call a SQL server with a script that runs slowly, but isn't actually processing a ton of stuff.
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How is the default submit button on an HTML form determined?
...he submit that you had a reference to is considered active; this doesn't really fall under the remit of your question since here the submit button is unambiguous but I thought I'd include it for people who read the first part and wonder how to make a submit button successful via JS form submission. ...
await vs Task.Wait - Deadlock?
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Wait and await - while similar conceptually - are actually completely different.
Wait will synchronously block until the task completes. So the current thread is literally blocked waiting for the task to complete. As a general rule, you should use "async all the ...
What are Runtime.getRuntime().totalMemory() and freeMemory()?
...Memory()
Returns the amount of free memory in the Java Virtual Machine. Calling the gc method may result in increasing the value returned by freeMemory.
In reference to your question, maxMemory() returns the -Xmx value.
You may be wondering why there is a totalMemory() AND a maxMemory(). The an...
What is q=0.5 in Accept* HTTP headers?
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This is called a relative quality factor. It specifies what language the user would prefer, on a scale of 0 to 1, as can be seen from the HTTP/1.1 Specification, §14.4:
Each language-range MAY be given an associated quality value w...
Difference between “change” and “input” event for an `input` element
...st browsers when content is changed and
the element loses focus. It's basically an aggregate of changes. It will not fire for every single change as in the case input event.
The input event fires synchronously on change of the content for the element. As such, the event listener tends to fire more f...