I have been working my way through Scott Guthrie's excellent post on ASP.NET MVC Beta 1. In it he shows the improvements made to the UpdateModel method and how they improve unit testing. I have recreated a similar project however anytime I run a UnitTest that contains a call to UpdateModel I receive an ArgumentNullException naming the ...
I'm terribly tired of checking all my arguments for null, and throwing ArgumenutNullExceptions when they are. As I understand it, C# 4.0 enables some design by contract constructs. Will it be possible to specify that a method will not accept null arguments in C# 4.0? Also, is there anything I can do in the meantime (maybe an attribute?...
So I have this compiler class that compiles some .mjava files but others it fails on and wondering if anyone can help me figure out why. I have two methods that break for two different files. The first consts.mjava file I try to compile is: // demo of true local and global variables int glob0; int glob1; final int two = 2; final int th...
For a day now i'm stuck with this null problem in my repository. here is my piece of code writen for linq to sql... i've tried a lot of options but no help for this. the problem here is if the vidList got null value, it got stuck right in 3rd line. if the vidList is ok, but the fidListE got null, it will stil cause null exception in t...
I have a C# method which creates a new instance of a class from a string, however, I get an error when running the code. obj = (ClassX)Activator.CreateInstance(Type.GetType("classPrefix_" + className)); ArgumentNullException was unhandled Value cannot be null Parameter name: type Any help on this error would be apprecia...
Are there any cases when it's a good idea to throw errors that can be avoided? I'm thinking specifically of the DivideByZeroException and ArgumentNullException For example: double numerator = 10; double denominator = getDenominator(); if( denominator == 0 ){ throw new DivideByZeroException("You can't divide by Zero!"); } Are the...
Hi all, I'm working with a new WPF project in .NET 4.0 using the Expression 4 beta, but when opening up a project that originated in the VS designer Expression is throwing all sorts of exceptions. It seems to happen as a reaction to a variety of different actions--selecting a control, moving a control, basically any manipulation of the ...
I have an action listener set up on my main jframe menu for the buttons listed on it, and they work fine, bringing up other jframes as needed. The problem is when a person clicks the buttons on the jframes brought up I get a nullexception after a jbutton is clicked on that submenu jframe. Example code: public class main extends JFrame...
I have a weird problem with EditorFor in one of my views. The following code throws an ArgumentNullException. <%: Html.EditorFor(x => x.Name) %> However, the following code is fine. <%: Html.TextBoxFor(x => x.Name) %> Model.Name is a string variable - and it's set. EditorFor works in another view - until this view crashes, at whi...