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What is the App_Data folder used for in Visual Studio?
When creating a new ASP.NET application in Visual Studio, a couple of files and folders are created automatically. One of those folders is called App_Data .
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Object reference not set to an instance of an object.Why doesn't .NET show which object is `null`?
Regarding this .NET unhandled exception message:
5 Answers
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What should I do if the current ASP.NET session is null?
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If you only have code in pages, you won't run into this. Most of my ASP .NET code uses Session without checking for null repeatedly. It is, however, something to think about if you are developing an IHttpModule or otherwise is down in the grittier details of ASP .NET.
Edit
In answer to the comment...
How can I remove the search bar and footer added by the jQuery DataTables plugin?
...re is filtering going on for each column, like in this example :datatables.net/release-datatables/extras/FixedColumns/… . Be aware!
– Janis Peisenieks
Apr 17 '13 at 10:45
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.NET - Get protocol, host, and port
Is there a simple way in .NET to quickly get the current protocol, host, and port? For example, if I'm on the following URL:
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Getting the HTTP Referrer in ASP.NET
...ck, easy and reliable way of getting the browser's HTTP Referrer in ASP.Net ( C# ). I know the HTTP Referrer itself is unreliable, but I do want a reliable way of getting the referrer if it is present.
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Java Name Hiding: The Hard Way
...ince the target object isn't involved in invocation of static methods).
((net.foo.X) null).doSomething();
This has the benefits of
being side-effect free (a problem with instantiating net.foo.X),
not requiring renaming of anything (so you can give the method in B the name you want it to have; t...
Catch All Bugs with BugTrap! - 开源 & Github - 清泛网 - 专注IT技能提升
...per's computer by e-mail, over HTTP, or through a fast low-level TCP-based network protocol. The BugTrap server automatically manages the error reports repository, and notifies developers about any new errors.
BugTrap stores error descriptions in log and mini-dump files. Mini-dump files may be op...
Catch All Bugs with BugTrap! - 开源 & Github - 清泛网 - 专注IT技能提升
...per's computer by e-mail, over HTTP, or through a fast low-level TCP-based network protocol. The BugTrap server automatically manages the error reports repository, and notifies developers about any new errors.
BugTrap stores error descriptions in log and mini-dump files. Mini-dump files may be op...
Catch All Bugs with BugTrap! - 开源 & Github - 清泛网 - 专注IT技能提升
...per's computer by e-mail, over HTTP, or through a fast low-level TCP-based network protocol. The BugTrap server automatically manages the error reports repository, and notifies developers about any new errors.
BugTrap stores error descriptions in log and mini-dump files. Mini-dump files may be op...