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There is already an open DataReader associated with this Command which must be closed first

I have this query and I get the error in this function: 18 Answers 18 ...
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Can an ASP.NET MVC controller return an Image?

Can I create a Controller that simply returns an image asset? 19 Answers 19 ...
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How do I invert BooleanToVisibilityConverter?

I'm using a BooleanToVisibilityConverter in WPF to bind the Visibility property of a control to a Boolean . This works fine, but I'd like one of the controls to hide if the boolean is true , and show if it's false . ...
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Which are more performant, CTE or temporary tables?

Which are more performant, CTE or Temporary Tables ? 12 Answers 12 ...
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Regex to replace multiple spaces with a single space

Given a string like: 23 Answers 23 ...
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i18n Pluralization

I want to be able to translate pluralized strings in i18n in rails. A string can be : 7 Answers ...
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Merging dictionaries in C#

What's the best way to merge 2 or more dictionaries ( Dictionary<T1,T2> ) in C#? (3.0 features like LINQ are fine). 2...
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How to use System.Net.HttpClient to post a complex type?

I have a custom complex type that I want to work with using Web API. 9 Answers 9 ...
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What is C# analog of C++ std::pair?

I'm interested: What is C#'s analog of std::pair in C++? I found System.Web.UI.Pair class, but I'd prefer something template-based. ...
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What is dynamic programming? [closed]

What is dynamic programming ? 10 Answers 10 ...