Convert string to Proper case in Dot Net

Here is the code to convert string to Proper case for ex. mcdonald --> McDonald, neil o'brien --> Neil O'Brien

public string ToProperCase(string Input)
    {
        if (string.IsNullOrWhiteSpace(Input))
            return string.Empty;
        else
        {
            System.Globalization.CultureInfo cultureInfo = System.Threading.Thread.CurrentThread.CurrentCulture;
            System.Globalization.TextInfo Text_Info = cultureInfo.TextInfo;
            return Text_Info.ToTitleCase(Input.ToLower());
        }
    }

Response.Write(ToProperCase("vishal.neeraj" + "<br/>")); //Vishal.Neeraj
Response.Write(ToProperCase("dotnet funda" + "<br/>")); //Dotnet Funda