Camelize in C#

camelize.cs

/*
 * Ex.
 *  Convert "foo_bar" to "FooBar".
 */
public static string camelize(string str) {
    string result = "";

    string[] strArray = str.Split('_');
    foreach(string word in strArray) {
        result += word.Substring(0, 1).ToUpper() + word.Substring(1);
    }
    return result;
}