Look at each character in a string

Question

I was wondering if anyone knew how to look through a string at each character and then add each character to a new string? Just a really really basic example, I can add the ToUpper and ToLower validation and such.

Answer 1

string foo = "hello world", bar = string.Empty;  foreach(char c in foo){     bar += c; } 

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Using StringBuilder:

string foo = "hello world"; StringBuilder bar = new StringBuilder();  foreach (char c in foo) {     bar.Append(c); } 

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Below is the signature of the String class:

[SerializableAttribute] [ComVisibleAttribute(true)] public sealed class String : IComparable,      ICloneable, IConvertible, IComparable<string>, IEnumerable<char>,      IEnumerable, IEquatable<string> 

http://msdn.microsoft.com/en-us/library/system.string(v=vs.100).aspx

Answer 2

var output = ""; // or use StringBuilder foreach(char c in text) {      output += c; // if or do with c what you need } 

...is that what you needed?
string is IEnumerable<char>