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Disable Required validation attribute under certain circumstances

I was wondering if it is possible to disable the Required validation attribute in certain controller actions. I am wondering this because on one of my edit forms I do not require the user to enter values for fields that they have already specified previously. However I then implement logic that when...
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MySQL ERROR 1045 (28000): Access denied for user 'bill'@'localhost' (using password: YES)

First let me mention that I've gone through many suggested questions and found no relevent answer. Here is what I'm doing. ...
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How can I set a custom date time format in Oracle SQL Developer?

By default, Oracle SQL developer displays date values as 15-NOV-11 . I would like to see the time part (hour/minute/second) by default. ...
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Visual Studio: How do I show all classes inherited from a base class?

In Visual Studio, How do I show all classes inherited from a base class? 19 Answers ...
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Deserializing JSON data to C# using JSON.NET

I'm relatively new to working with C# and JSON data and am seeking guidance. I'm using C# 3.0, with .NET3.5SP1, and JSON.NET 3.5r6. ...
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How to launch Safari and open URL from iOS app

On the settings page, I want to include three links to 15 Answers 15 ...
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Javascript - sort array based on another array

Is it possible to sort and rearrange an array that looks like this: 21 Answers 21 ...
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Implementing INotifyPropertyChanged - does a better way exist?

Microsoft should have implemented something snappy for INotifyPropertyChanged , like in the automatic properties, just specify {get; set; notify;} I think it makes a lot of sense to do it. Or are there any complications to do it? ...
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What's the difference between window.location= and window.location.replace()?

Is there a difference between these two lines? 2 Answers 2 ...
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Addressing localhost from a VirtualBox virtual machine [closed]

I have a local test/development server (HTTP, of course), listening to port 8000. 22 Answers ...