大约有 45,000 项符合查询结果(耗时:0.0656秒) [XML]

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How to play a sound in C#, .NET

I have a Windows application written in C#/.NET. 7 Answers 7 ...
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Twitter bootstrap scrollable table

I would like to have a table on my website. The problem is that this table will have about 400 lines. How can I limit the table's height, and apply scrollbar to it? This is my code: ...
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Can anyone explain IEnumerable and IEnumerator to me? [closed]

... for example, when to use it over foreach? You don't use IEnumerable "over" foreach. Implementing IEnumerable makes using foreach possible. When you write code like: foreach (Foo bar in baz) { ... } it's functionally equivalent to writing: ...
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How do I ignore all files in a folder with a Git repository in Sourcetree?

I have a Bitbucket Git repository managed with Sourcetree. 10 Answers 10 ...
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How to execute a Ruby script in Terminal?

I've set everything up that I need on my Mac (Ruby, Rails, Homebrew, Git, etc), and I've even written a small program. Now, how do I execute it in Terminal? I wrote the program in Redcar and saved it as a .rb, but I don't know how to execute it through Terminal. I want to run the program and see if ...
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How much size “Null” value takes in SQL Server

I have a large table with say 10 columns. 4 of them remains null most of the times. I have a query that does null value takes any size or no size in bytes. I read few articles some of them are saying : ...
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Nullable type as a generic parameter possible?

... Change the return type to Nullable<T>, and call the method with the non nullable parameter static void Main(string[] args) { int? i = GetValueOrNull<int>(null, string.Empty); } public static Nullable<T> GetValueOrNull<T>(DbDataRecord reader, string columnName) ...
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The Role Manager feature has not been enabled

... You can do this by reading from the boolean property at: System.Web.Security.Roles.Enabled This is a direct read from the enabled attribute of the roleManager element in the web.config: <configuration> <system.web> <roleManager enabled="true" /> </system.web> &lt...
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How to handle click event in Button Column in Datagridview?

...'ve added a button to your DataGridView and you want to run some code when it's clicked. Easy peasy - just follow these steps: Don'ts: First, here's what NOT to do: I would avoid the suggestions in some of the other answers here and even provided by the documentation at MSDN to hardcode the column i...
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Why use apparently meaningless do-while and if-else statements in macros?

... The do ... while and if ... else are there to make it so that a semicolon after your macro always means the same thing. Let's say you had something like your second macro. #define BAR(X) f(x); g(x) Now if you were to use BAR(X); in an if ... else statement, where the bodi...