In most cases connection pooling problems are related to connection leaks. Your application probably doesn’t close its database connections correctly and consistently. When you leave connections open, they remain blocked until the .NET garbage collector closes them for you by calling their Finalize() method. You want to make sure that you are really closing the … Read more
The theoretical limit may be 2,147,483,647, but the practical limit is nowhere near that. Since no single object in a .NET program may be over 2GB and the string type uses UTF-16 (2 bytes for each character), the best you could do is 1,073,741,823, but you’re not likely to ever be able to allocate that … Read more
You can create a custom markup extension. Example of usage: enum Status { [Description(“Available.”)] Available, [Description(“Not here right now.”)] Away, [Description(“I don’t have time right now.”)] Busy } At the top of your XAML: xmlns:my=”clr-namespace:namespace_to_enumeration_extension_class and then… <ComboBox ItemsSource=”{Binding Source={my:Enumeration {x:Type my:Status}}}” DisplayMemberPath=”Description” SelectedValue=”{Binding CurrentStatus}” SelectedValuePath=”Value” /> And the implementation… public class EnumerationExtension : MarkupExtension … Read more
Connection pooling is handled as in any other ADO.NET application. Entity connection still uses traditional database connection with traditional connection string. I believe you can turn off connnection pooling in connection string if you don’t want to use it. (read more about SQL Server Connection Pooling (ADO.NET)) Never ever use global context. ObjectContext internally implements … Read more
I will try to further clarify your doubts and extend Jon Skeet answer. .NET Standard is a specification, so a library compiled for a specific .NET Standard version can be used in different .NET Standard implementations. As said in my other comment, a good analogy for the relationship between .NET Standard and other .NET Standard … Read more
Base implementation, without custom properties SerializableExceptionWithoutCustomProperties.cs: namespace SerializableExceptions { using System; using System.Runtime.Serialization; [Serializable] // Important: This attribute is NOT inherited from Exception, and MUST be specified // otherwise serialization will fail with a SerializationException stating that // “Type X in Assembly Y is not marked as serializable.” public class SerializableExceptionWithoutCustomProperties : Exception { public … Read more
The other answers with reasons why the Banker’s algorithm (aka round half to even) is a good choice are quite correct. It does not suffer from negative or positive bias as much as the round half away from zero method over most reasonable distributions. But the question was why .NET use Banker’s actual rounding as … Read more
DateTime.UtcNow tells you the date and time as it would be in Coordinated Universal Time, which is also called the Greenwich Mean Time time zone – basically like it would be if you were in London England, but not during the summer. DateTime.Now gives the date and time as it would appear to someone in … Read more
The registry is the official way to detect if a specific version of the Framework is installed. Which registry keys are needed change depending on the Framework version you are looking for: Framework Version Registry Key —————————————————————————————— 1.0 HKLM\Software\Microsoft\.NETFramework\Policy\v1.0\3705 1.1 HKLM\Software\Microsoft\NET Framework Setup\NDP\v1.1.4322\Install 2.0 HKLM\Software\Microsoft\NET Framework Setup\NDP\v2.0.50727\Install 3.0 HKLM\Software\Microsoft\NET Framework Setup\NDP\v3.0\Setup\InstallSuccess 3.5 HKLM\Software\Microsoft\NET Framework Setup\NDP\v3.5\Install … Read more
ASP.NET MVC1 -> MVC3 string path = HttpContext.Current.Server.MapPath(“~/App_Data/somedata.xml”); ASP.NET MVC4 string path = Server.MapPath(“~/App_Data/somedata.xml”); MSDN Reference: HttpServerUtility.MapPath Method