Oct 03 2006

ProperCase function in C#

Posted by admin under .NET

I've seen a lot of variants of this function, while being really simple it allows for a lot of different solutions.
For example, solutions with regular expressions are quite popular floating around the web but the solution I use is so simple: 



public static string ProperCase(string stringInput) 
        { 
            System.Text.StringBuilder sb = new System.Text.StringBuilder(); 
            bool fEmptyBefore = true; 
            foreach (char ch in stringInput) 
            { 
                char chThis = ch; 
                if (Char.IsWhiteSpace(chThis)) 
                    fEmptyBefore = true; 
                else 
                { 
                    if (Char.IsLetter(chThis) && fEmptyBefore) 
                        chThis = Char.ToUpper(chThis); 
                    else
                        chThis = Char.ToLower(chThis); 
                    fEmptyBefore = false; 
                } 
                sb.Append(chThis); 
            } 
            return sb.ToString(); 
        }

it will turn all these cases:

string s1 = ProperCase("STefan HOLMBERG"); s1 = ProperCase("stefan holmberg"); s1 = ProperCase("steFan holmberg");

into Stefan Holmberg

While this solution

 



string sName = Microsoft.VisualBasic.Strings.StrConv("stefan holmberg sweden . You bet. this is a cool function",
 Microsoft.VisualBasic.Constants.vbProperCase,0);

-e using the VisualBasic runtime functions from within C# is possible - and also quite nice - you need to remember to add a reference to Microsoft.VisualBasic.dll in order to use it