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Value cannot be null. Parameter name: source
...e else who might have this issue.
I was calling Count on an instance of DbSet with a filter of null i.e.
dbSet.Count(null);
I found that passing null here was causing the error so I now call the parameter-less method if the filter is null:
if (filter == null)
{
return dbSet.Count();
}
...
How to set top-left alignment for UILabel for iOS application?
... self = [super initWithFrame:frame];
if (!self) return nil;
// set inital value via IVAR so the setter isn't called
_verticalAlignment = VerticalAlignmentTop;
return self;
}
-(VerticalAlignment) verticalAlignment
{
return _verticalAlignment;
}
-(void) setVerticalAlignment:...
How do I set up NSZombieEnabled in Xcode 4?
How do I set up NSZombieEnabled and CFZombieLevel for my executable in Xcode 4?
7 Answers
...
How to clear an ImageView in Android?
...
I used to do it with the dennis.sheppard solution:
viewToUse.setImageResource(0);
it works but it is not documented so it isn't really clear if it effects something else in the view (you can check the ImageView code if you like, i didn't).
I think the best solution is:
viewToUse.se...
jquery select change event get selected option
I bound an event on the change event of my select elements with this:
9 Answers
9
...
What is the difference between an interface and abstract class?
What exactly is the difference between an interface and abstract class?
37 Answers
37
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mongodb, replicates and error: { “$err” : “not master and slaveOk=false”, “code” : 13435 }
I tried mongo replica sets for the first time.
7 Answers
7
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How to make a class property? [duplicate]
...is:
class ClassPropertyDescriptor(object):
def __init__(self, fget, fset=None):
self.fget = fget
self.fset = fset
def __get__(self, obj, klass=None):
if klass is None:
klass = type(obj)
return self.fget.__get__(obj, klass)()
def __set__(sel...
How do you truncate all tables in a database using TSQL?
...le. I am not interested in rebuilding the entire database- just simply "re-setting" the data.
17 Answers
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