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DropDownList's SelectedIndexChanged event not firing
I have a DropDownList object in my web page. When I click on it and select a different value, nothing happens, even though I have a function wired up to the SelectedIndexChanged event.
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What are the uses of “using” in C#?
... kokos answered the wonderful Hidden Features of C# question by mentioning the using keyword. Can you elaborate on that? What are the uses of using ?
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variable === undefined vs. typeof variable === “undefined”
The jQuery Core Style Guidelines suggest two different ways to check whether a variable is defined.
8 Answers
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How do I stop Entity Framework from trying to save/insert child objects?
...med it would only try to save the specified entity. However, it is also trying to save that entity's child entities. This is causing all sorts of integrity problems. How do I force EF to only save the entity I want to save and therefore ignore all child objects?
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Deep null checking, is there a better way?
Note: This question was asked before the introduction of the .? operator in C# 6 / Visual Studio 2015 .
16 Answers
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how to edit .csproj file
When I am compiling my .csproj file using .NET framework 4.0 MSBUILD.EXE file I am getting an error "lable01" not found in the current context of "website01.csproj"
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How to enter in a Docker container already running with a new TTY
I have a container that is running the Apache service in the foreground. I would like to be able to access the container from another shell in order to "poke around" inside it and examine the files. At the moment, if I attach to the container, I am left looking at the Apache daemon and cannot run an...
How do I add a library project to Android Studio?
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Update for Android Studio 1.0
Since Android Studio 1.0 was released (and a lot of versions between v1.0 and one of the firsts from the time of my previous answer) some things has changed.
My description is focused on adding external library project by han...
Nested using statements in C#
I am working on a project. I have to compare the contents of two files and see if they match each other precisely.
17 Answe...
How can I check if an element exists in the visible DOM?
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It seems some people are landing here, and simply want to know if an element exists (a little bit different to the original question).
That's as simple as using any of the browser's selecting method, and checking it for a truthy value (generally).
For ...