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How to Toggle String Case in .Net

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11 Feb 2011CPOL 5.7K   3  
Interesting finding in regards to the Case Toggle Algorithm by Robert (see the following code snippet): protected string ToggleCaseByRobert(string s){ var sb = new StringBuilder(s.Length); foreach (char c in s) sb.Append(char.IsUpper(c) ? char.ToLower(c) :...
Interesting finding in regards to the Case Toggle Algorithm by Robert (see the following code snippet):
C#
protected string ToggleCaseByRobert(string s)
{
    var sb = new StringBuilder(s.Length);
    foreach (char c in s)
        sb.Append(char.IsUpper(c) ? char.ToLower(c) : char.ToUpper(c));
    return sb.ToString();
}


The functionality will stay the same if the line:
var sb = new StringBuilder(s.Length);

is replaced with simplified version:
var sb = new StringBuilder();

but the original version demonstrates about 5...10% performance boost. Kudos to Robert Rohde for this useful tip!

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


Written By
Engineer
United States United States
Dr. Alexander Bell (aka DrABell), a seasoned full-stack Software (Win/Web/Mobile) and Data Engineer holds PhD in Electrical and Computer Engineering, authored 37 inventions and published 100+ technical articles and developed multiple award-winning apps (App Innovation Contests AIC 2012/2013 submissions) Alexander is currently focused on Microsoft Azure Cloud and .NET 6/8 development projects.

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