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why C# use _<variableName> coding convention?

Posted By :Ravi Ranjan Kumar     Posted Date :June 16, 2011    Points :40   Category :C# 
In C# we usually prefix with _ private fields but never local variables. The rationale behind this is that when I need a private variable I type _ and the Intellisense filters the list and it is easier to find. This way we are also able to distinguish between private from local variables and we don't longer need to type this.variablename for class fields but simply _variablename.

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