When gathering user input, especially in a free form text box, users will enter something like their first and last name but will not capitalize the first letters for the name. Then later, you may want to display the name and you find that it doesn't look very nice and is harder to read because of lack of capitalization.

The below code will take a value such as "john doe" and return it as the string "John Doe". You can even use the below code to format something like a blog title where you want each word to be capitalized.

/// <summary>
/// Sets the first letter of each word in the value specified to 
/// capitalized.
/// </summary>
/// <param name="sValue">The word(s) to capitalize the first
/// letter of each.</param>
public static string CapitalizeFirstLetters(string sValue)
{
    char[] array = sValue.ToCharArray();
    // handle the first letter in the string
    if (array.Length >= 1)
    {
        if (char.IsLower(array[0]))
        {
            array[0] = char.ToUpper(array[0]);
        }
    }

    // scan through the letters, checking for spaces
    for (int i = 1; i < array.Length; i++)
    {
        if (array[i - 1] == ' ')
        {
            if (char.IsLower(array[i]))
            {
                array[i] = char.ToUpper(array[i]);
            }
        }
    }

    return new string(array);
}