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Validation failed for one or more entities while saving changes to SQL Server Database using Entity
I want to save my Edit to Database and I am using Entity FrameWork Code-First in ASP.NET MVC 3 / C# but I am getting errors. In my Event class, I have DateTime and TimeSpan datatypes but in my database, I've got Date and time respectively. Could this be the reason? How can I cast to the appropriate ...
Unzip files programmatically in .net
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We have used SharpZipLib successfully on many projects. I know it's a third party tool, but source code is included and could provide some insight if you chose to reinvent the wheel here.
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Sort a list of tuples by 2nd item (integer value) [duplicate]
I have a list of tuples that looks something like this:
9 Answers
9
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How do you performance test JavaScript code?
...ds. Everything was actually rendering pretty fast, no single operation took a long time, there was just a lot of information being rendered all at once, so it felt slow to the user.
We 'fixed' this, not by switching to a faster component, or optimizing some method, but by rendering the data firs...
Tools to get a pictorial function call graph of code [closed]
I have a large work space which has many source files of C code. Although I can see the functions called from a function in MS VS2005 using the Object browser, and in MSVC 6.0 also, this only shows functions called from a particular function in a non-graphical kind of display. Additionally, it does ...
Can I use break to exit multiple nested 'for' loops?
Is it possible to use the break function to exit several nested for loops?
20 Answers
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Why Doesn't C# Allow Static Methods to Implement an Interface?
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Assuming you are asking why you can't do this:
public interface IFoo {
void Bar();
}
public class Foo: IFoo {
public static void Bar() {}
}
This doesn't make sense to me, semantically. Methods specified on an interface should be th...
Java - No enclosing instance of type Foo is accessible
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static class Thing will make your program work.
As it is, you've got Thing as an inner class, which (by definition) is associated with a particular instance of Hello (even if it never uses or refers to it), which means it's an error to say new Thing(...
Best timestamp format for CSV/Excel?
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For second accuracy, yyyy-MM-dd HH:mm:ss should do the trick.
I believe Excel is not very good with fractions of a second (loses them when interacting with COM object IIRC).
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Are +0 and -0 the same?
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JavaScript uses IEEE 754 standard to represent numbers. From Wikipedia:
Signed zero is zero with an associated sign. In ordinary arithmetic, −0 = +0 = 0. However, in computing, some number representations allow for the existence of two zeros, often denoted by −0 (negative zero) a...