Code snippet: Auto complete for ArgumentNullException in Visual Studio - visual-studio

Question

I'm often writing a c# code that goes like this:
void func(object myObject)
{
if (myObject == null)
{
throw new ArgumentNullException("myObject");
}
...
How do I write an auto-complete in Visual Studio 2012 for that type of code, so that I don't have to keep typing this all the time?

Answer 1

Since there hasn't been an interest, I'm going to close on this question by posting my own solution. Putting following file into C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC#\Snippets\1033\Visual C#\ifn.snippet will do the trick:
<?xml version="1.0" encoding="utf-8" ?>
<CodeSnippets xmlns="http://schemas.microsoft.com/VisualStudio/2005/CodeSnippet">
<CodeSnippet Format="1.0.0">
<Header>
<Title>ifn</Title>
<Shortcut>ifn</Shortcut>
<Description>Code snippet for if (arg==null)</Description>
<Author>sam green</Author>
<SnippetTypes>
<SnippetType>Expansion</SnippetType>
<SnippetType>SurroundsWith</SnippetType>
</SnippetTypes>
</Header>
<Snippet>
<Declarations>
<Literal>
<ID>argument</ID>
<Default>arg</Default>
<ToolTip>Argument</ToolTip>
</Literal>
</Declarations>
<Code Language="csharp"><![CDATA[if ($argument$ == null)
{
throw new ArgumentException("$argument$");
}$end$]]>
</Code>
</Snippet>
</CodeSnippet>
</CodeSnippets>

Answer 2

I defined a ReSharper shortcut for this using the keywords "argnull" that auto-generates and guesses the parameter I want. It's about the same effect as your solution, I think, though you don't need to muck with XML or where to place files.
Here's an example of a ReSharper VB.NET approach:
if $VAR$ is nothing then
throw new ArgumentNullException("$VAR$")
end if

Answer 3

To improve on #galet's answer, here's mine:
Uses a succinct single-line if() throw; statement.
Uses the more precise ArgumentNullException instead of ArgumentException.
Uses nameof() to avoid magic-strings (and so will work perfectly with Refactor-Renames).
Uses the (safer) is null operator:
<?xml version="1.0" encoding="utf-8" ?>
<CodeSnippets xmlns="http://schemas.microsoft.com/VisualStudio/2005/CodeSnippet">
<CodeSnippet Format="1.0.0">
<Header>
<Title>ifn</Title>
<Shortcut>ifn</Shortcut>
<Description>Code snippet for if (arg==null)</Description>
<Author>https://stackoverflow.com/questions/18905475</Author>
<SnippetTypes>
<SnippetType>Expansion</SnippetType>
<SnippetType>SurroundsWith</SnippetType>
</SnippetTypes>
</Header>
<Snippet>
<Declarations>
<Literal>
<ID>argument</ID>
<Default>arg</Default>
<ToolTip>Argument</ToolTip>
</Literal>
</Declarations>
<Code Language="csharp"><![CDATA[if( $argument$ is null ) throw new ArgumentNullException( nameof($argument$) );$end$]]>
</Code>
</Snippet>
</CodeSnippet>
</CodeSnippets>