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Net::SMTPAuthenticationError when sending email from Rails app (on staging environment)
...s were sent from development, but not from production (where I was getting Net::SMTPAuthenticationError).
This drove me to conclusion that the problem was not with my app's configuration, but with Google.
Reason: Google was blocking access from unknown location (app in production)
Solution: Go to ...
Why Func instead of Predicate?
...een introduced at the same time that List<T> and Array<T>, in .net 2.0, the different Func and Action variants come from .net 3.5.
So those Func predicates are used mainly for consistency in the LINQ operators. As of .net 3.5, about using Func<T> and Action<T> the guideline ...
ASP.NET MVC: No parameterless constructor defined for this object
I was following Steven Sanderson's ' Pro ASP.NET MVC Framework ' book. On page 132, in accordance with the author's recommendation, I downloaded the ASP.NET MVC Futures assembly, and added it to my MVC project. [Note: This could be a red herring.]
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How to call asynchronous method from synchronous method in C#?
...Await(false). This means it can't update any UI elements or access the ASP.NET request context.
Solution B
If MyAsyncMethod does need to synchronize back to its context, then you may be able to use AsyncContext.RunTask to provide a nested context:
var result = AsyncContext.RunTask(MyAsyncMethod).Res...
Mixing C# & VB In The Same Project
...are all compiled to CIL.
It compiled fine and didn't complain because a VB.NET project will only actually compile the .vb files and a C# project will only actually compile the .cs files. It was ignoring the other ones, therefore you did not receive errors.
Edit: If you add a .vb file to a C# project...
Get URL of ASP.Net Page in code-behind [duplicate]
I have an ASP.Net page that will be hosted on a couple different servers, and I want to get the URL of the page (or even better: the site where the page is hosted) as a string for use in the code-behind. Any ideas?
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How to Compare Flags in C#?
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In .NET 4 there is a new method Enum.HasFlag. This allows you to write:
if ( testItem.HasFlag( FlagTest.Flag1 ) )
{
// Do Stuff
}
which is much more readable, IMO.
The .NET source indicates that this performs the same log...
Resolving javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path
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javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
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Broadcast receiver for checking internet connection in android app
I am developing an android broadcast receiver for checking internet connection.
21 Answers
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Can I “multiply” a string (in C#)?
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In .NET 4 you can do this:
String.Concat(Enumerable.Repeat("Hello", 4))
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