Thread.CurrentPrincipal is the way .NET applications represent the identity of the user or service account running the process. It can hold one or more identities and allows the application to check if the principal is in a role through the IsInRole method. Most authentication libraries in .NET will verify the user’s credentials and set this … Read more
Yeah, what you said about using a single CancellationToken is correct. You can create a single CancellationTokenSource and use its CancellationToken for all of the tasks. Your tasks should check the token regularly for cancellation. For example: const int NUM_TASKS = 4; CancellationTokenSource cts = new CancellationTokenSource(); CancellationToken ct = cts.Token; Task[] tasks = new … Read more
Optional arguments are “sort-of” CLS-compliant. Methods with optional arguments are legal and can be successfully compiled with the CLSCompliant attribute, but callers of those methods don’t necessarily need to take account of the default parameter values or the optional attribute. (In which case those methods would behave in exactly the same way as standard methods, … Read more
I’ve also gotten this problem in my EF one-many deals where the one has a List of the many property and my mapping didn’t specify that property. For example take: public class Notification { public long ID { get; set; } public IList<NotificationRecipient> Recipients { get; set; } } then public class NotificationRecipient { public … Read more
It is because you copied the .pdb files as well as the executables. The CLR will look for them when it generates a stack trace to try to give as much info as possible about the stack frames in the trace. The .pdb stores the source file name and line number. You are supposed to … Read more
Using reflection, you will need to look for fields; these are not properties. As you can see from the following code, it looks for public static members: class Program { static void Main(string[] args) { Type t = typeof(A7); FieldInfo[] fields = t.GetFields(BindingFlags.Static | BindingFlags.Public); foreach (FieldInfo fi in fields) { Console.WriteLine(fi.Name); Console.WriteLine(fi.GetValue(null).ToString()); } Console.Read(); … Read more
if(conditions[name] is string) { } else { }
To add an item, you would call myContextMenuStrip.Items.Add(“Item title”, null, myClickHandler); To add a sub-menu, you take an existing item and do the same to it: (myContextMenuStrip.Items[0] as ToolStripMenuItem).DropDownItems.Add(…)
You can create mixin-like constructs in C# 4.0 without using dynamic, with extension methods on interfaces and the ConditionalWeakTable class to store state. Take a look here for the idea. Here’s an example: public interface MNamed { // required members go here } public static class MNamedCode { // provided methods go here, as extension … Read more
I was the technical editor for Mark’s book. I quite enjoyed it, it is well written, and accurate. An interesting thing about the difference between Mark’s book and Jon’s book (for which I was also the technical editor) is that both of them have accurate titles. “C# in Depth” really does go into quite a … Read more