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Difference between SelectedItem, SelectedValue and SelectedValuePath
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Their names can be a bit confusing :). Here's a summary:
The SelectedItem property returns the entire object that your list is bound to. So say you've bound a list to a collection of Category objects (with each Category object having Name and ID properties). eg. ObservableCollection&l...
When should I release objects in -(void)viewDidUnload rather than in -dealloc?
...don't see a view, I always release the whole controller. Althogh I have an root view controller which stays intact and manages all the loading/unloading of it's child view controllers...
– Thanks
Jul 21 '09 at 18:37
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COALESCE Function in TSQL
...ks perfectly & gives a good visual explanation of how COALESCE works:
SELECT Name, Class, Color, ProductNumber,
COALESCE(Class, Color, ProductNumber) AS FirstNotNull
FROM Production.Product
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How to hide one item in an Android Spinner
...d spinner widget. This would allow you to simulate a spinner with no items selected, and ensures that the onItemSelected() callback is always called for every item selected (if the hidden item is the "current" one). Normally there is always one item in the spinner that doesn't generate a callback, n...
Undefined method 'task' using Rake 0.9.0
...Rake does not put its DSL commands (task, file, desc, import, etc.) in the root of the Object namespace anymore (placing them in Object meant every object has a task command, not very nice. The DSL commands are available by mixing in the Rake::DSL module into any module needing the commands.
Until ...
SQL Server Output Clause into a scalar variable
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But then I'd have to "SELECT @someInt = ID FROM @ID". I wanted to know if its possible to skip that extra step (and intermediary table variable) if all I need is the resulting int.
– Benoittr
Apr 5 '11 at 21:...
How to Free Inode Usage?
...ion:
Try to find if this is an inodes problem with:
df -ih
Try to find root folders with large inodes count:
for i in /*; do echo $i; find $i |wc -l; done
Try to find specific folders:
for i in /src/*; do echo $i; find $i |wc -l; done
If this is linux headers, try to remove oldest with:
s...
How do I get the result of a command in a variable in windows?
...iped expression, use ^|:
FOR /F "delims=" %%i IN ('svn info . ^| findstr "Root:"') DO set "URL=%%i"
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How to generate a simple popup using jQuery
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First the CSS - tweak this however you like:
a.selected {
background-color:#1F75CC;
color:white;
z-index:100;
}
.messagepop {
background-color:#FFFFFF;
border:1px solid #999999;
cursor:default;
display:none;
margin-top: 15px;
position:absolute;
text-a...
Is it possible to deserialize XML into List?
...em;
using System.Collections.Generic;
using System.Xml.Serialization;
[XmlRoot("user_list")]
public class UserList
{
public UserList() {Items = new List<User>();}
[XmlElement("user")]
public List<User> Items {get;set;}
}
public class User
{
[XmlElement("id")]
public ...